AN AMERICAN NATIONAL STANDARD
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ASME B16.47a-1998
ADDENDA
to
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ASME 816.47-1996
LARGE DIAMETER STEEL FLANGES
NPS 26 Through NPS 60
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
Three Park Avenue
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
New York, NY 10016
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Date of Issuance: October 26. 1998
ASME is the registeredtrademark of The American Society of Mechanical Engineers.
This code or standard was developed under procedures
accredited as meeting the criteria for
American National Standards. The Standards committee that approved the code or standard
was balanced to assure that individuals from competent and concerned interests have had an
opportunity to participate. The proposed code or standard
was made available for public review
and comment that providesan opportunity for additional public input fromindustry, academia,
regulatory agencies, and the public-at-large.
ASME does not "approve," "rate," or "endorse" any item, construction, proprietary device,
or activlty.
ASME does not take any position with respect to the validity of any patent rights asserted in
connection with any items mentioned
in thisdocument, and does not undertake to insure anyone
utilizing a standard against
liability for infringement
of any applicable
Letters Patent, nor assumes
any such liability. Users of a code or standard are expressly advised that determination of the
validity of any such patent rights, and the risk of infringement of such rights, is entirely their
own responsibility.
Participation by federal agency representativels) or person(s) affiliated with industry is not to
be interpreted as government or industry endorsement of this code or standard.
ASME acceptsresponsibilityfor only those
interpretations issued in accordance with governing
ASME procedures and policies which preclude the issuance of interpretations by individual
volunteers.
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No part of this document may be reproduced in any form,
in an electronic retrieval system or otherwise,
without the prior written permission of the publisher.
The American Society of Mechanical Engineers
Three Park Avenue, New York, NY 10016-5990
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Copyright O 1998 by
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
All Rights Reserved
Printed in U.S.A.
COPYRIGHT American Society of Mechanical Engineers
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ASME B16.47a-1998
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Following approval by the ASME B16 Committee and ASME, and after public review, ASME B16.47a1998 was approved by the American National Standards Institute on February 20, 1998.
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Addenda to the 1996 Edition of ASME B16.47
are issued in the form of replacement pages. Revisions,
additions, and deletions are incorporated directly into the affected pages. It is advisable, however, that this
page, the Addenda title and copyright pages, and all replaced pages be retained for reference.
SUMMARY OF CHANGES
This is the first Addenda to be published to ASME B16.47-1996.
Replace or insert the pages listed. Changes given below are identified on the pages by a margin note, (a),
placed next to the affected area. The pages not listed are the reverse sides of the listed pages and contain
no changes.
ommittee
Change
Page
Location
...
111
Foreword
paragraph,
last In the
2
2.4
sentence
8, 9
Table 1A
(1) A 350 Gr. LF6 Cl. 1 added to material
group l . 1
(2) A 350 Gr. LF6 Cl. 2 added to material
group 1.2
(3) New material group l . 15 added
(4) A 351 Gr. CESMN, A 351 Gr. CD4MCu,
A 351 Gr. CD~MWCUN,
A 182 Gr. F55,
and A 240 Gr. S32760 added to material
group 2.8
11
Table 2- l. I
(1) A 350 Gr. LF6 Cl. 1 added
(2) Note (4) added
(3) Entries for last four class temperatures
corrected by Errata
12
Table 2- 1.2
( I ) A 350 Gr. LF6 Cl. 2 added
(2) Note (3) added
(3) Working pressure for Class 75 at 500°F
corrected by Errata to read 85
ASME
updated
address
vii
COPYRIGHT American Society of Mechanical Engineers
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First
corrected by Errata
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Location
Change
Table 2- 1.15
Added
27
Table 2-2.7
Working pressure for Class 400 at 850°F
corrected by Errata to read 570
28
Table 2-2.8
A 35 I Gr. CE8MN, A 35 1 Gr. CD4MCu, A
351 Gr. CD3MWCuN. A 182 Gr. F55, and
A 240 Gr. S32760 added
42
Table 13
Depth of C in sketch corrected by Errata
43
Table 14
Depth of C in sketch corrected by Errata
44
Table 15
Depth of C in sketch corrected by Errata
59
Annex D
Addresses of ASME and ASTM updated
61
Interpretations
ASME address updated
Page
20. I
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SPECIAL NOTE:
TheInterpretations to ASMEB16.47 are includedinthisAddenda
as a separatesection for theuser’s
convenience. This section, however, is not part of the Addenda or the edition.
COPYRIGHT American Society of Mechanical Engineers
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(This Foreword is not part of ASME B16.47-1996.)
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In November, 1980,a task force was appointed within Subcommittee C of the American
in size
National Standards(ANSI) B16 Committee to developa standardforpipeflanges
N P S 26 through NPS 48. Everyattempt was made to standardize those dimensions that
existed withintheindustry for thematerials covered by ANSI B16.5.
Prompted by suggestions received from committee members, the task force was authorized
to increase the size range to NPS 60. The first draft was developed in December 1982 to
includeClass 75 through Class 1500 forthe size range N P S 26 through N P S 60. Flange
dimensions werebasedon
the Manufacturers Standardization SocietyStandard Practice
(MSS SP) 44 flanges except for Class 75 flanges which are ANSUAPI 605 flanges.
At the request of the American Petroleum Institute (API), flange dimensions in accordance
with the API Standard 605 were included in the subsequent drafts. Class 1500 flanges were
deleted due to lack of interest in using large size flanges in that pressure-temperature rating.
TheAPL605 flanges for Classes 150 and 300 and for sizes N P S 36 and smaller for
classes higherthan Class 300 are not compatible with the MSSSP-44flanges. Thus, the
MSS SP-44 flanges are designated as Series A flanges and the APL605 flanges are designated
as Series B flangesinthis
Standard. Materials coveredinthisStandard
are as in ANSI
B16.5 except nickel base alloys are excluded. Pressure-temperature ratings are in accordance
withANSI B165
In 1982, AmericanNational Standards Committee B16 was reorganized as the American
Society of Mechanical Engineers (ASME) B16 Committee operatingunder
procedures
accredited byANSI. Following approval by the Standards Committee and ASME, approval
as an AmericanNational Standard wasgiven by ANSI on June 12, 1990.
This 1996 Edition allows flanges marked with more than onematerial grade or specification,
revises flange facing finish requirements, has revised pressure-temperature ratings for several
material groups, adds permissible flange facing imperfections, adds blindflanges for Series
B flanges, and includes several other revisions. Following approval by the Standards
by ANSI
Committee andASME, approval as an American National Standardwasgiven
on October 3, 1996 withthenew
designation ASME B16.47-1996.
All requests for interpretations or suggestions for revisions should be sent to the Administrative Secretary B16, TheAmerican Society of MechanicalEngineers,Three Park Avenue,
New York, NY 10016-5990.
iii
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ASME B16 COMMllTEE
Standardization of Valves, Flanges, Fittings, Gaskets, andValve
Actuators
(a)
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(The following is a roster of the Committee at the time of approval of this Standard.)
OFFICERS
W. N. McLean, Chair
R. A. Schmidt, Vice Chair
P. A. Reddington, Secretary
COMMIITEE PERSONNEL
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W. L. Ballis, Consultant, London, Ohio
R. W. Barnes, Anric Enterprises, Elobicoke, Ontario, Canada
R. R. Brodin, Fisher Controls International, Inc., Marshalltown, Iowa
M. A. Clark, Nibco Inc., Elkhart, Indiana
C. E. Floren, Mueller Co., Decatur, Illinois
D. R. Frikken, Monsanto Co., St. Louis, Missouri
R. Henrich, Minnegasco Inc., Golden Valley, Minnesota
J. C. Inch, Mueller Refrigeration Products Co., Hartsville, Tennessee
G. A. Jolly, Vogt Valve Co., Louisville, Kentucky
W. G. Knecht, Consultant, Williamsport, Pennsylvania
R. A. Koester, The William Powell Co., Cincinnati, Ohio
W. N. McLean, Newco Valve Co., Palos Park, Illinois
M. L. Nayyar, Bechtel Corp., Gaithersburg, Maryland
R. A. Schmidt, Ladish Co., Russellville, Arkansas
H. R. Sonderegger, Grinnel Corp., Cranston, Rhode Island
W. M. Stephan, Flexitallic Inc., Pennsauken, New Jersey
T. F. Stroud, Ductile Iron Research Association, Birmingham, Alabama
M. D. Wasicek, ABS Americas, Houston, Texas
R. E. White, Richard E. White & Associates, South Bend, Indiana
D.A. Wtlliams, Southern Company Services, Birmingham, Alabama
L. A. willis, Dow Chemical Co., Freeport, Texas
W. R. Worley. Union Carbide Corp., South Charleston. West Virginia
PERSONNEL OF SUBCOMMllTEE C
FLANGED FIlTINGS
- STEEL FLANGES AND
D. R. Frikken, Chair, Monsanto Co., St. Louis, Missouri
P. A. Reddington, Secretary, ASME International, New York, New York
V. C. Bhasin, Sigmatech, Pittsburgh, Pennsylvania
G. D. Conlee, Consultant, St. Louis, Missouri
W. C. Farrell, Jr., Consultant, Birmingham, Alabama
M. L. Henderson, Coffer Corp., Houston, Texas
R. E. Johnson, Flowline Div., New Castle, Pennsylvania
R. Koester, The William Powell Co., Cincinnati, Ohio
R. Madewell, FIO-Bendlnc., Sand Springs, Oklahoma
W. N. McLean, Newco Valve Co., Palos Park, Illinois
V
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M. L. Nayyar, Bechtel Corp., Gaithersburg, Maryland
R. A. Schmidt, Ladish Co., Russellville, Arkansas
D. L. Shira, Taylor Forge, Cordova, Tennessee
J. C. Thompson, Milwaukee Valve, Rising Sun, Maryland
L. A. Willis, Dow Chemical Co., Freeport, Texas
vi
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ASME B1 6.47a-1998
LARGE DIAMETER STEEL FLANGES
1 SCOPE
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foroperation at a pressure exceeding the pressuretemperatureratingsinthisStandard.
1.1 General
1.4 Applicable Ratings
ThisStandardcovers
pressure-temperatureratings,
materials, dimensions, tolerances, marking,andtesting
for pipe flanges in sizes N P S 26 through N P S 60 and
in ratings Classes 75, 150, 300, 400, 600, and 900.
Flanges may be cast, forged, or plate (for blind flanges
only) materials, as listed in Table 1A.
Requirements and recommendations
regarding bolting
and gaskets are also included.
The pressure-temperature ratings in this Standard are
applicable upon its publication
to all flanges within its
scope which otherwise meet its requirements. For unused
flangesmaintained in inventory,the manufacturer of
theflangemaycertify
conformance to this Edition,
providedhecan
demonstrate that all requirements of
thisEditionhavebeenmet.
Where such components
were installed in accordance with the pressure-temperature ratings of an earlier edition of this Standard, those
ratingsare applicable, except as maybe governed by
the applicable code or regulation (see para. 1.3.2).
1.2 Flange Series
This Standard provides two series offlangedimensions. Series A specifies flange dimensions for general
use flanges. Series B specifies fiange dimensions for
compact flanges which, ingeneral,have
smaller bolt
circle diameters than Series A flanges. These two series
of flanges are not interchangeable. The usershould
recognize that some flangedvalves,equipmentbolted
between flanges, andflangedequipment
may onlybe
compatible with bolt circle diameter of oneseries of
flanges.
1.5 User Accountability
This Standard cites dutiesand responsibilities that
are to be assumed by the user in the areas of application,
installation, hydrostatic testing, operation, and material
selection.
1.6 Quality Systems
Nonmandatoryrequirements relating to the product
manufacturer’sQualitySystemProgram
are described
in Annex D.
1.3 References
1.3.1 Referenced Standards. Standards and specifications adopted by reference in thisStandardare
shown in Annex E, whichis part of thisStandard. It
is not considered practical to identify the specific edition
of eachstandard andspecification in theindividual
references. Instead, the specificeditionreferenceis
identified in Annex E. A flange manufactured in accordance with earlier editions of thereferenced standards,
andinall other respects conforming tothis Standard,
will beconsidered to be in conformancewiththis
Standard.
2 PRESSURE-TEMPERATURE RATINGS
2.1 Rating Basis
Ratings are maximum allowable working gage pressures, atthe temperaturesshown in Table 2 for the
applicable material and rating. For intermediate temperatures, linear interpolation is permitted. See Annex A for
methods of establishing pressure-temperatureratings.
2.2 Ratings of Flanged Joints
1.3.2 Codes and Regulations. A flangeused
under the jurisdiction of the ASME Boiler and Pressure
Vessel Code (ASME BPV Code), the ASME Code for
Pressure Piping, or a governmental regulation is subject
to any limitation of that code or regulation. This includes
anymaximum temperature limitation, rulegoverning
the use of a material at low temperature, or provisions
A flanged joint iscomposed of three separate and
independent,althoughinterrelated,components:
the
flanges, the gasket, and the bolting, whichare assembled
by yet another influence, the assembler. Proper controls
mustbe exercised in theselectionand application for
all these elements in order to attain a joint which has
1
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ASME B16.47a-1998
LARGE DIAMETER STEEL FLANGES
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2.4.2 Low Temperature Service.Some
ofthe
materialslisted in theratingtablesundergosufficient
decrease intoughness at low temperaturesthat they
cannot safelysustain shock loadings,suddenchanges
of stressortemperature,orhighstressconcentrations.
acceptableleaktightness.Specialtechniquessuchas
controlled bolt tightening may be necessary to achieve
atightjointinservice.
Ratings in this Standard apply to flanged joints which
conform tothelimitationsonboltinginpara.
5.3 and
5.4, andwhicharemadeup
in
ongasketsinpara.
accordance with good practice for alignment and assembly. See alsopara.2.4.Useoftheratingsforflanged
joints not conforming totheselimitations
isthesole
responsibility of theuser.Requirementsforalignment
andassembly of joints are notgiveninthisStandard.
Ifthetwoflangesinaflanged
joint do nothave
the same pressure-temperatureratings,theratingof
the joint at anytemperature is the lower ofthetwo
flangeratings at thattemperature.
2.5 System Hydrostatic Test
Flanged joints may be subjected to system hydrostatic
tests at apressurenot
to exceed 1.5 timesthe 100°F
ratingroundedofftothe
next higher 25 psi.
Testing at anyhigherpressureis
the responsibility
of the user, subject to the requirements of the applicable
code orregulation.
2.6 Welding NeckFlanges
Ratings for carbon steel cylindricallyboredwelding
neckflangescovered by this Standard are basedupon
theirhubs at thewelding end havingathickness
at
least equal to thatcalculatedfor pipe having40.0ksi
specified
minimum
yield
strength.The
ratings
also
apply to such flanges used with components of unequal
strength and unequal wall thickness when the attachment
welds ismadein accordance withtheapplicable code
orregulation. See Figs. 5, 6, and 7.
2.3 Rating Temperature
The temperature shown for a corresponding pressure
ratingisthetemperature
ofthepressurecontaining
shell oftheflange.Ingeneral,thistemperatureisthe
same as thatofthecontainedfluid.
Use of a pressure
rating correspondingtoatemperatureotherthanthat
of the contained fluid is the responsibility of the user,
of theapplicable code or
subject totherequirements
regulation. For any temperature below -20°F the rating
shallbenagreaterthantherating
shown for-20°F.
(a)
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2.7 MultipleMaterial
Materials for flanges may meet the requirements for
more than one specification or grade of a specification
listed in Table 1A. In that event, the pressure-temperatureratingsforany
of thesespecificationsorgrades
may be used provided that the marking is in accordance
withpara.4.1.2(d).
2.4 Temperature Considerations
Application of the ratings in this Standard to flanged
joints at bothhighandlowtemperaturesshalltake
into considerationtherisk
of leakage due toforces
andmomentsdeveloped
in theconnectedpipingor
equipment. The followingprovisions are intendedto
minimizethese risks.
3 SIZE
3.1 Nominal Size
The size of aflange covered bythisStandardisits
nominal pipe size (NPS). The diameter of a bolt is its
nominal size. Use ofnominalindicatesthatthestated
size or dimension is only for designation, not measurement. Theactualdimension
may ormaynotbethe
nominalsizeandis
subject toestablishedtolerances.
2.4.1 High Temperature Service. At temperatures in the creep range, gradual relaxation of flanges,
bolts, and gaskets may progressively reduce bolt loads.
It maybenecessary to arrangeforperiodictightening
of bolts to prevent leakage. Joints subject to substantial
thermalgradientsmayrequirethe
same attention.
When used above 400"F, Classes 75 and 150 flanged
joints may develop leakageunlesscareistakento
avoidimposingsevereexternalloadsand/orsevere
thermalgradients.Forotherclasses,similarconsiderationshould be givenabove 750°F.
4 MARKING
4.1 General
Except as modified herein, flangesshall be marked
as required in MSS SP-25.
2
COPYRIGHT American Society of Mechanical Engineers
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Grades
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METER
LARGE
STEEL FLANGES
ASME B16.47a-1998
7.6.2 Center-to-center of adjacent bolt holes, 0.03 in.
7.6.3Eccentricitybetweenbolt
circle diameter and
machinedfacing diameters, 0.06 in.
8 TEST
8.1 Flange Testing
Flanges are not required to be hydrostatically tested.
7
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LARGEASME B16.47a-1998
TABLE I A LIST OF MATERIAL
SPECIFICATIONS
(a)
~~
~
~~
Material
Group
Nominal
Designation
c-si
1.I
C-Mn-Si
1
1.2
I
PressureTemperature
Rating Table
2-1‘1
I
C-Mn-Si-V
C-Mn-Si
Plates
Castings
A 515 Gr.70
A 516 Gr. 70
A 537 CI. 1
A 216 Gr. WCB
LF2 Gr.
I
I
2-1.2 A 216 Gr. WCC
A 352 Gr. LCC
A 350 Gr. LF6 CL2
A 203 Gr. B
A 203 Gr. E
A 352 Gr. LC2
A 352 Gr. LC3
A 350 Gr. LF3
c-si Gr. LCB
352
C-Mn-Si
2’/2Ni
3’/2Ni
A
I
Forgings
CI.1
LF6
Gr.
350A
C-Mn-Si-V
2’/2Ni
3%Ni
1.3
Applicable ASTM Specifications’
2-1.3
I
A 515 Gr. 65
A 516 Gr. 65
A 203 Gr. A
A 203 Gr. D
~~
2-1.4c-si
C-Mn-Si A 350 Gr.
1.4
I
1.5
1.7
2-1.5
A 182 Gr. F I
2-1.7
1
1.13
A 204 Gr. C
A 217 Gr. WC4
A 217 Gr. WC5
182 Gr. F12 Cl. 2
A 217 Gr. WC6
A 387 Gr. 11 CI. 2
182 Gr. F11 CI. 2
21/4Cr-1 MO
Gr. F22 CI. 3
5Cr-1í*Mo
A 204 Gr. A
A 204 Gr. B
A 182 Gr. F2
1Cr-’/ZMo 2-1.9 A
1’/4Cr-’/~Mo
11/4Cr-1/zMo-SiA
1.10
A 217 Gr. WC1
A 352 Gr. LC1
C-’/~MO
C-Y~MO
1í2Cr-1/2Mo
Ni-’/~Cr-~/2Mo
3/4Ni-3/‘Cr-l M o
1.9
A 515 Gr. 60
A 516 Gr. 60
LFI Cl. 1
2-1.13 A
2-1.10
A 217 Gr. WC9 A 182
A 387 Gr. 22 C1.2
182 Gr. F5
A 182 Gr. F5a
A 217 Gr. C5
~
~~
~
1. I 4
~~
2-1.14
9Cr-1 Mo
9Cr-1Mo-V
A 182 Gr. F9
182
1.15
2-2.1
Gr.
A 217 Gr. C12
F91
2-1.15
A 217 Gr. C12A A
182 Gr. F304
182 Gr. F304H
A 351 Gr. CF3 A
A 351 Gr. CF8 A
A 35116Cr-12Ni-2Mo
Gr. CF3M
A 182 Gr. F316 2-2.2
2.2
A 182 Gr. F316H A 351
Gr. CFBM
18Cr-13Ni-3Mo
19Cr-1 ON¡-3Mo A
2.3
18Cr-8Ni
2.4 A
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A 387 Gr. 91 CL2
A 240 Gr. 304
A 240 Gr. 304H
A 240 Gr. 316
A 240 Gr. 316H
A 240 Gr. 317
351 Gr. CG8M
A
A
182
182
Gr.
Gr.
F304L
F316L
182 Gr. F321
A 182 Gr. F321H
2-2.3
16Cr-12Ni-2Mo
2-2.4
18Cr-ION¡-Ti
A 240 Gr. 304L
A 240 Gr. 316L
A 240 Gr. 321
A 240 Gr. 321 H
METER
LARGE
ASME B16.47a-1998
TABLE
LIST
1A
(a)
Material
Group
Nominal
Designation
zy
OF MATERIAL
SPECIFICATIONS
(CONT'D)
Applicable ASTM Specifications'
PressureTemperature
Rating Table
2.5
18Cr-1ONi-Cb
2-2.5
2.6
25Cr-12Ni
2-2.6
Forgings
A
A
A
A
182 Gr. F347
182 Gr. F347H
182 Gr. F348
182 Gr. F348H
Plates
Castings
A 351 Gr. CF8C
A
A
A
A
240 Gr. 347
240 Gr. 347H
240 Gr. 348
240 Gr. 348H
A 351 Gr. CH8
A 351 Gr. CH20
A 240 Gr. 309s
A 240 Gr. 309H
23Cr-12Ni
2.7
25Cr-20Ni
2-2.7
2.8
20Cr-18Ni-6Mo
22CrSNi-3Mo-N
25Cr-7Ni-4Mo-N
24Cr-1ONi4Mo-V
25Cr-5Ni-2Mo-3Cu
25Cr-7Ni-3.5Mo-W-Cb
25Cr-7Ni-3.5Mo-N-Cu-W
2-2.8
NOTE:
A 182 Gr. F310
A 351 Gr. CK20
A 240 Gr. 310s
A 240 Gr. 310H
A 351 Gr. CK3MCuN A 182 A
Gr.240
F44Gr. S31254
A 240 Gr. S31803
A 240 Gr. S32750
A 182 Gr. F51
A 182 Gr. F53
A 351 Gr. CE8MN
A 351 Gr. CD4MCu
A 351 Gr. CD3MWCuN
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A 182 Gr. F55
A 240 Gr. S32760
(1) ASME Boiler and Pressure
Vessel Code, Section II materials, whichalso meet the requirementsof the listed ASTM specifications, may also be used.
9
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R
LARGEASME B16.47a-1998
TABLE1B
LIST OF BOLTINGSPECIFICATIONS
Applicable ASTM Specifications”
Bolting Materials’
High Strength (2)
Spec.-Gr.
Notes
A 193-B7
A 193-BI6
.,.
A 320-L7
A 320-L7A
A 320-L7B
320-L7C
A
320-L43
A
A 354-BC
A 354-BD
A 540-B21
A 540-B22
A 540-B23
A 540-B24
...
(6)
(6)
(6)
(6)
(6)
Low Strength (4)
Intermediate Strength (3)
Spec.-Gr.
193-85
193-86
193-B6X
193-B7M
...
A 193-88 Cl. 2
193-B8C
A Cl.
2
A 193-B8M CI. 2
A 193-B8T
Cl.
2
(7)
A
A
A
A
Spec.-Gr.
Notes
...
...
...
A
A
A
A
193-B8 Cl. 1
193-B8C Cl. 1
193-B8M CI. 1
193-B8T Cl. 1
(7)
(7)
A 193-B8A
A 193-B8CA
A 193-B8MA
A 193-B8TA
(7)
A 307-B
(71
(7)
A 320-88 Cl.
(7)
Notes
...
...
...
...
...
A
A
A
A
A
320-B8 Cl.
320-B8C
Cl.
320-B8F
Cl.
320-B8M
Cl.
320-B8T
Cl.
2
2
2
2
2
(7)
(7)
...
A 449
(9)
A 453-651
A 453-660
(10)
(1O)
1
A 320-B8C Cl. 1
A 320-B8M Cl. 1
A 320-B8T CI. 1
GENERAL NOTE:
Bolting material shall not be used beyond temperature limits specified in the governing code.
NOTES:
(1) Repair welding of bolting material is prohibited.
(2) These bolting materials may be used with all listed materials and gaskets.
(3) These bolting materials may be used with all listed materialsand gaskets, provided it has
been verified that a sealed joint can be maintained under rated working pressure and
temperature.
(4) These bolting materials may be used with all listed materials but are limited to Class 150
and Class 300 joints. See para. 5.4.1 for recommended gasket practices.
but strainhardened.
(5) This austenitic stainless material has been carbide solution treated not
Use A 194 nuts of corresponding material.
(6) This ferritic materialis intended for low temperature service.Use A 194 Gr.4 or Gr. 7 nuts.
(7) This austenitic stainless material has been carbide solution treated and strain hardened.
Use A 194 nuts of corresponding material.
(8) This carbon steel fastener shall not be used above 400°F or below -20°F. See also Note
(4). Bolts with drilled or undersized heads shall not be used.
(9) Acceptable nuts for use with quenched and tempered bolts are A 194 Gr. 2 and Gr. 2H.
Mechanical property requirements for studs shall be the same as those for bolts.
(IO)
This special alloy is intended for high temperature service with austenitic stainless steel.
(11) ASME Boiler and Pressure Vessel Code, Section II materials, which also meet the requirements of the listed ASTM specifications, may also be used.
zyxwvu
10
COPYRIGHT American Society of Mechanical Engineers
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zyxwvut
zyxwv
zyxw
m
S T D = A S M E B L b = q 7 A - E N G L L798
METER
0757b70 OLlr8Y3L 7 T 4
LARGE
ASME B16.47a-1998
TABLES 2 PRESSURE-TEMPERATURE RATINGS FOR GROUPS 1.1
THROUGH 2.8 MATERIALS
TABLE 2-1.1 RATINGS FOR GROUP 1.1 MATERIALS
Nominal
Designation
Castings
c-si
A 105 (1)
C-Mn-Si
A 350 Gr. LF2 (1)
C-Mn-Si-V
A 350 Gr. LF6 Cl. 1 (4)
Plates
Forgings
A 216 Gr. WCB (1)
A 515 Gr. 70 (1)
A 516 Gr. 70 (1)(2)
A 537 Cl. 1 i3)
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NOTES:
(1) Upon prolonged exposure to temperatures above 800°F. the carbide phase of steel may be
converted to graphite. Permissible, but not recommended for prolonged use above 800°F.
(2) Not to be used over 850°F.
(3) Not to be used over 700°F.
(4) Not to be used over 500'F.
WORKING PRESSURES BY CLASSES, psi!
. .J
600
900
1480
1350
2220
2025
1970
1900
1795
Class Temp., 'F
75
150
300
-20 to 100
200
300
400
500
140
130
115
1O0
85
285
260
740
675
200
170
600
900
875 655
845 635
800
70
60
140
125
110
95
80
550
535
535
505
41O
730
715
710
670
550
1095
1075
1065
1010
825
65
50
35
270
170
105
20
50
355
230
140
70
535
345
205
105
600
650
700
750
800
850
900
950
1O00
...
...
...
...
...
...
...
230
11
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
400
990
1270
1200
1640
1610
1600
1510
1235
805
515
310
155
1315
vutsrqponmlkji
zyxwvut
LARGE ASME B16.47a-1998
TABLE 2-1.2 RATINGS FOR GROUP 1.2 MATERIALS
(a)
Nominal
Designation
Castings
Plates
Forgings
A 216 Gr. WCC (1)
A 352 Gr. LCC (2)
A 350 Gr. LF6 C-Mn-Si-V
CI. 2 (3)
C-Mn-Si
2’4Ni
A 350 Gr. LF3
3%Ni
A 352 Gr. LC2
A 203 Gr. B (1)
A 352 Gr. LC3
A 203 Gr. E (1)
NOTES:
(1) Upon prolonged exposure to temperatures above 800°F, the carbide phase of steelmay be
converted to graphite. Permissible, but not recommended for prolonged use above 800’F.
(2) Not to be used over 650°F.
(3) Not to be used over 500OF.
zyxwvuts
zyxwvu
zyx
WORKING PRESSURES BY CLASSES. mia
75
150
300
400
600
-20 to 100
200
300
400
500
145
130
115
1O0
85
290
260
230
200
750
750
730
705
665
1O00
1000
1500
170
600
650
700
750
800
70
60
140
605
590
125
...
110
Class Temp.,
850
900
950
1O00
OF
1455
940
...
...
...
80
41O
65
50
35
20
270
170
105
50
12
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
2250
2250
970 2185
21 15
1995
1500
1410
1330
1815 1210
1765 1175
1705 1135
1010 670 1510
505 95
825 550 1235
...
...
...
900
355
230
140
70
345
205
805 535
51 5
31O
155 105
885
805
785
755
570
zyxwvutsrqponm
zy
STEEL U R G E DIAMETER
ASME B16.47a-1998
TABLE 2-1.15
Nominal
Designation
MeV
Class Temp., 'F
-20 to 100
200
300
400
500
600
650
700
750
800
850
900
950
1O00
1050
1100
1150
1200
RATINGS FOR GROUP 1.15 MATERIALS
(a)
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Plates
Castings
Forgings
A 387 Gr. 91 Cl. 2
A 182 Gr. F91 9Cr-1 A 217 Gr. C12A
400
600
900
750
290
750
260
230 115 730
705
200
665
170
1O00
1O 0 0
970
940
885
1500
1500
2250
2250
21 85
21 15
1995
605
590
570
530
51O
805
785
755
710
675
75
150
145
130
1O0
85
70
60
...
...
...
...
...
...
...
...
...
...
...
300
140
125
110
95
80
65
50
35
20
...
...
...
...
485
650
515
485
480
300
225
145
400
295
190
20.1
COPYRIGHT American Society of Mechanical Engineers
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600
450
385
365
360
1410
1330
1815
1210
1765
1175
1135 1705
1065 1595
1015
1525
1460
1350
1160
1O90
1080
975
900
775
725
720
605
445
290
905
670
430
1455
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~
STD.ASME BLh.47A-ENGL
STEEL LARGE DIAMETER
1778
m
zyxwvutsrqponmlkjihgfedcba
0757b70 DhLO434 b03
m
ASME B16.47a-1998
FLANGES
TABLE 2-2.7 RATINGS FOR GROUP 2.7 MATERIALS
Nominal
Designation
25Cr-20Ni
zyxwvuts
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Plates
Forgings
Castings
A 182 Gr. F310 (1)(3)
A 351 Gr. C U 0 (1)
A 240 Gr. 310s (1)(2)(3)
A 240 Gr. 310H
NOTES:
(1) At temperatures over lOOO'F, use only when the carbon content is 0.04% or higher.
(2) For temperatures above 1000°F. use only if the material is heat treated by heating it to a
temperature of at least 1900°F and quenching in water or rapidly cooling by other means.
(3) Service temperaturesof 1050°Fand above should beused only when assurance is provided
that grain size is not finer thanASTM 6.
WORKING PRESSURES BY CLASSES, psig
.~
Class Temp., OF
75
150
300
400
600
900
-20 to 100
200
300
400
500
130
115
110
1O0
85
260
235
220
200
170
670
570
535
505
895
81O
760
715
675
1345
1215
1140
1070
1015
2015
1820
1705
1605
1520
70
60
140
125
110
95
80
480
470
455
450
435
640
625
61O
600
580
960
935
91o
900
875
1440
1405
1370
1345
1310
65
50
35
20
425
420
385
345
335
570
555
515
460
450
855
835
775
685
670
1280
1255
1160
1030
1010
260
190
135
105
75
345
250
185
135
1O0
520
375
275
205
150
780
565
41O
31O
225
60
45
35
80
60
45
35
115
90
65
50
175
135
1O0
75
600
650
700
750
800
850
900
950
1O00
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
605
...
.
f
.
...
...
...
...
...
...
...
...
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25
21
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zyxwvuts
zyxwvuts
zyxw
LI70
*STD.ASflE BLb.47A-ENGL
ASME B16.47a-1998
m
0757b7fl ObLB'i35 5 4 T
FLANGES
llpl
STEEL LARGE DIAMETER
TABLE 2-2.8 RATINGS FOR GROUP 2.8 MATERIALS
(a)
Nominal
Designation
Forgings
Castings
Plates
20Cr-18Ni-6Mo
A 182 Gr. F44
22Cr-5Ni-3Mo-N
A 182 Gr. F51
A 240 Gr. S31803 (1)
25Cr-7Ni-4Mo-N
A 182 Gr. F53
A 240 Gr. S32750 (1)
A 240 Gr. S31254
A 351 Gr. CK3MCuN
24Cr-lONi-4Mo-V
A 351 Gr. CE8MN (1)
25Cr-5Ni-2Mo-3Cu
A 351 Gr. CD4MCu (1)
25Cr-7Ni-3.5Mo-W-Cb
A 351 Gr. CD3MWCuN (1)
25Cr-7Ni-3.5Mo-N-Cu-W
A 240 Gr. S32760 (1)
4 182 Gr. F55
NOTE:
(1) This steel may become brittle after service at moderately elevated temperatures. Not
to be
used over 600°F.
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WORKING PRESSURES BY CLASSES, psig
Class Temp., "F
-20 to 100
200
300
400
500
600
650
700
750
75
150
1O0
85
750 290 1
145
O00
260 130 720
960
230 115 665
200
615
820
170
575
770
70
60
.. .
...
300
140
125
110
95
555
550
540
28
COPYRIGHT American Society of Mechanical Engineers
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600
400
1500
1440
1330
1230
1150
740
735
1115
710
530
1100
1065
900
2250
2160
885 1995
1845
1730
1670
1650
1625 1085
1595
725
zyxwvutsrqponm
zyx
AMETER
STEEL FLANGES
LARGE
ASME B16.47a-1998
zyxwv
TABLE 12 DIMENSIONS OF CLASS 300 SERIES B FLANGES’+
1
2
O. D.
of
Nominal
Pipe
Size
60
r
3
Thickness of
Flange, Min.’
Flange
M F
O
C
73.94
4
0.69
5.94
Blind
C
5
6
7
8
Length
Through
Hub
Diam.
of
Hub8
Diams
fop
Raised
Face
Diam.
A
R
Y
X
119
Hub
r
Diam.
of Bolt
Circle
12
10
Drilling
No. of
Bolt
Holes
of Bok
Hole
2.38
6.56
Diam.
of
Bolt
13
Fillet
Radius
Diam.
Min.
r1
zyxw
40
2%
69.44
(Notes follow Table 15)
41
COPYRIGHT American Society of Mechanical Engineers
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65.00
60.3
zyxwvut
zyxwvuts
zyx
S T D * A S M E BLb-LI7A-ENGL 1778 E 0 7 5 7 b 7 l l Ob18437 312 I
A S M E B16.47a-1998
DIAMETER
LARGE
zyxwvutsrqp
zyxwvut
TABLE 13 DIMENSIONS OF CLASS 400 SERIES
B
(a)
1
2
I
3
36
Thickness of
Flange,
Min.’
45.50
I
38
...
40
...
I
WNF
...
...
...
...
I
...
...
...
...
I
Hub
Diams
lop
37.50
I
8
7
I
Diam.
of
7.88
4.69
I
I
Length
Through
Hub8
Hub
Blind
4.69
I
6
S
4
l
O. D.
of
Flange
Pipe
STEEL FLANGES
9
...
...
10
I
Raised
Face
Diam.
No. Of
Bolt
Diam.
of Bolt
42.00
I
I
f
.
.
...
11
Drilling
38.62
36.00
I
FIANGES’4*’o
...
...
28
I
...
...
*..
...
...
...
...
...
...
...
...
13
Diarn.
Fillet
Radius
Min.
1 - 4I
Diam.
r?
0.44
zyx
zyxw
zyx
...
60
12
I
I
...
1
...
l
(Notes follow Table 15)
42
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zyxwvutsrqponm
zyxwvutsrq
zyx
METER
STEEL FLANGES
LARGE
ASME 816.47a-1998
TABLE 14 DIMENSIONS OF CLASS 600 SERIES B FIANGES'-6,'o
1
2
4
5
7
8
Diam.s
TOP
Raised
Face
Diam.
X
A
R
27.50
26.00
7.12
28.62
4.38
6
12
13
Drilling
Fillet
Diam.
NO. Of
Diam.
Diam.
of Bolt
Bott
Holes
of Bolt
of
Radius
Min.
Hole
Bolt
r1
28
31.75
1.75
178
0.50
1.88
28
13/4
0.50
2.00
17/8
0.50
9
10
11
zyxwvutsrqpo
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O. D.
of
Nominal
Pipe
Size
26
3
Thickness of
Flange, Min.'
mange
WNF
O
C
4.38
C
Diam.
Length
of
Through
Hub8
Hub Blind
r
35.00
Hub
Circle
28
37.50
7.50
4.56
28.00
4.56
29.62
30.88
34.00
30
40.25
8.06
31.75
5.00
4.94
33.12
36.50
30.00
32
33.88
5.12
34
45.75
36
47.75
5.68
5.75
...
38
42.75
8.50
5.56
9.19
9.56
5.94
28
5.31
2.12
28
2
0.50
38.75
37.50
41.50
34.00
24
36.00
2.38
2'/4
0.56
39.75
43.50
36.00
38.12
28
2.38
2'/4
0.56
...
...
...
...
...
...
...
...
...
...
...
...
......
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
40
...
42
...
...
...
...
...
...
60
...
...
...
...
...
35.25
(Notes follow Table 75)
43
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
32.00
zyxwvutsrqp
zyxwvutsrqp
ASME B16.47a-1998
LARGE DIAMETER STEEL FLANGES
zyxwvutsrq
zyxwvuts
TABLE 15 DIMENSIONS OF CLASS 900 SERIES B FLANGES1b, lo
(a)
1
Nominal
Pipe
Size
2
3
4
Thickness of
Flange, Min.'
5
6
Diam.
of
Hube
X
O. D.
of
Flange
WNF
Blind
Length
Through
Hub
O
C
C
Y
26
6.06
43.50
528
.81
6.12
46.50
6.93
32
6.31
748.75
.31
6.75
7.68
34
51.75
36
53.00
38
...
...
...
40
...
...
60
...
...
8
9
Diam.
of
Bolt
13
Fillet
Radius
Min.
rl
2.62
35.50
38.25
28.00
20
2.88
274
0.50
40.75
34.50
20
3.12
30.00
333.50
11.38
0.50
43.00
36.50
20
3.12
3
0.50
39.00
45.50
34.00
37.88
20
3.38
3'/4
0.56
12.81
7.94
47.25
6.81
40.50
24
3.12
36.00
3
0.56
...
..
...
...
...
...
*
...
.*.
...
...
...
...
...
...
...
32.25
32.00
11.94
12.56
40.00
12
11
20
6.56
31.38
35.75
10
Hub
Raised
Drilling
'
Diam.s Face
Diam. No.
Diam.
of
Diam.
of Bolt
Bolt
of Bolt
A
R
Hole
Holes Circle
10.19 40.25
5.31
10.88
30
7
...
...
...
...
...
...
...
...
...
...
...
30.00
2'12
0.44
26.00
...
zyxw
zyxw
...
(Notes follow on next page)
44
COPYRIGHT American Society of Mechanical Engineers
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29.25
...
zyx
zyxwvutsrqpo
LARGE DIAMETER STEEL FLANGES
(a)
ASME
ASME B16.47-1996
zyxwvutsrqp
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The -American Society of Mechanical Engineers
Three Park Avenue, New York, New York 10016-5990
ASME Order Department
22 Law Dnve, Box 2300, Fairfield, New Jersey 07007-2300
(a)
ASTM
MSS
American Society for Testing and Materials
100 Barr Harbor Drive, West Conshohocken, Pennsylvania 19428-2959
Manufacturers Standardization Society of the Valve & Fittings Industry
127 Park Street, N.E., Vienna, Virginia 22180
IS0 documents are available from ANSI. Publications appearing above which have been approved
National Standards may also be obtained from ANSI.
ANSI
American National Standards Institute, Inc.
11 West 42nd St., New York, New York 10036
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COPYRIGHT American Society of Mechanical Engineers
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as American
zyxwvu
~~
S T D - A S t l E BLb*Y7A-ENGL 1778
zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFE
0757b70 Ob18441 843
m
INTERPRETATIONS TO ASME B16.47
(These interpretations are not part of ASME 816.47-1996 and areincludedfor information only. These interpretations
apply to the 1988 and earlier editions and the requirements cited may be different in this Edition. Therefore, some
replies may not be valid in regard to this Edition.)
INTRODUCTION
zyxwvutsrq
As a service to persons whousethe
B16 standards, the B16 Committee rendersinterpretations
in
the requirements upon request. The procedure for requesting an interpretationisdescribed
following paragraphs.
been approved by the B16 MainCommittee
The interpretations include all replieswhichhave
response to inquiries concerning interpretation of this Standard.
An interpretation applies either to the Edition and Addenda in effect on the date of issuance of
in theinterpretation.Subsequentrevisionstothis
interpretation or the Edition andAddendastated
Standard may supersede the interpretation.
of
the
in
the
PROCEDUREFOR REQUESTING INTERPRETATIONS
On request, the B16 Committee will render an interpretation of anyrequirement of this Standard.
Interpretations canonly be renderedinresponse
to a writtenrequest,whichshouldbeaddressedto:
zyxwvutsrq
zyxwvuts
zy
zyxwvutsrqpo
Secretary, B16 Main Committee
The American Society of MechanicalEngineers
T h r e e Park Avenue
New York, NY 10016-5990
The request for interpretation should be clear and unambiguous. It is further recommended that the
inquirer submit his request usingthefollowingformat:
(a) Subject. Cite the applicable paragraph number(s) and/or give a concise description of the subject.
(b) Question. Phrase the question as a request for an interpretation of a specific requirement suitable
for general understanding and use, not as a request for an approval of a proprietary design or situation.
The inquirer may also include anyplans ordrawings whicharenecessary
to explainthe question;
however, they should notcontainproprietarynames
or information.
Requests which are notinthisformatmayberewritten
in thisformatpriortobeing
answered,
whichmay inadvertently change theoriginalintent of the request.
ASME procedures provide for reconsideration of an interpretation when or if additional information
is available which the inquire believesmight affect theinterpretation.Further,personsaggrieved
by
an interpretation may appeal to thecognizantASME
committee or subcommittee. ASME does not
“approve,” “certify,” “rate,” or “endorse”anyitem, construction, proprietary device, or activity.
61
COPYRIGHT American Society of Mechanical Engineers
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zyxwvutsrqp
816.47 interpretations No. 2
2-1
INTERPRETATIONS NO. 2
zy
zyx
zyxw
Replies to Technical Inquiries Issued from January 1, 1996 Through December 31, 1997
Interpretation: 2-1
Subject:
Series A Flanges
Date Issued:
April 30, 1997
File:
B 16-96-013
Question: According to ASME B16.47-1990, may Series A flanges be manufactured and used for all
materials listed in Table IA?
Reply: Yes, within the restriction of General Note (b) of Table 1A.
65
COPYRIGHT American Society of Mechanical Engineers
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S T D - A S M E BLb.47A-ENGL
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zyxwv
zy
1778 9 0 7 5 9 6 7 0 Ob18443 b l b
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
The American Society of
Mechanical Engineers
A N
A M E R I
C A N A T I O N A S
L T A N D A R D
z
LARGE DIAMETER
STEEL FLANGESz
-
"-v
NPS 26 Through NPS 60
ASME B16.47-1MUM
(Revision of ASME B16.47-1990)
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zyxwvuts
z
S T D - A S M E BLb-47-ENGL L77b
m
0757b70 0 5 7 7 L b U q 7 T H
Date of Issuance: January 31, 1997
zyxw
The 1996 edition of this Standard is being issued with an automatic addenda
subscription service. The useof an addendaallows revisions made in response
to public reviewcomments or committee actions to be published as necessary;
revisions published in addenda will become effective 6 months after the Date
of Issuance of the addenda. The next edition of this Standard is scheduled for
publication in 2001.
ASME issues written replies to inquiries concerning interpretations of technical
aspects of this Standard. The interpretations will be included with the above
addenda service. Interpretations are not part of the addenda to the Standard.
ASME is the registeredtrademark of The American Society of Mechanical Engineers.
This code or standard was developed under procedures accreditedas meeting the criteria for
American NationalStandards. The ConsensusCommittee that approved the code
or standard was
balanced t o assure that individuals from competent and concerned interests have had
an
opportunity to participate. The proposed code or standard was made available for public review
and comment which providesan opportunity for additional public inputfrom industry, academia,
regulatory agencies, and the public-at-large.
ASME does not "approve," "rate," or "endorse" any item,
construction, proprietary device, or
activity.
ASME does not take any position with respect to the validity of any patent rights asserted in
connection with any items mentionedin this document, and does not undertaketo insure anyone
utilizing a standardagainst liability for infringement of any applicable LettersPatent, nor assume
any such liability. Users of a code or standard are expressly advised that determination of the
validity of any such patentrights, and the riskof infringement of such rights, is entirely their own
responsibility.
Participation by federal agency representative(s) orperson(s) affiliated with industry
is not to be
interpreted as government or industry endorsementof this code or standard.
ASME acceptsresponsibility for only those interpretations issued
in accordance with governing
ASME procedures and policies which preclude theissuance of interpretations by individual
volunteers.
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No part of this documentmay be reproduced in any form,
in an electronic retrieval system or otherwise,
without the prior written permissionof the publisher.
The American Society of Mechanical Engineers
345 East 47th Street, New York, NY 10017
Copyright Q 1997 by
THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS
All Rights Reserved
Printed in U.S.A.
COPYRIGHT American Society of Mechanical Engineers
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FOREWORD
(This Foreword is not part of ASME 616.47-1996.)
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In November, 1980, a task force was appointed within Subcommittee C of the American
National Standards (ANSI)B16Committee to developastandard for pipeflangesin size
NPS26throughNPS48.Everyattemptwasmade
to standardize those dimensionsthat
existedwithintheindustry
for the materialscoveredbyANSIB16.5.
Prompted by suggestions received from committee members, the task force was authorized
toincrease the sizerange to NPS60. The firstdraftwasdevelopedinDecember
1982 to
include Class 75 throughClass 1500 forthe size rangeNPS26throughNPS
60. Hange
dimensions were basedontheManufacturersStandardizationSociety
Standard Practice
(MSS SP)44 flangesexcept for Class 75 flangeswhich are ANSUAPI 605 flanges.
At the request of the American Petroleum Institute (API), flange dimensions in accordance
with the API Standard 605 were included in the subsequent drafts. Class
1500 flanges were
deleted due to lack of interest in using large size flanges in that pressure-temperature rating.
The APL605flanges for Classes 150 and 300 and for sizes NPS 36 andsmaller for
classes higherthan Class 300 are notcompatiblewiththe
MSS SP-44flanges.Thus, the
MSS SP-44 flanges are designated as Series A flanges and the API-605 flanges are designated
this Standard are as inANSI
as Series B flanges in this Standard. Materialscoveredin
B16.5 except nickel base alloys are excluded. Pressure-temperature ratings are in accordance
withANSI B16.5.
In 1982,AmericanNationalStandardsCommitteeB16wasreorganized
as theAmerican
Society of Mechanical Engineers(ASME)
B16 Committeeoperatingunderprocedures
accredited by ANSI. Following approval by the Standards Committee and ASME, approval
asanAmericanNationalStandardwasgiven
by ANSIon June 12,1990.
This 1996 Edition allows flanges marked with more thanone material grade or specification,
revises flange facing finish requirements, has revised pressure-temperature ratings for several
material groups, adds permissible flange facing imperfections,
adds blind flanges for Series
Bflanges,and
includes several otherrevisions.Followingapprovalby
the Standards
CommitteeandASME,approval
as anAmericanNationalStandardwasgiven
by ANSI
onOctober 3, 1996withthenewdesignation
ASME B16.47-1996.
All requests for interpretations or suggestions for revisions should be sent to the AdministrativeSecretaryB16,
The AmericanSociety of MechanicalEngineers,UnitedEngineering
Center, 345East47th
Street, New York, NY 10017.
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ASME B16 Committee
Standardization of Valves, Flanges, Fittings, Gaskets, and Valve
Actuators
(The following is a roster of the Committeeat the time of approval of this Standard.)
OFFICERS
W. N. McLean, Chair
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R. A. Schmidt, Vice Chair
K. M . Ciciora, Secretary
COMMITTEE PERSONNEL
W. L. Ballis, Columbia Gas Distribution Co., Columbus, Ohio
R. R. Brodin, Fisher Controls International, Inc., Marshalltown, Iowa
M. A. Clark, Nibco Inc., Elkhart, Indiana
A. Cohen, Copper Development Association, Inc., New York, New York
W. C. Farrell, Jr., Consultant, Birmingham, Alabama
C. E. Floren, Mueller Co., Decatur, Illinois
D. R. Frikken, Monsanto Co., St. Louis, Missouri
M. W. Garland, Frick Co., Waynesboro, Pennsylvania
J. C. Inch, Mueller RefrigerationProducts Co., Hartsville, Tennessee
G. A. Jolly, The Henry Vogt Machine Co., Louisville, Kentucky
W. G. Knecht, Consultant, Williamsport, Pennsylvania
R. A. Koester, The William Powell Co., Cincinnati, Ohio
W. N. McLean, Newco Valve Co., Palos Park, Illinois
M. L. Nayyar, Bechtel Corp., Gaithersburg, Maryland
R. A. Schmidt, Ladish Co., Russellville, Arkansas
W. M. Stephen, Flexitallic Inc., Pennsauken, New Jersey
T. F. Stroud, Ductile Iron Research Association, Birmingham, Alabama
M. D. Wasicek, ABS Americas, Houston, Texas
R. E. White, Richard E. White b Associates, South Bend, Indiana
D. A. Williams, Southern Company Services, Birmingham, Alabama
L. A. Willis, Dow Chemical Co., Freeport, Texas
W. R. Worley, Union Carbide Corp., South Charleston, West Virginia
PERSONNEL OF SUBCOMMITTEE C
FLANGED FllTlNGS
- STEEL FLANGES AND
D. R. Frikken, Chair, Monsanto Co., St. Louis, Missouri
K. M. Ciciora, Secretary, ASME International, New York, New York
V. C. Bhasin, Sigmatech, Pittsburgh, Pennsylvania
G. D. Conlee, Consultant, St. Louis, Missouri
W. C. Farrell, Jr., Consultant, Birmingham, Alabama
M. L. Henderson, Coffer Corp., Houston, Texas
R. E. Johnson, Flowline Div., New Castle, Pennsylvania
R. Koester, The William Powell Co., Cincinnati, Ohio
R. Madewell, Flo-Bend Inc., Sand Springs, Oklahoma
W. N. McLean, Newco Valve Co., Palos Park, Illinois
V
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M. L Nayyar, Bechtel Corp., Gaithersburg, Maryland
R. A. Schmidt, Ladish Co., Russellville, Arkansas
D. L. Shira, Taylor Forge, Cordova, Tennessee
J. C.Thompson, Milwaukee Valve, Rising Sun, Maryland
L. A. Willis, Dow Chemical Co., Freeport, Texas
vi
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CONTENTS
Foreword .......................................................................
Standards CommitteeRoster ......................................................
1 scope ....................................................................
2 Pressure-Temperature Ratings ..............................................
3 Size ......................................................................
4 Marking ..................................................................
Materials
5
.................................................................
6 Dimensions ...............................................................
7 Tolerances ................................................................
8 Test ......................................................................
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Figures
1WeldingEnds(WeldingNeckFlanges.
No BackingRings):Bevel
for
Wall Thicknesses r from 0.19 in . to 0.88 in.,Inclusive ...................
2 Welding Ends (WeldingNeckFlanges.
No BackingRings):Bevel
for
Wall Thicknesses t Greater Than 0.88 in .................................
3 WeldingEnds(WeldingNeckFlangesWithBackingRings):
Inside
Contour for UseWithRectangularBackingRing
.........................
4 WeldingEnds(WeldingNeckFlangesWithBackingRings):Inside
Contour for UseWith Taper BackingRing ...............................
5 WeldingEnds(WeldingNeckFlanges):Additional
Thickness for
Welding to Higher Strength Pipe.Bevel for OutsideThickness ............
6 Welding Ends (WeldingNeckFlanges):Additional
Thickness for
Welding to Higher Strength Pipe.Bevel for Inside Thickness .............
7 WeldingEnds(WeldingNeck
Flanges): Additional Thickness for
Welding to HigherStrength Pipe. Bevel for Combined Thickness . . . . . . . . . .
iii
V
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Tables
1A List of Material Specifications .............................................
1B List ofBoltingSpecifications
..............................................
2 Pressure-TemperatureRatingsfor
Groups 1.1 through 2.8 Materials . . . . . . . . . .
3 Dimensions of Ring-JointFacings
..........................................
4 FlangeBolting DimensionalRecommendations
..............................
5Dimensions
of Class 150 Series A Flanges .................................
6 Dimensions of Class 300 Series A Flanges .................................
7 Dimensionsof Class400 Series A Flanges .................................
8 Dimensions of Class 600 Series A Flanges .................................
9 Dimensions of Class900 Series A Flanges .................................
10 Dimensions of Class75 Series BFlanges
..................................
11 Dimensions of Class150 SeriesBFlanges
.................................
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31
31
32
32
33
33
33
8
10
11
29
30
34
35
36
37
38
39
40
12
13
14
15
16
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Dimensions of Class 300 Series B Flanges .................................
Dimensions of Class 400 Series B Flanges .................................
Dimensions of Class 600Series B Flanges .................................
Dimensions of Class 900 Series B Flanges .................................
Permissible Imperfections in Flange Facing Finish ..........................
41
42
43
44
46
Annexes
A
Methods for Establishing Pressure-Temperature Ratings .....................
B
Gaskets (Other Than Ring-Joint) ...........................................
C
Method for Calculating Bolt Lengths .......................................
D
Quality System Program ...................................................
E
References ................................................................
47
51
53
55
57
Figures
Gasket Groups and Typical Materials .......................................
Cl Specified Stud-Bolt Length ................................................
52
53
Tables
A l Rating Ceiling Values .....................................................
C l F Values .................................................................
C2 n Values ..................................................................
49
53
53
B1
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Interpretations
...............................................................
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61
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~~
STD-ASME BLb.47-ENGL L99b
m
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~
0 7 5 9 b 7 0 0 5 7 9 L b b 908 H
ASME 816.47-1996
LARGE DIAMETER STEEL FLANGES
1
SCOPE
1.1 General
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for operationat a pressureexceedingthepressuretemperatureratingsin this Standard.
1.4ApplicableRatings
ThisStandardcovers
pressure-temperatureratings,
materials, dimensions, tolerances, marking, and testing
for pipe flanges in sizes NPS 26 through N P S 60 and
in ratings Classes 75, 150, 300, 400, 600, and 900.
Flanges may be cast, forged, or plate (for blind flanges
only) materials, as listed in Table 1A.
Requirements and recommendations regarding bolting
and gaskets are also included.
The pressure-temperature ratings in this Standard are
applicable upon its publication to all flanges within its
scope which otherwise meet its requirements. For unused
flangesmaintainedin
inventory, themanufacturerof
theflangemaycertify
conformance to this Edition,
providedhecan
demonstrate thatallrequirements
of
thisEditionhavebeenmet.Wheresuchcomponents
were installed in accordance with the pressure-temperature ratings of an earlier edition of this Standard, those
ratings are applicable, except as may be governedby
theapplicable code or regulation (see para. 1.3.2).
1.2FlangeSeries
This Standardprovidestwo series of flangedimensions. Series A specifies flange dimensions for general
useflanges. Series B specifies flange dimensionsfor
compact flangeswhich,in
general, havesmallerbolt
circle diameters than Series A flanges. These two series
offlangesarenot
interchangeable. The usershould
recognize thatsomeflangedvalves,equipmentbolted
betweenflanges,andflangedequipmentmayonlybe
compatible withbolt circle diameter ofone series of
flanges.
1.5UserAccountability
ThisStandard cites duties andresponsibilities that
are to be assumedby the user in the areasof application,
installation, hydrostatic testing, operation, and material
selection.
1.6 QualitySystems
Nonmandatory requirements relating to the product
manufacturer’sQuality System Programaredescribed
inAnnex D.
1.3 References
1.3.1 Referenced Standards. Standards and specificationsadoptedby
reference inthisStandard
are
showninAnnexE,whichispartofthisStandard.It
is not considered practical to identify the specific edition
ofeachstandardandspecificationinthe
individual
references. Instead, the specificeditionreference
is
identified in Annex E. A flange manufactured in accordance with earlier editions of the referencedstandards,
andinall other respects conforming to this Standard,
will beconsideredto
bein
conformance withthis
Standard.
2 PRESSURE-TEMPERATURE RATINGS
2.1 RatingBasis
Ratings are maximum allowable working gage pressures, at the temperatures shownin Table 2 for the
applicable material and rating. For intermediate temperatures, linear interpolationispermitted.
S e e Annex A,
which is part of this Standard, for methods of establishingpressure-temperatureratings.
1.3.2CodesandRegulations.
A flange
used
under the jurisdiction of the ASME Boiler and Pressure
Vessel Code (ASME BPV Code), the ASME Code for
Pressure Piping, or a governmental regulation is subject
to any limitation of that code or regulation. This includes
anymaximum temperature limitation, rulegoverning
the use of a material at low temperature, or provisions
2.2 RatingsofFlangedJoints
A flanged joint iscomposed of three separate and
independent,althoughinterrelated,components:the
flanges, the gasket, and thebolting, which are assembled
by yet another influence, the assembler. Proper controls
mustbeexercisedinthe
selection andapplication for
1
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ASME B16.47-1996
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LARGE DIAMETER STEEL FLANGES
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2.4.2 Low Temperature Service. Some of the
materials listed inthe rating tables undergosufficient
decrease intoughness at lowtemperaturesthatthey
cannot safelysustain shock loadings,sudden changes
of stress or temperature, or high stress concentrations.
all these elements in order to attain a joint which has
acceptable leaktightness. Special techniques such as
controlled bolt tightening may be necessary to achieve
a tight joint in service.
Ratings in this Standard apply toflanged joints which
conform to the limitations on bolting inpara. 5.3 and
on gaskets in para. 5.4, andwhicharemade
up in
accordance with good practice for alignment and assembly. See also para. 2.4. Use of the ratings
for flanged
joints not conformingto these limitations isthesole
responsibilityoftheuser,Requirements
for alignment
and assembly of joints are not given in this Standard.
If the two flangesinaflanged
jointdo nothave
the same pressure-temperature ratings, the rating of
the joint at any temperature is the lower of the two
flangeratings at thattemperature.
2.5 System Hydrostatic Test
Flanged joints may be subjected to system hydrostatic
tests ata pressure notto exceed 1.5times the 100°F
ratingrounded off to thenexthigher
25 psi.
Testing at any higher pressure is the responsibility
of the user, subject to the requirements of the applicable
code or regulation.
2.6 Welding NeckFlanges
Ratings for carbon steel cylindrically bored welding
neck flanges covered by this Standard are basedupon
their hubsattheweldingendhavinga
thickness at
least equal to that calculated for pipe having 40.0 ksi
specifiedminimumyield
strength. The ratings also
apply to such flanges used with components of unequal
strength and unequal wallthickness when the attachment
welds is madein accordance withthe applicable code
or regulation. See Figs. 5, 6, and 7.
2.3 Rating Temperature
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The temperature shown for a corresponding pressure
ratingis the temperature of the pressure containing
shell oftheflange. In general,thistemperature is the
same as that of the contained fluid. Use of a pressure
ratingcorresponding to a temperature other thanthat
of the contained fluid is the responsibility of the user,
subject to the requirements ofthe applicable code or
regulation. For any temperature below -20°F the rating
shall beno greater thantheratingshown
for -20°F.
2.7 MultipleMaterial Grades
Materials for flanges may meet the requirements for
more than one specification or grade of a specification
listed in Table 1A. In that event, the pressure-temperatureratingsforanyof
these specifications or grades
may be used provided that the marking is in accordance
withpara.4.1.2(d).
2.4 Temperature Considerations
Application of the ratings in this Standard to flanged
joints both highandlow temperatures shall takeinto
consideration the riskof leakagedueto
forces and
moments developed in the connected piping or equipment. The following provisions are intended to minimize
these risks.
3 SIZE
3.1 Nominal Size
The size of a flange covered by this Standard is its
nominal pipe size (NPS). The diameter of a bolt is its
nominal size. Use of nominal
indicates that the stated
size or dimension is only for designation, not measurement. The actual dimension may or maynotbethe
nominal size andis subject to established tolerances.
2.4.1High Temperature Service.Attempemtures in the creep range, gradual relaxation of flanges,
bolts, and gaskets may progressively reduce bolt loads.
It may be necessary to arrange for -periodic tightening
of bolts to prevent leakage. Joints subject to substantial
thermal gradientsmayrequire
the same attention.
When used above 400°F, Classes 75 and 150 flanged
joints may developleakage unless care istaken to
avoidimposing
severe external loads andor severe
thermal gradients. For other classes, similarconsiderationshould be given above 750 F.
4 MARKING
4.1 General
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Except as modified herein, flanges shall bemarked
as requiredin MSS SP-25.
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L 7 7 b H 0 7 5 7 b 7 0 0 5 7 9 L b 8 780
S T D - A S M E BLb.47-ENGL
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LARGE DIAMETER STEEL FLANGES
ASME B16.47-1996
4.1.1 Name. The manufacturer’sname or trademark
shall be applied.
in Table1B. (See also para.5.3.) The ASME Boiler
and Pressure Vessel Code, Section II materials, which
also meet the requirements of the specifications listed
in Table 1, may also beused.
4.1.2 Materials
( a ) Cast flanges shall bemarkedwiththeASTM
specification’, grade identification symbol, and the melt
numberidentification or meltidentification.
( b ) Plate flanges and forged flanges shall be marked
with the ASTM specification number and grade identification symbol.
( c ) A manufacturer may supplement these mandatory
material indications withhistradedesignation
for the
materialgrade,but
confusion of symbols shall be
avoided.
(d) Flanges manufactured from material which meets
the requirements for morethanone
specification or
grade of a specification listed in Table 1Amaybe
marked with more than one of the applicable specification or grade symbols. The symbols shall beplaced
to avoidconfusioninidentification.
5.1.1 Application. Criteria for the selection of materialsarenotwithin
the scope of this Standard. The
possibility of material deterioration in service should
be considered by the user. Carbidephaseconversion
to graphite and excessive oxidation of femtic materials
or susceptibility to intergranular corrosion of austenitic
materials are among those items requiring attention. A
detailed discussion of precautionary considerations can
be found inAppendix F ofASMEB31.3.
5.1.2 Toughness. Some of the materials listedin
Table 1Aundergo a decrease intoughnesswhenused
at low temperatures, to the extent that codes referencing
this Standard may require impact tests
for applications
evenattemperatures
higher than +20”F. It is the
responsibility of the user to assure that such testing is
performed.
4.1.3 Rating Class. The marking shall be the applicable pressurerating class: 75 (Series B only), 150,
300, 400, 600, or 900.
5.1.3 Responsibility. When service
conditions dictate the implementation of special material requirements,
e.g., using a Group 2 material above 1000”F,it is the
user’s responsibility to so specify to themanufacturer
in order to ensure compliance with metallurgical requirementslistedinthenotesin
Table 2.
4.1.4Designation. The designation of Series A
B16/A for flange dimensions in accordance with Tables
5 through 9 and Series B B16/B for flange dimensions
inaccordancewith
Tables10
through15shallbe
applied, preferably located adjacent to the class designation, to indicate conformance to thisStandard.
5.2 MechanicalProperties
4.1.5 Temperature. No temperature markings are
requiredonflanges,butifmarked,
the temperature
shall be shown with itscorresponding tabulated pressure
ratingfor the material.
Mechanicalpropertiesshallbeobtainedfromtest
specimens that represent the final heat-treated condition
of the material.
5.3Bolting
4.1.6Size. The nominalpipesizeshallbegiven.
Boltinglistedin Table 1B isrecommended for use
inflange joints covered by thisStandard.Bolting
of
other material may be used if permitted by the applicable
code or governmental regulation. All bolting materials
are subjecttothefollowing
limitations.
4.1.7 Ring-Joint Flange. The edge [periphery) of
eachring-jointflange shall bemarkedwiththe
letter
“R” andthecorrespondingring-groovenumber.
5 MATERIALS
5.3.1 High Strength Bolting.Boltingmaterials
having allowable stresses not less than those for ASTM
A 193 Gr. B7 are listed as high strength in
Table 1B.
These and other materials of comparable strength may
beusedinanyflanged
joint.
5.1 General
Flangescovered by thisStandardshallbecastings,
forgings, and (for blindflanges only) plate, as listed
in Table 1A. Recommended bolting materials are listed
5.3.2 IntermediateStrength Bolting. Bolting
materials listed as intermediate strengthin Table lB,
and other bolting of comparable strength, may be used
inanyflanged
joint, providedtheuserverifies
their
’ The ASME Boiler and Pressure Vessel Code, Section II specification
numbermay
Section II.
besubstitutedprovidedthematerial
is covered by
3
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ASME 816.47-1996
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LARGE DIAMETER STEEL FLANGES
withstandtheexpected
bolt loading without injurious
crushing, and which are suitable for the service conditions. Particular attention should begiven to gasket
selection if a system hydrostatic test approaches the
testpressurespecifiedinpara.
2.5.
ability to seat the selected gasket and to maintain a
sealed joint under expected operating conditions.
5.3.3 Low StrengthBolting.Boltingmaterials
having not more than 30 ksi specified minimum yield
strength are listed as low strength in Table 1B. These
materialsand others of comparable strength shall be
used only in Classes 75, 150, and 300 joints, and only
with gaskets describedin para. 5.4.1.Flanged joints
using low strength carbon steel bolts shall not be used
above 400°F or below-20°F.
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5.4.1Gasketsfor
Low StrengthBolting.
If
bolting listed as low strength in Table 1B is used,
gaskets showninAnnex
B, Fig. B 1, Group Ia,shall
beused.
5.3.4Bolting to GrayCast Iron Flanges. The
following recommendations are made in recognition of
the lowductilityof gray cast iron.
( a ) Where Class 150 steel flanges are bolted to Class
125 cast iron flanges, the gaskets should be madeof
Group Iamaterials, the steelflangesshouldhave
flat
faces, and:
( I ) lowstrength bolting within the limitations of
para. 5.3.3 should be used with ring
gaskets extending
to the bolt holes; or
(2) bolting of low (para. 5.3.3), intermediate (para.
5.3.2), or high (para. 5.3.1) strength may be used with
full face gaskets extending to the outside diameters of
the flanges.
(b) Where Class 300 steel flanges are bolted to Class
250castironflanges,
the gaskets shouldbemade of
Group Ia materialsand:
( I ) lowstrength bolting withinthelimitations of
para.5.3.3should
be usedwith gaskets extending to
the bolt holes and with flanges having
either raised or
flat faces; or
(2) bolting of low (para. 5.3.3), intermediate (para.
5.3.2), or high (paca. 5.3.1) strength may be used with
full face gaskets extending to the outside diameters of
the flanges and with both the Class 300 steel and Class
250 cast ironflanges having flatfaces.
(c) Alignment of flange faces is essential along with
control of assembly bolt torque so as not to over-stress
the cast iron flanges.Cacemust also beexercised to
ensure that piping loads transmitted to cast iron flanges
are controlled taking into account its lack of ductility
and recognizing thatcast iron flanges should notbe used
wheresuddenly applied loads such as rapidpressure
fluctuationsmayoccur.
5.4.2 Gaskets for Class 150 Flanged Joints. It
is recommendedthat only Fig. B1,Group Ia or Ib
gaskets beused for Class 150 flanged joints.
5.4.3 Gaskets for Class
75 FlangedJoints.It
isrecommendedthat
onlyGroup Ia gaskets with a
gasket factor m = 2or less, andminimumdesign
seating stress y = 1600 psi or less, beused. The m
and y factors are those given in Table 2-5.1, Appendix
2 of theASMEBoilerand
Pressure Vessel Code,
SectionVIII,Division1.
6 DIMENSIONS
6.1Facings
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6.1.1General. Classes 75, 150, and 300 flanges
are regularly furnished with a0.06 in.raised
face,
whichisincludedintheminimumflange
thickness C.
Classes 400,600, and 900 flanges are regularly furnished
with0.25in.raised
face, whichis additional tothe
minimumflange thickness C. Itisrecommendedthat
theClass 75 flangesbeusedonlywith
a 0.06 in.
raised face or flatface.
Dimensions for ring-joint facing are given in Table
3 for Series A flanges.Any other facing thanthe
above, when required for any class, shall be furnished
as follows.
6.1.1.1 In the case of the 0.25 in. raised face
for Classes 150 and 300, the minimum flange thickness
C shall first be provided and then
the raised face shall
be addedthereto.
5.4Gaskets
6.1.1.2With
ring-joint,theminimumflange
thickness shallfirstbeprovidedandthensufficient
metaladded thereto so that the bottom of the ringjoint groove is inthe same plane as theflange edge
of a full thickness flange.
Ring-joint gasket materials shall conform to ASME
B16.20. Materials for other gaskets are described in
Annex B, whichis part of this Standard. The user is
responsible for selection of gasket materials which will
4
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ASME B16.47-1996
LARGE DIAMETER STEEL FLANGES
6.1.2BlindFlanges.
Blind flangesneednot
be
facedinthe center if,whenthiscenter
part is raised,
its diameter is at least 1 in. smaller than the inside
diameter of the matingflange.Whenthecenterpart
is depressed, its diameter shall not be greater than the
inside diameter of the mating flange. Machining of the
depressed center isnotrequired.
times the maximum radial projection. A radial projection
shall be measured by the difference between an outer
radius and an inner radius encompassing the imperfectionwhere the radii are struck from the centerline of
the bore. Imperfections less than half the depth of the
serrations shallnot be considered cause for rejection.
Protrusions above the serrations arenotpermitted.
6.1,3 Flat FaceFlanges. This Standardpermits
flat face flangesin
all classes, either by providing
flanges having the full thickness or the thickness with
theraised
face removed,withoutreduction
of the
pressure-temperatureratingssubject
to the following
provisions.
6.2 FlangeBoltHoles
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Bolt holes are in multiples of four. Bolt holes shall
be equallyspaced.
6.3 Spot Facing
6.1.3.1 The thickness of a Class 75, 150, or
300 flange from which the raisedface has been removed
shallbeno
less than the applicable C dimension of
Tables 5 , 6 , 10, 11, and12,minus
0.06 in.
All cast and forged steel flanges shall have bearing
surfaces for bolting which shall be parallel to the flange
face within 1 deg.Anyback
facing or spot facing
required to accomplish parallelism shall not reduce the
flange thickness C below the dimensions given in Tables
5 through 15. Any spot facing or back facing shall be
inaccordancewithMSS
SP-9.
6.1.3.2 The thickness of a flange of Class 400
or higher from which the raised face has been removed
shall beno less thanthe applicable C dimension of
Tables 7 to 9 and 13 to 15.
6.1.3.3 A gasket of Group Ia materialinAnnex
B, Fig.B1,isrecommended
for all joints havingtwo
flat facedflangesusing
agasket which has a larger
diameterthanthoseof
the raisedface.
6.4 Welding End Preparation for
NeckFlanges
6.1.3.4 The flange facing shall conformwithpara.
6.1.4 for the full widthof seating ofthegasket.
6.4.2 The contours of the outside of thewelding
neckbeyondtheweldinggrooveareshowninFigs.
1, 2, 5 , and 7.
Welding
6.4.1 Welding ends are shown in Figs.
6.1.4 Flange Facing Finish. The finish of contact
faces of pipe flanges shall be judged by visual comparisonwithRaStandards(seeANSVASMEB46.1)and
not by instruments having stylus tracers and electronic
amplification. The finishesrequiredaregivenbelow.
Other finishes may be furnished by agreement between
user andmanufacturer.
1 through 7.
6.4.3 Straight through bores showninFigs.
1 and
2 are standard unless otherwise specifically ordered to
suitthe special conditions illustratedinFigs. 3, 4, 6,
and 7.
6.4.4 Other weldingendpreparations furnished by
agreement between purchaser and manufacturer do not
invalidate compliancewiththis Standard.
6.1.4.1 Ring-Joint. The side wall
surface
to
63 pin. roughness.
gasket groove shallnotexceed
6.1.4.2 Other Flange Facings. Either a serrated
concentric or serrated spiral finishhaving a resultant
surface finish
from
125
pin. to 250 pin. average
roughness shall be furnished. The cutting tool employed
should have an approximate 0.06 in. or largerradius,
andthereshouldbe
from45groovedin.
through 55
grooveshn.
6.5.1 Stud-bolts threaded at both ends or full length,
or bolts with hexagonal heads may be used. Dimensional
recommendations for bolts, stud-bolts,andnutsare
shownin Table 4. See para. 5.3 for boltingmaterial.
6.1.5FlangeFacingFinishImperfections.Imperfections in the flange facing finish shall not exceed
the dimensions shown in Table 16. Adjacent imperfections shall be separated by a distance of at least four
6.5.2For the method of calculating boltlengths,
see Annex C. The methodofcalculatingboltlength
is established for the convenience of industry to simplify
the assembly of these parts on construction work, but
6.5FlangeBoltingDimensions
5
COPYRIGHT American Society of Mechanical Engineers
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LARGE DIAMETER STEEL FLANGES
ASME 816.47-1996
7.3FlangeThickness
users may select combinations of these bolt lengths to
suit their needs.Hence,Annex
C is not considered
part of this standard.
Thickness. in.
To 1.0
4.12 in.
-0
1 .o-2.0
4 . 1 9 in.
-0
4 . 3 1 in.
-0
4 . 3 8 in.
-0
6.6GasketsforLineFlanges
6.6.1 Ring-joint gasket dimensions shall conform to
ASME B 16.20.
2.0-3.0
Over 3.0
6.6.2 Nonmetallic gasketdimensions for Series A
flanges with raisedface shall conform to ASME B 16.21.
zyxw
6.6.3 Solid flatmetal gaskets shall have contact
widthnot greater than for Group III gaskets.
7.4 Hub DimensionsIncludingWeldingEnds
6.6.4 Spiral wound and double-jacketedcorrugated
metal gasket shall conform to ASMEB16.20.
7.4.1 Nominal outside diameter of weldingend of
weldingneckflanges (dimension A of Figs. 1 and2).
4 . 2 1 in.
-0.06 in.
6.6.5 Nonmetallic gasketdimensions for Series B
flangeswithraised
face shallhave outside diameter
equal to the raised face diameter and inside diameter
equalto the nominal pipe size. If self-centeringring
gaskets are used, the outside diameter shall equal the
bolt circle diameter less one boltholediameter.
7.4.2 Nominal inside diameter of welding ends of
weldingneckflanges
(dimension B inthereferenced
Figures).
Figs. 1 and 2
4 . 1 2 in.
-0.06 in.
Fig. 3
4
7 TOLERANCES*
-0.06 in.
7.1 General
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7.4.3 Bore of backing ring of welding neck flanges
(dimension C of Figs. 3 and 4).
Forthepurposesof
determining conformancewith
this Standard, the convention for fixing significant digits
where limits, maximum or minimum values are specified, shall be the rounding-off method defined in ASTM
Practice E29. This requires that an observed or calculated value shall be rounded to the nearest unit in the
last right-hand digit used for expressing the limit.
The listing of decimal tolerances does notimply a
particular method of measurement.
+0.010 in.
-0
7.4.4 Thickness of Hub. Regardless of tolerances
specified for dimensions A and B, the thickness of hub
at theweldingend shall never be less than 87v2% of
the nominal thickness of the pipe to whichtheflange
is to be attached.
7.2Facings
7.2.1 Outside diameter, 0.06 in. raised face, 0.08 in.
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7.5 OverallLengthThroughHubonWelding
NeckFlanges
7.2.2 Outside diameter, 0.25 in. raised face, 0.04 in.
0.19 in.
7.2.3 Ring-joint groove tolerances are shownin
Table 3.
7.6DrillingandFacing
* Unless otherwise stated, tolerances are equal, plus and minus.
7.6.1Bolt
6
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
circle diameter, 0.06 in.
METER
LARGE
FLANGES
ASME 816.47-1996
zy
7.6.2 Center-to-center of adjacent bolt holes, 0.03 in.
7.6.3 Eccentricitybetweenboltcirclediameterand
machinedfacingdiameters, 0.06 in.
8 TEST
8.1 Flange Testing
Flanges are not required to be hydrostatically tested.
7
COPYRIGHT American Society of Mechanical Engineers
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zyxw
srqponmlkjihgf
1996
ASME
TABLE1A
Material
Group
1.1
Nominal
Designation
csi
LIST OF MATERIAL SPECIFICATIONS
2-1.1
C-Mn-Si
1.2
2-1.2
Forgings
Castings
Plates
A 105
A 350 Gr. LF2
A 216 Gr. WCB
A 515 Gr.70
A 516 Gr. 70
A 537 CI. 1
C-Mn-Si
2’/2Ni
3’/2N¡
1.3
Applicable ASTM Specifications’
Pressure-Temperature
Rating Table
A 350 Gr. LF3
c-si
A 216 Gr. WCC
A 352 Gr. LCC
A 352 Gr. LC2
A 352 Gr. LC3
A
352
Gr.
LCB
CMn-Si
2’/2Ni
3’/2Ni
1.4
CS¡
CMnSi
2-1.4
1.5
C-’/2Mo
2-1.5
1.7
C-Y~MO
’/2Cr-’/2Mo
Ni-’/2Cr-’/2Mo
3/4Ni-3/‘Cr-1 Mo
2-1.7
1 Cr-v2Mo
1’/‘Cr-’/2Mo
1’/4Cr-’/2Mo-Si
2-1.9
1.10
2k4Cr-1Mo
2-1.10
1.13
5Cr-y2Mo
1.9
2-1.3
A 515 Gr. 65
A 516 Gr. 65
A 203 Gr. A
A 203 Gr. D
A 515 Gr. 60
A 516 Gr. 60
A 350 Gr. LF1 CI. 1
A 182 Gr. F1
A 203 Gr. B
A 203 Gr. E
A 217 Gr. WC1
Gr. LC1
A 204 Gr. A
A 204 Gr. B A 352
A 204 Gr. C
A 182 Gr. F2
A 217 Gr. WC4
A 217 Gr. WC5
A 182 Gr. F12 CI. 2
A 217 Gr. WC6
A 182 Gr. F11 CI. 2
A 182 Gr. F22 CI. 3
A 387 Gr. 11 CI. 2
A 217 Gr. WC9
A 387 Gr. 22 C1.2
A 182 Gr. F5 2-1.13
A 182 Gr. F5a
y‘Ni-1 Mo-3/&r
A 217 Gr. C5
1.14
9Cr-1Mo
2-1-14
A 182 Gr. F9
A 217 Gr. C12
2.1
18Cr-8Ni
2-2.1
A 182 Gr. F304
A 182 Gr. F304H
A 351 Gr. CF3
A 351 Gr. CF8
A 240 Gr. 304
A 240 Gr. 304H
2.2
16Cr-12Ni-2Mo
2-2.2
A 182 Gr. F316
A 182 Gr. F316H
A 351 Gr. CF3M
A 351 Gr. CF8M
A 240 Gr. 316
A 240 Gr. 316H
A 240 Gr. 317
18Cr-13Ni-3Mo
19Cr-1ONi-3Mo
A 351 Gr. CG8M
2.3
18Cr-8Ni
16Cr-12Ni-2Mo
2-2.3
A 182 Gr. F304L
A 182 Gr. F316L
A 240 Gr. 304L
A 240 Gr. 316L
2.4
18Cr-1 ON¡-Ti
2-2.4
A 182 Gr. F321
A 182 Gr. F321H
A 240 Gr. 321
A 240 Gr. 321H
8
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zy
tsrqponmlkjihgfe
zyxwvutsrqp
METER
LARGE
TABLE1ALIST
Material
Group
2.5
Nominal
Designation
OF MATERIAL SPECIFICATIONS (CONT'D)
Applicable ASTM Specifications'
Pressure
Temperature
Rating Table
A 182 Gr. F347
A 182 Gr. F347H
A 182 Gr. F348
A 182 Gr. F348H
2-2.5
18Cr-1ONi-Cb
2.6
2-2.6
351 Gr. CF8C
A 240 Gr. 309s
A 240 Gr. 309H
~~
~
2.8
A 240 Gr. 347 A
A 240 Gr. 347H
A 240 Gr. 348
A 240 Gr. 348H
A 351 Gr. CH8
A 351 Gr. CH20
25Cr-12Ni
23Cr-1 2Ni
2.7
Plates
Castings
Forgings
2-2.7
25Cr-20Ni A 182 Gr. F310
2-2.8
A 182 Gr. F44
20Cr-18Ni-6Mo
A 182 Gr. F51
A 182 Gr. F53
22Cr-5Ni-3Mo-N
25Cr-7Ni4Mo-N
A 351 Gr. CK20
~~
A 240 Gr. 310s
A 240 Gr. 310H
zyx
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A240Gr. S31254 A 351 Gr. CK3MCuN
A240Gr. S31803
A 240 Gr. S32750
NOTE:
(1) ASME Boilerand Pressure Vessel Code, Section
IImaterials, which also meet the requirements
of the listed ASTM specifications,
may also be used.
9
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
7-1996
ASME
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FLANGES
STEEL
TABLE1B
DIAMETER
LARGE
LIST OF BOLTING SPECIFICATIONS
Applicable ASTM Specifications”
Bolting Materials’
High Strength (2)
Spec.-Gr.
A 193-87
A 193-BI6
Notes
*
-,
...
320-L7A
320-L7A
A
A 320-L7B
(6)
A 320-L7C
320-L43
(6) A
(6)
(6)
A 354-BC
354-BD
A
...
540-B21
A
A 540-822
A 540-823
A 540-B24
(6)
...
...
...
...
Low Strength (4)
Intermediate Strength (3)
Spec.-Gr.
A
A
A
A
Spec.-Gr.
Notes
...
...
...
193-85
193-86
193-B6X
193-B7M
...
A 193-B8 Cl.
(7)2
A 193-B8C
CI. (7)2
Cl.(7)
2
193-B8M
A
Cl.(7)2
193-B8T
A
193-B8 Cl. 1
193-B8C Cl.
(5)1
193-B8M
(5)1Cl.
193-B8T Cl. 1
193-B8A A
A 193-88CA
A 193-B8MA
A 193-B8TA
307-B
(7)
A 320-88 Cl. 2
2
A 320-B8C CI.(7)
A 320-B8F
CI.
2
320-B8M
A (7)
2
Cl.
Cl. 2
320-B8T
A
A
A
A
A
(7)
A
A 320-88 CI. 1
A 320-881: Cl.(5)1
320-B8M
A
Cl. 1
A 320-B8T CI. 1
Notes
(5)
(5)
(5)
...
...
(5)
(8)
(5)
zyxwvutsrqp
(7)
...
A 449
(5)
(5)
(9)
A 453-651
(10)453-660 A
(1O)
GENERAL NOTE:
Bolting material shall not be used beyond temperature limits specifiedin the governing code.
NOTES:
(1) Repair welding of bolting material is prohibited.
(2) These bolting materials may be used with all listed materials and gaskets.
(3) These bolting materialsmay be used withall listed materials and
gaskets, provided ithas been
verified that asealed joint can be maintained under rated working
pressure and temperature.
(4) These bolting materialsmay be used with all listed materials butare limited toClass 150 and
Class 300 joints. See para. 5.4.1 for recommended gasket practices.
(5) This austenitic stainless material has been carbide solution treated but not strain hardened.
Use A 194 nuts of corresponding material.
(6) This ferritic material is intended for low temperature service. Use A 194 Gr. 4 or Gr. 7 nuts.
(7) This austenitic stainless material has been carbide solution treatedand strain hardened. Use
A 194 nuts of corresponding material.
(8) This carbon steel fastener shall not be used above 400°F or below -20°F. See also Note (4).
Bolts with drilled or undersized heads shall not be used.
(9) Acceptable nuts for use with quenched and tempered bolts are A 194Gr. 2 and Gr.2H.
Mechanical property requirements for studs shall be the
same as those for bolts.
( I O ) This special alloy is intended for high temperatureservice with austenitic stainless steel.
(1 1) ASMEBoiler and Pressure Vessel
Code, Section Il materials, which also meet the requirements
of the listed ASTM specifications, may also be used.
10
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
ETER
LARGE
zy
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616.47-1996
TABLES 2 PRESSURE-TEMPERATURERATINGS FOR GROUPS 1.1
THROUGH 2.8 MATERIALS
TABLE 2-1.1 RATINGS FOR GROUP 1.1 MATERIALS
Nominal
Designation
c-si
C-Mn-Si
Forgings
I
A 515 Gr. 70 (1)
A 216 Gr. WCB (1)
A 105 (1)
350
AGr.
Plates
Castings
I
LF2 (1)
A 516 Gr. 70 (1)(2)
A537 CI. 1 (3)
NOTES:
(1) Upon prolonged exposure to temperatures above 800°F. the carbide phase of steel may be
converted to graphite. Permissible, but not recommended for prolonged use above 800°F.
(2) Not to be used over 850°F.
(3) Not to be used over 700°F.
WORKING PRESSURES BY CLASSES, psig
Class Temp., "F
-20 to 100
200
400
75
150
300
140
130
115 300
1O0
85 500
285
260
230
200
170
740
675
655
635
600
550
535
535
505
41O
355
805
230
515
140
70
900
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600
650
700
750
800
...
...
140
125
110
95
80
850
900
950
1O00
65
50
35
20
270
170
105
50
70
60
...
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
1350
1315
1270
2220
2025
1970
1900
1795
1010
825
1640
1610
1600
1510
1235
310
155
805
515
310
155
535
345
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ASME E116.47FLANGES
1996
STEEL
DIAMETER
TABLE2-1.2
LARGE
RATINGS FOR GROUP 1.2 MATERIALS
Nominal
Designation
Castings
C-Mn-Si
Plates
Forgings
A 216 Gr. WCC (1)
A 352 Gr. LCC (2)
2’/2Ni
A 350 Gr. LF3
3’/2N¡
A
352 Gr. LC2
A 203 Gr. B (1) A
352 Gr. LC3
A 203 Gr. E (1)
NOTES:
(1) Upon prolonged exposure to temperatures above 800”F, the carbide phase of steel may be
converted to graphite. Permissible, but not recommended for prolonged use above 800°F.
(2) Not to be used over 650°F.
WORKING PRESSURES BY CLASSES, .psiq-I
Class Temp., “F
75
150
300
400
600
-20 to 100
145
130
115
290
260
750
750
730
705
665
1O00
1O00
970
940
885
1500
1500
1455
1410
605
590
570
505
410
805
785
755
670
550
1210
1175
1135
I010
825
270
170
105
50
355
230
140
70
200
300
400
500
600
650
700
750
80
200 1
170
70
140
O0
60
95
125
...
...
...
950
1O00
230
...
...
900
2250
2250
2185
2115
1995
1330
1815
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110
12
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
535
345 51 5
205 310
105 155
1765
1705
1510
1235
805
S T D - A S M E BZb"4i"ENGL
ETER
zyxwvu
m
L99b
0 7 5 7 b 7 00 5 7 9 3 7 8
b2T
m
B;16.47-1 996
LARGE
TABLE 2-1.3 RATINGS FOR GROUP 1.3 MATERIALS
Nominal
Designation
Plates
Castings
Forgings
c-si
A 515 Gr. 65 (1)
A 352 Gr. LC6 (3)
C-Mn-Si
A 516 Gr. 65 (1)(2)
25iNi
A 203 Gr. A (1)
3'/2Ni
A 203 Gr. D (1)
NOTES:
(1) Upon prolonged exposure to temperatures above 800"F, the carbide phase of steel may be
converted to graphite. Permissible, but not recommended for prolongeduse above 800°F.
(2) Not t o be used over 850°F.
(3) Not to be used over 650°F.
WORKING PRESSURES BY CLASSES, psig
Class Temp., "F
75
150
300
-20 to 100
200
300
400
500
130
125
115
1O0
85
265
250
230
200
170
655
640
620
585
600
650
700
750
800
70
60
140
125
110
95
80
535
525
520
47 5
390
65
50
35
20
270
170
105
50
...
...
...
400
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600
900
825
775
1315
1275
1235
1165
2085 1390
875 1970
850 1915
1850
1745
710
695
690
630
520
1065
1045
1035
945
780
1600
1570
1555
1420
1175
355
230
140
70
535
345
205
105
805
515
310
155
L
925
695
zyxwvutsr
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850
900
950
1O00
...
...
...
...
13
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
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zyxwvuts
S T D - A S M E BLb.47-ENGL
47-1996
L77b
m
0759b70 0 5 7 7 2 7 7 5bb
ASME
TABLE 2-1.4
RATINGS FOR GROUP 1.4 MATERIALS
Nominal
Designation
Castings
Forgings
A 515 Gr. 60 (1)
CS¡
G Mn-Si
Plates
A 516 Gr. 60 (1)(2)
A 350 Gr. LF1, CI. 1 (1)
NOTES:
(1) Upon prolonged exposure to temperatures above 800"F, the carbide phase of steel may be
converted to graphite. Permissible, but not recommended for prolongeduse above 800°F.
(2) Not to be used over 850°F.
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WORKING PRESSURES BY CLASSES, psig
Class Temp., "F
75
150
-20 to 100
200
300
400
500
115
105
105
1O0
85
235
215
210
600
650
700
750
800
70
60
140
125
110
95
80
850
900
950
1O00
...
...
...
...
...
...
...
14
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
WO
825
750
730
200 705
170 665
1235
1125
1095
1060
995
1850
1685
1640
1585
1495
610
600
600
590
495
915
895
895
885
740
1370
1345
1345
1325
1110
355
230
140
70
535
345
205
105
805
515
310
155
400
620
560
550
530
500
455
450
450
445
370
65 270
50
35
20
600
300
170
105
50
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S T D * A S M E BLb"47-ENGL L776 m 0 7 5 9 b 7 0 0 5 7 7 3 8 0 2 8 8
METER
LARGE
816.47-1996
TABLE 2-1.5 RATINGS FOR GROUP 1.5 MATERIALS
Nominal
Designation
Forgings
Castings
Plates
C-'/~MO
A 182 Gr. F1 (1)
A 217 Gr. WC1 (1)(2)
A 352 Gr. LC1 (3)
A 204 Gr. A (1)
A 204 Gr. B (1)
NOTES:
(1) Upon prolonged exposure
to temperatures above 875"F, the carbidephase of Carbon-molybdenum steel may be converted to graphite. Permissible, but not recommended for prolonged
use above 875°F.
(2) Use normalized and tempered material only.
(3) Not to be used over 650°F.
zyxwvutsrq
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WORKING PRESSURES BY CLASSES, psisI
Class Temp., "F
75
-20 to 100
200
130
130
300
400
500
85
600
650
700
750
800
850
900
950
1O00
O0
70
60
...
...
...
...
...
...
...
150
300
695
925
680 260 905
230 115 655
870
640 200 1855
170 620
830
265
140 605
125 590
110 570
95
530
80
510
65
50
35
20
485
450
280
165
15
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
400
T"
805
785
755
710
675
600
900
1390
1360
1305
1280
1245
2085
2035
1955
1920
1865
1210
1175
1135
1065
1015
1815
1765
1705
1595
1525
zyxwvu
1
650
600
375
220
97 5
900
560
330
1460
1350
845
49 5
-1996
ASME
zyxwvutsrq
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zyxwv
FLANGES
STEEL
DIAMETER
LARGE
TABLE 2-1.7 RATINGS FOR GROUP 1.7 MATERIALS
Nominal
Designation
Castings
Plates
Forgings
A 204 Gr. C (2)
C-'/2Mo
A 182
1/2Cr-1/2Mo
Gr. F2 (3)
Ni--1/2Cr-'/ZMo
A 217 Gr. WC4 (1)(3)
3/4Ni-3/4Cr-1Mo
A 217 Gr. WC5 (1)
NOTES:
(1) Use normalized and tempered material only.
(2) Not to be used over 850°F.
(3) Not to be used over 1000°F.
WORKING PRESSURES BY CLASSES, psicI
Class Temp.,
"F
7
300
400
75
150
-20 to 100
200
300
400
500
145
130
115
1O0
85
290
260
230
200
170
750 1
750
600
650
700
750
800
850
900
950
1O00
1050
70
60
140
125
110
95
80
65
50
35
20
605
590
570
530
510
485
450
315
...
...
...
665
O00
1O00
965
925
885
600
900
1500
1500
720 1445
695 1385
1330
2250
2250
2165
2080
1995
1210
1175
1135
1065
1015
975
900
630
405
315
1815
1765
1705
1595
1525
1460
1350
945
605
475
805
785
755
710
675
650
z
zyxwvutsrq
...
...
...
...
...
...
160
16
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
600
420
270 200
210
zyxwv
zyxw
m
STD-ASME Blb-47-ENGL399b
LARGE DIAMETER STEEL FLANGES
0 7 5 9 b 7 0 0579382 0 5 0
ASME 816.47-1996
TABLE 2-1.9 RATINGS
FOR GROUP 1.9 MATERIALS
Nominal
Designation
Castings
A 182 Gr. F12 CI. 2
lCr-'/*Mo
m
Plates
Forgings
(1)(2)
1 1/4Cr-1/2Mo
A 217 Gr. WC6 (1)(3)
A 182 Gr. F11 Cl.2 (1)(2)
11/$r-1/2Mo
A 387 Gr. 11 Cl. 2 (2)
NOTES:
(1) Use normalized and tempered material only.
(2) Permissible, but not recommended for prolonged use above 1100°F.
(3) Not to be used over 1100°F.
WORKING PRESSURES BY CLASSES, DsicI
Class Temp., "F
75
150
300
-20 to 100
200
300
400
500
145
130
115
1O0
85
290
260
230
200
170
750
750
720
695
665
600
650
700
750
800
70
60
140
125
110
95
80
850
900
950
1O00
1050
1100
1150
1200
...
...
...
*..
...
...
600
900
1O00
1O00
965
925
885
1500
1500
1445
1385
1330
2250
2250
2165
2080
1995
605
590
570
530
51O
805
785
755
710
675
1210
1175
1135
1065
1015
1815
1765
1705
1595
1525
65
50
35
20
485
450
320
215
145
650
600
425
290
190
975
900
640
430
290
1460
1350
955
650
430
...
95
60
40
130
80
50
190
125
75
290
185
115
zyxw
zyxwvutsrq
...
...
...
...
...
...
...
...
17
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zyxwvuts
zyxw
STD*ASME BLb*'47-ENGL L 9 9 b
LARGE
ASME 816.47-1996
m
0759b70 0577383 T77
TABLE 2-1.10 RATINGS FOR GROUP 1.10 MATERIALS
Nominal
Designation
Forgings
Castings
2v4Cr-lMo
A 182 Gr. F22 Cl. 3 (2)
A 217 Gr. WC9 (1)(3)
Plates
A 387 Gr. 22 Cl. 2 (2)
NOTES:
(1) Use normalized and tempered material only.
(2) Permissible, but not recommended for prolonged use above 1100°F.
(3) Not to be used over 1100°F.
WORKING PRESSURES BY CLASSES, .psi%
.1
Class Temp., "F
75
150
300
400
600
900
-20 to 100
200
300
400
500
145
130
115
1O0
85
290
260
230
200
170
750
750
730
705
665
1O00
1O00
970
940
885
1500
1500
1455
1410
1330
2250
2250
2185
2115
1995
600
650
700
750
800
70
60
...
140
125
110
95
80
605
590
570
530
510
805
785
755
710
675
1210
1175
1135
1065
1015
1815
1765
1705
1595
1525
850
900
950
1O00
1050
...
...
...
...
...
1100
1150
1200
...
...
...
...
...
65
50
35
20
...
...
...
...
zyxwvu
zyxw
zyxwv
18
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
485
450
375
260
175
650
600
505
345
235
975
900
755
520
350
1460
1350
1130
780
525
110
70
40
145
90
55
220
135
80
330
205
125
tsrqponmlkjihgf
METER
LARGE
TABLE 2-1.13 RATINGS
FOR GROUP1.13MATERIALS
Nominal
Designation
5Cr-Y2Mo
Castings
A 182 Gr. F5
A 182 Gr. F5a
Forgings
Plates
A 217 Gr. C5 (1)
NOTE:
(1) Use normalized and tempered material only.
WORKING PRESSURES BY CLASSES, psig
. Class Temp., "F
75
150
300
400
600
-20 to 100
200
300
400
500
145
130
115
290
260
230
200 1
1O00
1500
1490
1430
85
170
750
745
715
705
665
600
650
700
750
800
70
60
140
O0
...
...
125
110
95
80
940
885
900
2250
995 2235
955 2150
2115 1410
1995 1330
605
590
570
530
51O
805 1210 1815
1765
785 1175
1135 1705
755
1585
1055
705
1525
675
485
370
275
200
145
965
645
495 740
550
365
265 400 595
190 290 430
1O0
60
135
80
45 70
zyxwvutsr
...
850
900
950
1O00
1050
...
*..
...
...
...
...
1100
1150
1200
...
...
...
...
65
50
35
20
...
...
zyxwvu
19
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
1450
1015
200
125
105
1110
825
300
185
zyxwvuts
zyxwvutsrq
STD-ASME BLb*q7-ENGL
1996
ASME
FLANGES
STEEL
DIAMETER
LARGE
TABLE 2-1.14 RATINGS FOR GROUP 1.14 MATERIALS
Nominal
Designation
Forgings
Castings
9Cr-1 Mo
A 182 Gr. F9
A 217 Gr. C12 (1)
NOTE:
(1) Use normalized and tempered material only.
Plates
zyxwvu
zyxw
WORKING PRESSURES BY CLASSES, psig
Class Temp., "F
75
-20 to 100
200
300
400
500
600
650
700
750
800
850
900
950
1000
1050
1100
1150
1200
70
145
130
115
1O0
150
750
750
85
605
60
...
...
...
...
...
20 255
...
125
530
95
485
450
...
...
170
115
75 1
50
...
...
20
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
590
80
65
50
...
...
...
900
2250 1500 1
2250 1500 1
2185 1455 970 730
21 15 1410 940 705
1995 1330
O00
O00
885
110
...
...
290
260
600
230
170
140
400
300
805
785
755
710
675
650
600
340
230
150
O0
70
665
1210
1815
1765 1175
1705 1135
1595 1065
1525
570
510
1015
975
200
1460
1350 900
1130 755 505
375
35
zyxwvu
505
345
760
515
225
150 225
340
155
105
METER
zyxwv
LARGE
616.47-1996
ASME
TABLE 2-2.1 RATINGS FOR GROUP 2.1 MATERIALS
Nominal
Designation
18Cr-8Ni
Castings
A 182 Gr. F304 (1)
A 182 Gr. F304H
Plates
Forgings
A 351 Gr. CF3 (2)
A 351 Gr.CF8 (1)
A 240 Gr. 304 (1)
A 240 Gr. 304H
NOTES:
(1) At temperatures over 1000°F. use only when the carbon content is 0.04% or higher.
(2) Not to be used over 800°F.
WORKING PRESSURES BY CLASSES, psi!
. .B
Class Temp., "F
75
150
300
400
600
900
-20 to 100
200
300
400
500
135
115
1O0
95
85
275
230
205
190
170
720
600
540
495
465
960
800
720
660
620
1440
1200
1080
995
930
2160
1800
1620
1490
1395
70
60
140
125
110
95
80
435
430
425
41 5
405
580
-575
565
555
540
875
860
850
830
805
1310
1290
1275
1245
1210
65
50
35
20
395
390
380
320
310
530
520
510
430
410
790
780
765
640
615
1190
1165
1145
965
925
...
255
200
155
115
85
345
265
205
150
115
515
400
310
225
170
770
595
465
340
255
60
50
35
25
80
65
45
35
125
95
70
55
185
145
105
80
600
650
700
7 50
800
...
...
...
zyxwvutsrq
zyxwvu
zyxw
zyxwv
850
900
950
1O00
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
21
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zyxwv
zyxw
S T D - A S M E B L b m q 7 - E N G L L77b M 0757b70 0577387 b 3 2 H
1996
ASME
TABLE 2-2.2 RATINGS FOR GROUP 2.2 MATERIALS
Nominal
Designation
Castings
F316 (1)
A 182 Gr. F316H
16Cr-12Ni-2Mo
IaCr-13Ni-3Mo
19Cr-1ONi-3Mo
Plates
Forgings
A 351 Gr.CF3M (2) A 182 Gr.
A 240 Gr. 316 (1)
(1)
A 240 Gr. 316H A 351 Gr. CFBM
A 240 Gr. 317 (1)
zyxwvu
zyxw
A 351 Gr. CG8M (3)
NOTES:
(1) At temperatures over lOOO"F, use only when the carbon content is 0.04% or higher.
(2) Not to be used over 850°F.
(3) Not to be used over 1000°F.
..
Class Temp., "F
-20 to 100
200
300
400
500
600
650
700
750
ao0
a50
900
950
1O00
1050
WORKING PRESSURES BY CLASSES. osic3
75
150
300
135
115
105
95
a5
275
235
215
195
170
720
620
560
515
480
70
60
140
125
110
95
...
...
...
...
...
...
...
...
ao
65
50
35
20
...
*..
1100
1150
1200
1250
1300
...
...
...
...
...
...
...
...
...
1350
1400
1450
1500
...
...
...
...
...
...
...
...
900
960
a25
745
685
635
1440
1240
1120
1025
955
2160
1860
1680
1540
1435
450
445
430
425
420
600
590
580
570
565
900
890
a70
a55
a45
1355
1330
1305
1280
1265
420
415
385
350
345
555
555
515
465
460
835
830
775
700
685
1255
1245
1160
1050
1030
305
235
Ia5
145
115
405
315
245
195
155
610
475
370
295
235
915
710
555
440
350
95
75
60
40
130
1O0
190
150
115
85
290
225
175
125
zyxw
zyxwvu
22
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
600
ao
55
zyxwvutsr
zyxwvu
S T D - A S M E B1bmq7-ENGL177b
METER
LARGE
m
0 7 5 9 b 7 00 5 7 7 1 8 85 7 7
616.47-1996
TABLE 2-2.3 RATINGS FOR GROUP 2.3 MATERIALS
Nominal
Designation
Plates
Castings
Forgings
18Cr-8Ni
A 182 Gr. F304L (1)
A 240 Gr. 304L (1)
16Cr-12Ni-2Mo
A 182 Gr. F316L
A 240 Gr. 316L
NOTE:
(1) Not to be used over 800°F.
zyxwvu
WORKING PRESSURES BY CLASSES, psig
Class Temp., "F
75
150
-20 to 100
200
115
95
230
195
400
500
80
70
600
650
700
750
800
70
60
850
...
...
...
...
400
145
380
800 600 1200
675 505 1015
910 85
605 455 175
825
550 415 160
765
510
140
360
350
95
80
335
330
65
320
23
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
600
300
900
1800
1520
1360
300
1240
1145
440
720
700
685
110
670
660
1080
1050
1030
1010
985
430
645
965
480
125 470
460
450
345
zyxw
LARGE
zyxwvutsrqpon
ASME 816.47-1996
TABLE 2-2.4 RATINGS
Nominal
Designation
18Cr-1 ON¡-Ti
FOR GROUP 2.4 MATERIALS
Forgings
Plates
Castings
A 182 Gr. F321 (2)
A 182 Gr. F321H (1)
A 240 Gr. 321 (2)
A 240 Gr. 321H (1)
NOTES:
(1) At temperatures over 1000°F, use only if the material is heat treated by heating to a minimum
temperature of 2000°F.
(2) Not to be used over 1000°F.
zyxwvu
zyxwvu
WORKING PRESSURES BY CLASSES, Dsic3
Class Temp., "F
75
150
300
-20 to 100
200
300
400
500
135
120
115
1O0
85
275
245
230
200
170
720
645
595
550
515
600
650
700
750
800
70
60
140
125
110
95
80
600
900
960
860
795
735
685
1440
1290
1190
1105
1030
21 60
1935
1785
1655
1545
485
480
465
460
450
650
635
620
610
600
975
955
930
915
900
1460
1435
1395
1375
1355
...
65
50
35
20
...
'445
440
385
355
315
595
590
515
475
415
895
885
775
715
625
1340
1325
1160
1070
940
...
...
...
...
...
...
270
235
185
140
110
360
315
245
185
145
545
475
370
280
220
81 5
710
555
420
330
85
65
50
40
115
85
70
50
170
130
105
75
255
195
155
115
...
...
...
...
zyxwvutsr
850
900
950
1O00
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
...
...
...
...
...
...
...
...
...
...
...
...
...
...
24
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zyxwvuts
zyxwvu
STDOASME B L b . 4 7 - E N G L L 9 7 b H 0757b70 0577370 127
METER
m
LARGE
ASME B16.47-1996
RATINGS FOR GROUP 2.5 MATERIALS
TABLE 2-2.5
Nominal
Designation
18Cr-lONi-Cb
Forgings
Castings
Plates
A 182 Gr. F347 (2)
A 182 Gr. F347H (1)
A 351 Gr. CF8C (3)
A 240 Gr. 347 (2)
A 240 Gr. 347H (1)
A 240 Gr. 348 (2)
A 240 Gr. 348H (1)
zyxwvutsr
zyxw
zyxwvutsrqpo
A 182 Gr. F348 (2)
A 182 Gr. F348H (1)
NOTES:
(1) For temperatures over 1000°F. use only if the material is heat treated by heating to a minimum
temperature of 2000°F.
(2) Not to be used over 1000°F.
is 0.04% or higher.
(3) At temperatures overlOOO"F, use the material only when the carbon content
WORKING PRESSURES BY CLASSES, psig
I
___r___
Class Temp., "F
75
-20 to 100
200
300
400
500
135
125
115
1O0
85
600
650
700
750
800
70
60
...
...
.
I
.
850
900
950
1O00
1050
...
...
1100
1150
1200
1250
1300
...
1350
1400
1450
1500
...
I
900
960
880
820
765
720
1440
1320
1230
1145
1080
2160
1980
1845
1720
1620
515
505
495
490
485
685
670
660
655
650
1025
1010
990
985
976
1540
1510
1485
1475
1460
65
50
35
20
485
450
385
365
360
645
600
51 5
485
480
970
900
775
725
720
1455
1350
1160
1O90
1080
...
...
...
325
275
170
125
95
430
365
230
165
125
645
550
345
245
185
'965
825
515
370
280
70
55
40
35
90
75
55
45
135
110
80
70
205
165
125
105
300
400
275
255
230
200
170
720
660
615
575
540
140
125
110
95
80
zyxwvut
...
*
600
150
.
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
25
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zyxwvutsrqpon
ASME 816.47-1996
FLANGES
STEEL
TABLE 2-2.6 RATINGS
Nominal
Designation
DIAMETER
LARGE
FOR GROUP 2.6 MATERIALS
Castings
Plates
Forgings
A 351 Gr. CH8 (1)
A 351 Gr. CH20 (1)(4)
25Cr-12Ni
23Cr-12Ni
A 240 Gr. 3095 (1)(2)(3)
A 240 Gr. 309H
NOTES:
(1) At temperatures over IOOO"F, use only when the carbon content is 0.04% or higher.
(2) For temperatures above IOOO'F, use only if the material is heat treated by heating it to a
temperature of at least 1900°F and quenching in water or rapidly cooling by other means.
for service temperatures 105OOF and above only whenassurance
(3) This material should be used
is provided that grainsize is not finer than ASTM 6.
(4) For service temperaturesabove 850°F, it is recommended that killedsteel containing not less
than 0.10% residual silicon be used.
zyxwv
zyxwvuts
zyxwvut
WORKING PRESSURES BY CLASSES, psisI
r
"
-
Class Temp., 'F
75
150
-20 to 100
200
300
400
500
130
115
110
1O0
85
260
230
220
200
170
670
605
140
125
110
95
80
65
50
35
20
600
650
700
750
800
850
900
950
1O00
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
70
60
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
600
900
805
760
710
670
1345
1210
1140
1065
I010
2015
1815
1705
1600
1510
480
635
465 620
455 610
445 595
435 580
955
930
910
895
870
1435
1395
1370
1340
1305
425
565
415
555
385 515
335 450
290
390
850
830
775
670
585
1275
1245
1160
1010
875
225 300
170
230
130
175
1O0
135
80
105
445
345
260
200
160
670
515
390
300
235
115
90
60
50
175
135
95
70
895
535
570
505
zyxwvu
zyxwvu
60
45
30 40
25 30
26
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
400
300
80
60
srqponmlkjihgfe
zyxwvuts
ETER
LARGE
TABLE 2-2.7 RATINGS FORGROUP 2.7 MATERIALS
Nominal
Designation
25Cr-20Ni
Forgings
Castings
Plates
A 182 Gr. F310 (1)(3)
A 351 Gr. CK20 (1)
A 240 Gr. 310s (1)(2)(3)
A 240 Gr. 310H
zyxwvutsrqp
~~~
NOTES:
(1) At temperatures over 1000°F. use only when the carbon content is 0.04% or higher.
(2) For temperatures above 1000°F.use only if the material is heat treated by heating it to a
temperature of at least 1900°F and quenching in water or rapidly cooling by other means.
(3) Service temperatures of 1050°F and above should be used only when assurance is provided
that grain size is not finer than ASTM 6.
WORKING PRESSURES BY CLASSES, m i a
Class Temp., "F
75
150
300
400
600
900
-20 to 100
200
300
400
500
130
115
110
1O0
85
260
235
220
200
170
670
605
570
535
505
895
810
760
715
675
1345
1215
1140
1070
1015
201 5
1820
1705
1605
1520
600
650
700
750
800
70
60
140
125
110
95
80
480
470
455
450
435
640
625
610
600
580
960
935
910
900
875
1440
1405
1370
1345
1310
65
50
35
20
425
420
385
345
335
575
555
515
460
450
855
a35
775
685
670
1280
1255
1160
1030
1010
260
190
135
105
75
345
250
185
135
1O0
520
375
275
205
150
780
565
410
310
225
60
45
35
25
80
60
45
35
115
90
65
50
175
135
1O0
75
...
...
...
...
...
zyxwvutsr
850
900
950
1O00
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
zyxwvu
27
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
STD.ASME
7-1996
zyxwvutsr
zyxwv
BLb.47-ENGL
0757b70 0577373 73b
L77b
m
ASME
TABLE 2-2.8 RATINGS
FOR GROUP 2.8 MATERIALS
Nominal
Designation
20Cr-18Ni-6Mo
250-7Ni4Mo-N
Castings
A 351 Gr. CK3MCuN
A 182 Gr. F44
Plates
Forgings
A 240 Gr. S31254
A 182 Gr. F51 (1) 22Cr-5Ni-3Mo-N
A240 Gr. S31803 (1)
A 182 Gr. F53 (1)
A 240 Gr. S32750 (1)
NOTE:
(1) This steel may become brittle after service at moderately elevated temperatures. Not to be
used over 600°F.
zyx
zyxwvut
WORKING PRESSURES BY CLASSES, psig
Class Temp., 'F
75
150
-20 to 100
260
400
1O0
400
600
750 290
130 720
200
145
O00
960
2250
2160 1440
1995 1330
1230 820 1845
615
1730 1150
170 85 500
200
770
600
650
700
750
140
...
70
725
...
530
28
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
900
300
95
1500 1
575
540
1115
1100
1085
110
1065
740 1670
555
735 1650
550 125
'1625
710 1595
60
885
665
230
115
3
zyxwvuts
~
S T D - A S M E BLb.47-ENGL
L99b
m
zyxwvutsrqponmlkjihgfedcbaZYXWVUT
0 7 5 9 b 7 0 0579394 8 7 2
LARGE DIAMETER STEEL FLANGES
ASME B16.47-1996
23 deg.
TABLE 3 DIMENSIONS OF RING-JOINT FACINGSzØ3
I
1 1 1
300
900
26
28
30
32
...
.. .
.. .
.. .
36
...
...
...
...
...
...
34
Dimensions
Groove
Pitch
Diam.
DeDth
Nominal PipeSize
34
zyxw
zyxwvuts
I
.. .
. ..
I Number
0.781
29.500
0.500
R93
0.781
31.500
0.500
R94
33.750
0.781
0.500
R95
36.000
0.906
0.562
R96
38.000
0.906
0.562
R97
40.250
0.906
0.562
R98
P
Width
Radius
at
Bottom
Diameter
of
Raised
Portion
F
R
K
0.06
0.06
0.06
0.06
0.06
0.06
0.09
0.09
0.09
0.09
0.09
0.09
31.88
33.88
36.12
38.75
40.75
43.00
32.75
35.00
37.25
39.50
42.00
44.25
E
1.188
0.688
29.500
R100 26
1.312
0.688
31.500
R101 28
30
1.312
0.688
33.750
R102
1.312
0.688
36.000
R103 32
341.438
0.812
38.000
R104
36
1.438
0.812
40.250
R105
zyxw
Tolerances
E (depth)
+0.016
-0
F (width)
P (pitch diameter)
R (radius at bottom)
23 deg. (angle)
k0.008
20.005
Max.
k’/2 deg.
zyxwvutsrq
GENERAL NOTES:
(a) Dimensions are in inches.
(b) Ring-joint gaskets are not contemplated for NPS 38 and larger flanges.
NOTES:
(1) Height of raised portion is equal to the depth of groove dimension E, but is not subjected to
the tolerances forE. Full face contour may be used.
(2) For facing requirements for flanges, see para. 6.1.1.
(3) See para. 4.1.7 for marking requirements.
29
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
srqponmlkjihgf
7-1996
ASME
TABLE 4 FLANGE BOLTING DIMENSIONAL RECOMMENDATIONS
Carbon Steel Other Materials
ANSI 818.2.1
Stud-bolts
Bolts smaller than3/4 in.
Bolts equalto or larger than
Y4in.
B18.2.1, square or hex
Nuts smaller than Y4 in.
Y4 in.
zyxw
zyxwvut
zyxwv
zyxw
ANSI B18.2.1, heavy hex
head
ANSI 818.2.1, square or
heavy hex head
ANSI 818.2.1, heavy hex ANSI
head head
ASMUANSI 618.2.2, heavy hex
to or larger than
heavy hex
or Nuts
ASME/ANSI
equal
818.2.2, heavy ASMWANSI B18.2.2, hex
hex
2A. coarse ANSI
Male threads
ANSI B1.l, CI.
series series
Female threads
ANSI B1.l, Cl. 28, coarse
series series
30
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
B1.1., Cl. 2A; coarse
up through 1 in.
bolts; 8 thread series for
larger bolts
ANSI 81.1, CI. 28; coarse
up through 1 in.
bolts, 8 thread series for
larger bolts
zy
xwvutsrqponmlk
zyx
zyxwvutsr
zyxwvutsrq
zyxwvutsrq
METER
FLANGES
LARGE
ASME 016.47-1996
WELDING ENDS
(Welding Neck Flanges, No Backing Rings)
f
I
Slope 1:3 (max.)
Slope 1:3 (max.)
37-112 deg.
f: 2-1/2 deg.
.
A
A
0.1 2 min. radius
i
+c
zyxwvutsr
t
\
0.06 2 0.03
37-1
0.06 f 0.03
A
X
X
A
f
FIG. 1 BEVELFORWALLTHICKNESSES r FROM
FIG. 2
0.19 in. TO 0.88 in., INCLUSIVE"3
BEVEL FOR WALLTHICKNESSES t
GREATER THAN 0.88 in."3
A = nominal outside diameter of pipe, in.
6 = nominal inside diameter of pipe, in.
r = nominal wall thickness of pipe, in.
NOTES:
zyxwvutsrqpo
(1 See paras. 6.4 and 7.4 for details and tolerances.
(2) See Figs. 3 and 4 for additional details of welding ends.
(3) When the thickness of the hub at the
bevel is greater thanthat of the pipe to which the flange
is joined, andthe additional thickness
is provided on the outside diameter, a taper weld having anot
slope
exceeding 1 to 3 may be employed or.alternatively, the greater
a t the same maximum slopeor less, from apoint on the welding bevel equal
to the 0.0. of the
outside diameter may be tapered,
mating pipe. Similarly,when the greater thicknessis provided on theinside of the flange,it shall be taper bored from the welding
end at a slope not exceeding 1 t o 3.
When flanges covered
by thisStandard are intendedfor services with light wall and higher strength pipe,
the thickness of the
hub
atthe bevel may be greater
than that
of the pipe t o which the flange is joined. Under these
conditions a single taper
hub may be provided andthe outside diameterof the hub at the base [dimensionX) may also be modified.
additional thickness
The additional thicknessmay be providedon either insideor outside or partially on each side, but the total
shall not exceed one-half times the nominal wall thickness of intended mating pipe. See Figs. 5, 6,and 7.
31
COPYRIGHT American Society of Mechanical Engineers
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LARGE
zyxwvutsrqpon
ASME 816.47-1996
STEEL FLANGES
WELDING ENDS
(Welding Neck FlangesWith Backing Rings)
zyxwvutsrqp
FIG. 3 INSIDE CONTOURFORUSE
RING"3
BACKING
RING"3
RECTANGULAR
BACKING
WITH
FIG. 4
INSIDE CONTOURFOR USE WITH TAPER
zyxwvutsr
zyxwvu
zyxwv
A = nominal outside diameter of welding end, in.
B = nominal inside diameter of pipe
=A
2t. in.
C =A
0.031 - 1.75t
0.010 in.
t = nominal wall thicknessof pipe, in.
0.031 = minus tolerance on O.D. of pipe, in.
-
-
1.75t = 8 7 h % of nominal wall multipliedby t w o t oconvert into termsof diameter
0.010 = plus tolerance on diameter C, in. (see para. 7.4.3.)
NOTES:
(1) 0.5 in. depth based on use of 0.75 in. wide backing ring.
(21 See paras. 6.4 and 7.4 for details and tolerances.
(3)See Figs. 1 and 2 for welding end details of welding neck flanges.
32
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
METER
zyxwv
LARGE
616.47-1996
WELDING ENDS
(Welding Neck Flanges)
18 deg. max. (1~31
\
t
t0
18 deg. max. (1:3\
zyxwvutsrqpon
zyx
FIG. 7
NOTES:
zy
zyxwvutsr
ADDITIONAL THICKNESS FOR
WELDING TO HIGHER STRENGTH PIPE
BEVELFORCOMBINED
(1) Neither rl,
rz, nor their sum Itl it,) shall exceed 0.5t.
(2) When the minimum specified yield strengths of the sections
to be joined are unequal, the value
of r, shall at least equal
t times the
ratio of minimum specified yield strengthof the pipe to yield strength of the flange.
(3) Welding shall be in accordance with the applicable code.
33
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zyxwvutsrqpon
ASME B16.47-1996
LARGE DIAMETER STEEL FLANGES
zyxwvutsrq
zyxwv
zyxwvutsrqp
zyxwvutsrqp
TABLE 5 DIMENSIONS OF CLASS 150 SERIES A FLANGES'&
1
2
Nominal
Pipe
Size
26
28
I
3
Thickness of
Flange, Min?
O. D.
of
Flange
WNF
O
c
34.25
5
4
I
2.69
Diam.
Length
of
Through
Hub Blind
Hubs
Y
C
I
2.69
I
2.81
36.50
4.75
7
8
Diams
Top
Raised
Face
Diam.
A
R
6
X
I
26.62
I
26.00
I
29.50
Hub
31.75
I
24
I
I
I
I
I
40
3.56
50.75
42
3.81
53.00
3.81
48.75
I
6.19 3.56
I
3.44
38
3.44
I
I
6.19
I
39.00
I
57.25
I
4.06
I
4.06
I
7.31
I
4.25 59.50
I
4.38 61.75
I
I
I
I
I
I
lV4
I
28 172
38.50
40.50
1.6238.00 1%
1.62
I
0.50
1'/2
I
I
42.00 43.00 6.75
1.62
36 1'/2
49.50
0.50
47.00
1.62
40 11/51.75
,
0.50
1.62
1
0.50
1.62
0.5015;
~~
~~
I
I
I
I
I
1'12
I
53.75
I
I
40
I
44
I
I
I
1%
I
I
58.25 55.5044 50.00 1.88
51.25
l
57.50 52.00
44
4.561.88
60.5053.25 8.25
I
I
I
l
174
I
1.88 44 13/4
62.75
56
9.00 4.88 4.88 68.75
62.00 56.00 57.38
1.88 48 1%
65.00
60
5.19 5.199.44
73.00
0.50
0.50
zyxw
~~~~
1.88
0.50
1T4
59.50
58.00 59.38 9.25 67.25
5.06 64.0048
0.50
l
8.50 4.7555.25
4.75 66.25
54.00
71.00
0.50
zyxwvu
56.00
I
32
I
0.50
44.25
0.50
4.56 64.00
5.06
0.44
36.00 32.00 32.75 5.6
36 1'/~
47.25
45.25
I
0.44
54
58
0.38
1.62
51.00
I
I
40.00 41.00 6.44 3.56
I 47.12 I 46.00 I
I
8.00 4.38
I
1'14
I
42.25
49.00
I
I
rl
1.62
38.00
7.56 4.25
53.50
48.00
49.12
l
50
52
I
I
45.00 7.00
44.00
~~~~
48
32
36.00
36.75
40.25
42.75
32
I
4.00 4.00 55.25
44
46
1.62
34.00 34.75 5.88 3.25
3.56
46.00
1.38
33.75 30.00 30.75 28
5.38 36.001.38
3.25 43.75
I
Fillet
Radius
Min.
1.38 28 lV4
34.00 31.50
0.44 28.00 28.62
3.19 41.75 32
36
13
Diam.
Diam.
of
of Bolt
Hole Holes
Bolt
NO. Of
Bolt
4.94 2.81
2.94 2.94 38.75 30
34
12
Drilling
Diam.
of Bolt
Circle
I
11
10
9
174
~~
0.50
1.88 52 13/4
69.25 66.00
0.50 60.00 61.38
(Notes follow Table 15)
34
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
METER
zyxwv
LARGE
816.47-1996
ASME
I
TABLE 6 DIMENSIONS OF CLASS 300 SERIES A FLANGESlb
56
6.06 6.0610.25
67.25
58
6.25
6.2510.50
69.25
6.44
6.4410.75
60
71.25
zyxwvutsrq
zy
zy
63.0057.62 28
59.75 56.00
2.38
2'/4
0.50
65.0059.62 32
62.00 58.00
2.38
25h
0.50
2'/4
0.50
67.00
32 60.002.38
64.00
61.62
{Notes follow Table 15)
35
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zyxwvutsrqp
zyxwvutsrqp
LARGE DIAMETER STEEL FLANGES
ASME 816.47-1996
zyxwvutsrq
zyxwv
TABLE 7 DIMENSIONS OF CLASS 400 SERIES A FLANGES’&
1
3
2
I
I
4
6
5
I
I
7
1
9
8
I
10
12
I
I
11
13
1
48
59.50
6.00
6.00
51.50
48.00
55.25
49.88
28
10.12
2.38
2‘/4
0.56
50
61.75
6.19
6.25
53.62
50.00
57.50
52.00
32
10.56
2.38
274
0.56
52
63.75
54
67.00
56
69.00
60
74.25
6.44
6.38
6.69
56.12
6.94
7.00
71.00
7.31
7.44
2.38
32
0.56
2v4 59.50
2.62
28
272
0.56
54.00
11.38
6.75
57.88
62.25
6.88
56.00
58.25
11.75
64.25
60.12
2.62
32
2’/2
0.56
58
58.00
60.25
62.12
12.06
66.25
7.12
2.62
32
2l/2
0.56
12.56
60.00
62.38
64.38
2.88
32
2%4
0.56
69.00
55.62
(Notes follow Table 15)
36
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
52.00
zyx
LARGE DIAMETER STEEL FLANGES
ASME 816.47-1996
zyxwvuts
zyxwvu
TABLE 8 DIMENSIONS OF CLASS 600 SERIES A FLANGES'*
0.56
2'/2
2.6232
52.50
48.25
44.00
46.50
11.38
7.00
6.81
57.25
44
59.50 46
7.06
7.31
11.81
48.62
46.00
50.25
54.75
32
2.62
25/2
0.56
62.75 48
7.44
7.69
12.44
50.75
48.00
52.50
57.50
32
2.88
2y4
0.56
65.75 50
7.75
8.00
12.94
52.88
50.00
54.50
60.00
28
3.12
3
0.56
67.75 52
8.00
8.25
13.25
54.88
52.00
56.50
62.00
32
3.12
3
0.56
70.00 54
8.25
8.56
13.75
57.00
54.00
58.75
64.25
32
3.12
3
0.56
73.00 56
8.56
8.88
14.25
59.12
56.00
60.75
66.75
32
3.38
3'/4
0.62
75.00 58
8.75
9.12
14.56
61.12
58.00
63.00
68.75
32
3.38
3'/4
0.62
78.50 60
9.19
9.56
15.31
63.38
60.00
65.25
71.75
28
3.62
3l/2
0.69
(Notes follow Table 15)
37
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zyxwvutsrqp
ASME 816.47-1996
LARGE DIAMETER STEEL FLANGES
TABLE 9 DIMENSIONS OF CLASS 900 SERIES A FLANGES14
1
zy
zyxwvutsrqp
zyxw
3
O. D.
of
Flange
Nominal
Pipe
Sire
O
11.25
6.31
5.50
42.75
26
28
46.00
2
4
Thickness of
Flange, Min.'
c
c
7.50
38
I
59.50
7.75
42
61.50
8.12
44
64.88
8.44
46
8.88
10.38
...
...
56
58
...
...
60
...
...
I
...
...
...
...
...
...
...
...
I
9.19
...
...
...
I
NO. Of
Bolt
30.50
29.50
37.50
20
28.00
32.75
31.50
11.75
40.25
6.75
30.00
35.00
33.75
42.75
32.00
37.25
13.00
41.88
14.25
36.00
8.44
Diam.
Diam.
of Bolt
of
Hole Holes
Bolt
I
7.62
50.75
40.25
38.00
14.62
42.00
48.62
44.00
I
I
I
2
'
1
4
11
rl
I
0.44
3.12
20
3
0.50
3.12
20
3
0.50
3.38
20
3'4
0.50
45.50
36.00
3.62
20
372
48.25
0.56
38.00
3.62
20
3l/2
0.56
3.62
I
46.31
2.88
12
I
0.75
50.75
20
3'/2
I
43.25
I
45.75
40.00
52.75
44.38
24
14.31
3.62
3'4
0.81
9.12
54.75
47.75
3.62
24
3l/2
0.81
57.62
24
50.00
3.88
374
0.88
zy
zyxwvutsr
68.25
48
Fillet
Radius
Min,
26.00
I
15.38
Drilling
R
8.81
9.56
13
A
34.00
I
'
10
Diam.
of Bolt
Circle
39.62
55.00
42.25
8.50
13.88
I
9
8
Hub
Raised
Diam?
Face
Hub
Diam.
TOP Blind
48.50
6.50
13.75
57.50
I
40
54
X
6.75
57.50
52
Y
5.88
12.25
8.06
34
50
Diam.
of
HubB
6.25
51.75
I
Length
Through
7
5.62
7.18
36
6
WNF
30
32
5
...
...
...
I
...
...
...
...
50.88
16.18
46.00
10.06
70.25
52.88
16.50
60.50
52.50
4.12
24
4
0.88
54.50
48.00
62.50
4.12
244
0.94
...
...
...
...
...
...
...
...
...
.... . .
...
...
I
...
...
...
...
...
I
...
...
...
I
...
...
...
...
...
...
. .. . .
...
I
I
I
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
zy
(Notes follow Table 15)
38
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
METER
zyx
LARGE
ASME 816.47-1996
zyxwvutsrq
zyxwv
TABLE 10 DIMENSIONS OF CLASS 75 SERIES BFLANGES’“
2
1
Nominal
Pipe
Size
3
4
Thickness of
Flange, Min.’
5
6
7
8
Diam.
of
Hub8
Diam?
Top
Raised
Face
Diam.
X
A
R
O. D.
of
Flange
WNF
Blind
Length
Through
Hub
O
C
C
Y
9
Hub
10
12
11
Fillet
Radius
Min.
Drilling
Diam.
of Bolt
NO. Of
Bolt
13
Diam.
Diam.
of
of Bolt
Bolt Circle
Hole Holes
r1
zyxwvutsrqp
I
58
60
64.00
2.06
2.50
5.44
66.00
2.19
2.62
5.69
59.12
58.06
60.50
60.06
61.12
62.50
61.88
44
1.12
1
0.44
44
63.88
1.12
1
0.44
(Notes follow Table 15)
39
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zyxwvutsrqpo
ASME 816.47-1996
FLANGES
STEEL
DIAMETER
LARGE
TABLE 11 DIMENSIONS OF CLASS 150 SERIES B FLANGESlb
zyx
(Notes follow Table 15)
40
COPYRIGHT American Society of Mechanical Engineers
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zy
zyxwvut
zyxwv
zy
S T D * A S M E BLb.47-ENGL 177b
METER
LARGE
m
0757b70 057720b 314m
616.47-1996
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TABLE 12 DIMENSIONS OF CLASS 300 SERIES B FLANGES’&
1
Nominal
Pipe
Size
2
4
Thickness of
Flange, Min?
5
6
7
8
Diam.
of
Hub8
Diam?
Top
Raised
Face
Diam.
X
A
R
O. D.
of
Flange
WNF
Blind
Length
Through
Hub
O
C
C
Y
52
63.50
54
65.88
56
60
3
73.94
6.18
69.50
6.06
71.94
5.94
Hub
.
Diam.
of Bolt
Circle
10
11
12
Drilling
N O . Of
Bolt
Holes
Diam.
of Bolt
Hole
Diam.
of
Bolt
13
Fillet
Radius
Min.
r1
zyxwvutsrq
9.56
6.06
9
54.44
5.68
10.56
10.81
58
60.94
6.38
10.69
6.56
5.62
54.31
56.50
56.31
58.81
58.31
65.00
41
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
56.25
59.75
52.31
62.12
9.44
48
2.00
178
0.62
48
58.25
5.88
2.00
5.38
l’/a
0.62
36
2.38
65.00
60.50
2
l/4
0.69
2k4
0.69
67.44
40
62.75
2.38
69.44
60.31
40
62.94
2.38
0.69
2’/4
(Notes follow Table 75)
zyxwvutsrqponm
7-1996
ASME
FLANGES
STEEL
LARGE DIAMETER
TABLE 13 DIMENSIONS OF CLASS 400 SERIES B FLANGES'".''
56
...
58
...
60
...
zyxwv
zyxwvut
zy
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
(Notes follow Table 15)
42
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zyxwvutsrqponm
LARGE DIAMETER
ASME
STEEL FLANGES
B16.47-1996
zyxwv
TABLE 14 DIMENSIONS OF CLASS 600 SERIES B
1
54
56
58
60
3
4
5
6
Length
Through
Hub
of
Hube
Y
X
7
8
9
10
12
11
13
zyxwvutsrqpo
Nominal
Pipe
Size
52
2
Thickness of
O. D.
Flange, Min?
of
Blind
~l~~~~ WNF
O
...
...
...
...
...
C
C
Hub Diam.
Raised
Diam!
Face
Diam.
A
R
Drilling
Diam.
of Bolt
Circle
No. of
Bolt
Holes
Diam.
of Bolt
Hole
Diam.
of
Bolt
Fillet
Radius
Min.
r1
zyxwvut
zyxw
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
. ....
.
...
...
...
...
...
...
...
...
...
...
...
......
(Notes follow Table 15)
43
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
47-1996
zyxwvut
zyxwvutsrq
ASME
FLANGES
STEEL
DIAMETER
LARGE
zyxwvutsrq
zyxwv
1 I zyxwvu
1 1
TABLE 15 DIMENSIONS OF CLASS 900 SERIES B FLANGES'&,
1
Nominal
Pipe
Sire
26
3
2
O. D.
of
Flange
40.25
43.50 28
46.50 30
48.75
34
51.75
53.00
38
40
44
46
...
48
...
50
52
54
7
6
9
8
10
Diam.
of Bolt
Bolt
R HolesCircle
X
A
29.25
26.00
30.00 20
35.50
31.38
28.00
32.25 20
38.25
33.50
30.00
34.50
40.75
NO.
...
...
...
58
...
...
...
60
...
...
Of
Diam.
of Bolt
Hole
f
3.1 2
0.50
3.38
I
...
...
3.12
I
...
...
...
...
...
...
...
...
...
...
...
...
13
3.12
...
56
I
2.88
40.00 47.25
40.50
36.00
...
...
12
2.62
45.50
39.00
34.00
37.88
36
11
Drilling
'
Face
Diam.
43.00
36.50
32.00
35.75
...
...
...
...
42
5
Diam.
Raised Hub
of
Diam?
Hubs
Top
O
32
4
'O
I
I
...
...
...
...
...
...
I
I
I
...
*..
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
I
...
...
...
...
...
...
...
...
...
...
l
I
...
...
...
...
I
I
...
...
...
...
...
...
*~
*zy
...
I
...
I
...
...
...
...
...
(Notes follow on next page)
44
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zy
yxwvutsrqponm
zyxwvutsrqpo
zyxwvutsrq
TEEL
LARGE DI.AMETER
ASME B116.47-1996
FLANGES
Notes to Tables 5-15
GENERAL NOTE: Dimensions are in inches.
NOTES:
(1) For tolerances, see Section 7.
(2) For facings, see para. 6.1,
(3) For flange bolt holes, see para. 6.2.
(4) For spot facing, see para. 6.3.
(5) The bore is to be specified by the purchaser. Tolerances in para. 7.4.2 apply.
(6) Blind flanges may be made with or without hubsat the manufacturer's option.
(7) When theseflanges are required with flat
face, either thefull thickness or thicknesswith raised face removed may be furnished.
Users are reminded that removing the raised face will make the length through hub nonstandard.
(8) This dimension is for the large end of hub, which may be straight or tapered.
(9) For welding and bevel, see para. 6.4.
(10) Dimensions for Classes 400, 600, and 900 NPS 38 and larger forSeries B flanges are the same as for the Series A flanges.
45
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ASME 616.47-1996
DIAMETER
LARGE
STEEL FLANGES
TABLE 16 PERMISSIBLE IMPERFECTIONS IN FLANGE FACING FINISH
(See Para. 6.1.5)
zyxwv
Nominal Pipe Size
Maximum Radial Projection
of Imperfections Which Are
No Deeper Than the Bottom
of the Serration, in.
Maximum Depth and Radial
Projection of Imperfections
Which Are Deeper Than the
Bottom of the Serration, in.
26-36
3848
50-60
0.56
0.62
0.25
0.28
0.31
46
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
0.50
zyxwvuts
zyxwvutsrqp
ANNEX A
METHODS FOR ESTABLISHING PRESSURE-TEMPERATURE RATINGS
(This Annex is not part of ASME 816.47-1996 and is included for information only.)
A l GENERAL
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A2 RATINGS
A l .1 Introduction
Pressure-temperature ratings in this Standard have
been determined by the procedures in this Annex.
The primary consideration in establishing ratings is
adequate wall thickness to sustain stresses due to pressure and other loadings. Other considerations affecting
or limiting the ratings include:
(a) stresses inflanges resulting from bolt-up necessary tomaintain gasket seal;
(b) distortion of flanges due to loadings transmitted
through the pipeline; and
(c) limitations applying primarily to valvesbutimposed also on flanges in order to maintain compatible
ratings.
A2.1RatingEquation
temperatures
Ratings given in Tables 2, psigat
expressed in degrees Fahrenheit, for all
pressure classes, are established by Eq.
where
P, = rated working pressure, psig, for the specified
materialat temperature T
P, = pressure rating class index expressed in psi'
(e.g. P, = 300 psi for Class 300)
S1 = selected stress, psi, for the specified material at
temperature T (see paras. A2.2, A2.3, and A2.4)
P, = ceiling pressure, psig, as specified in A3 at
temperature T
zyxwvuts
zyx
zy
A l .2 Material Groups
Material groupsin Table 1 are based on identical
or closely matched allowable stress and yield strength
values.Wherethey are not identical, the lower value
hasbeen applied.
Note that material groups are not numbered consecutively. Some groups are intended for use only in valves.
See ASME B16.34.
A l .3 Material Properties
The allowable stress and yield strength valuesused
to calculate the pressure-temperature ratings were taken
from the ASME Boiler and Pressure Vessel Code,
Section II, Part D. In addition, data has been provided
directly by the ASME Boiler and Pressure Vessel
Subcommittee on Materials.
COPYRIGHT American Society of Mechanical Engineers
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A2.2RatingsforGroup1Materials,
andHigher
Class 300
The selected stress SIfore each material group among
Group 1 materials in Table 1A is determined as follows.
(a) At temperatures below the creep range, S1 shall
be lowest of the following values:
(I) 60% of specifiedminimumyield strength at
100°F;
(2) 60% of the yield strength at temperature T;
(3) 1.25 times the dowable stress at temperature
T as listed for ASME BPV Code, Section I, or, if not
listed for Section I, as listed for Section VI11 Division 1.
(b) At temperatures in the creep range (defined as
those above 700°F for Group 1 materials), SI shall be
the lowest of the following values:
( I ) 60% of the yield strength at temperature T;
(2) the allowable stress at temperature T as listed
zyxwv
'This definition of P, does not apply to Class 75 and Class 150.
See para. A2.4.
zyxwvutsrqpo
zyxwvutsrqpon
zyxwvutsr
zyxwvut
zyxwvutsrq
~~~
m
0757b70 0579233 554
ASME B16.47-1996
LARGE DIAMETER STEEL FLANGES
for ASME BPV Code, Section I, or, ifnotlisted for
Section I, as listed for Section VIII, Division 1.
(c) In nocase shall thevalue of SI increase with
increasingtemperature.
(d) Yield strength values for determination of values
of SI shall be obtained from ASME BPV Code, Section
II, Part D.
(e) Wheremorethan oneallowable stress valueis
listed for a material at any temperature, the lower value
shall beused. If lower allowable stress values do not
appear, and it isnotedin
the allowable stress table
thatthe allowable stress valuesexceedtwo-thirds
of
theyieldstrength
at temperature, thenthe allowable
stress values shall be determined as two-thirds of the
tabulatedyield strength at temperature.
If3 Allowable stress values listed for the ASME
BPV Code, Section III, Class2 and Class 3 may be
used only if the material is not listed for either Section
I or SectionVIII,Division
1.
A2.3RatingsforGroup
andHigher
~
A2.4 Ratings for Classes 75 and 150, All
Material Groups
Pressure-temperature ratings for Classes 75 and 150
flanges are determined for each material group as set
forth in paras; A2.1, A2.2, and A2.3 with the following
exceptions.
(a) The value of P , inEq.(1) (para A2.1) shallbe
57.5 psi for Class75 and 115 psi for Class 150.
(b) Thevalue for SI shall bein accordance with
therequirements of paras. A2.1,A2.2,andA2.3.
(c) The value for PT in Eq. (1)at temperature T
(degrees Fahrenheit) shallnotexceedthatgiven
by
Eqs. (2) and (3).
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zyxwv
zyxwvu
For Class 75
Pr = 160 - 0.15T
ForClass150
2 Materials, Class 300
PT
= 320 - 0.3T
(3)
The limits of T in equation (2) and (3) are 100°F min.
and1000°Fmax. For values of T less than100"F, T
equal to 100°F isused.
The selected stress S,, for each material group among
Group 2 materials in Table IA is determined as follows.
(a) Attemperaturesbelowthecreeprange,
SI is
determinedin accordance with para. A2.2(a),except
that 70% of yield strength shall be used,instead of
60%, inparas. A2.2(a)(l) and (a)(2).
(b) Attemperaturesin
the creep range(defined as
those above 950°F for Group 2 materials), SIis determinedinaccordancewithpara.A2.2(b).
(c) The limitationsinparas.A2.2(c),
(d), (e), and
(0 apply.
A3 MAXIMUM RATINGS
A3.1 Maximum Ratings
A set of maximum or ceiling pressure-temperature
ratings, PC,are shown in Table Al. They are imposed
to limitdeflections.
48
COPYRIGHT American Society of Mechanical Engineers
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(2)
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S T D - A S M E B L b - V 7 - E N G L 3 7 7 b W 0759b70 0579234490
ASME 816.47-1996
LARGE DIAMETER STEEL FLANGES
TABLE A l
zyxwvu
zyxwvut
RATING CEILING VALUES
Working Pressure, psig, by Classes
Temperature,
"F
-20 to 100
200
300
400
650
700
750
800
850
900
950
1O00
1050
1100
1150
1200
1250
1300
1350
1400
1450
1500
75
150
750
750
145
130
115
290 1O00
260 1O00
1455
1O0
85
70
200 705 940
500 170
665
600
885
805
60
125 590
110
570
530
95
785
755
710
675
485
450 50
650
600
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
...
80
65
510
35
20
385
365
...
...
...
...
180
140
105
...
...
...
2250 1500
2250 1500
970 2185
730 230
21 15 1410
1995 1330
1815 1210
1765
1705
1595
1175
1135
1015
975
900
360
1525
1460
1350
1160
I O90
1080
150 225
115
720
620 41
365 545
275 410
205 310
245
185
140
1065
zyxwv
645 965
550 825
O
365
75
1O0
60
80
40 55 85
...
...
900
140
775
725
325 430
275
205 275
...
605
515
485
480
49
COPYRIGHT American Society of Mechanical Engineers
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600
400
300
175
125
zyxwvutsrqponm
METER
LARGE ASME
STEEL FLANGES
B16.47-1996
ANNEX B
GASKETS
(Other Than Ring-Joint)
zyxwvutsrqp
zyxwvutsrqp
zyxwvutsr
(This Annex is an integral part of ASME 816.47-1996 and is placed after the main text for convenience.)
B1 SCOPE
established by the user. Reference to a dimensional
standard for gaskets, such as ASME B16.21 and ASME
B16.20 is recommended. In any case, selecteddirnensions should bebasedon
the type of gasket and its
characteristics. These characteristics include its density,
flexibility, resistance to the fluidandits temperature,
and the necessity for satisfactorily compressing the
O.D., or both. Also to be
gasket on its I.D.,its
considered is the question of allowing a “pocket” at
the gasket I.D. (between the flange facings) or of
allowing any intrusion of the gasket into the flange
bore. Consideration should be given to the service fluid
as well as to the possibility of damage whichmight
result from partially disintegrated gaskets.
(b) Gaskets are divided into three groups basedon
their gasket loading factors as shownin the ASME
BPV Code, Section VIII, Division 1, Pressure Vessels.
This Annex covers gasket characteristics.
B2 GASKET MATERIALSAND
CONSTRUCTION
Classification of gasket materials and types is shown in
Fig. B l . Other gaskets, which result in no increase in bolt
loads or flange momentover those resulting from the gaskets included in the respective groups in this Appendix,
may be used and warrant
the ratings of this Standard with
the limiting dimensions of the applicable group. See also
para. 5.4 for application of gaskets.
B3 GASKET DIMENSIONS
(a) The actual dimensions of a gasket mustbe
51
COPYRIGHT American Society of Mechanical Engineers
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Gasket
Group
Number
Sketches
Gasket Material
Self-Energizing Types
O-rings, metallic, elastomer, other gasket types considered
as self-sealing
...
Elastomer Without Fabric
la
Compressed Sheet Suitable for
the Operating Conditions
Elastomer With Cotton Fabric Insertion
Elastomer With or Without Wire
Reinforcement
Vegetable Fiber
Spiral-Wound Metal, With NonmetallicFiber
lb
Corrugated Aluminum, Copper or Copper Alloy orCorrugated Aluminum,
Copper or Copper Alloy Double JacketedWith NonmetallicFiller
Corrugated Aluminum, Copper, or Brass
Corrugated Metal orCorrugated Metal Double JacketedWith NonmetallicFiber
Corrugated Metal
Ila
and
Ilb
Flat Metal Jacketed With Nonmetallic Fiber
zyxwvutsrq
Grooved Metal
Solid FlatSoft Aluminum
llla
and
lllb
Solid Flat Metal
...
Ring-Joint
FIG. B1 GASKETGROUPS AND TYPICALMATERIALS
52
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
utsrqponmlkji
zy
METER
LARGE
816.47-1996
ANNEX C
METHOD FOR CALCULATING BOLT LENGTHS
zyx
zyxwvutsrq
zyxwvuts
zyxwvuts
zyxwvut
zyxwvuts
zyxwvutsrq
zyxwvu
(This Annex is not part of ASME 616.47-1996and is included for information only. See para. 6.5.2.)
The following formulas [see Note (l)] may be used
to establishbolt lengths.
FIG. C1 SPECIFIEDSTUD-BOLTLENGTH
where
A = 2(C + 1 + d) + G + F (i.e., stud-bolt length
exclusive of negative length tolerance n)
C = minimum flange thickness [see Tables
5
through 15 and Note ( 2 ) below]
F = total height of facings of depth of ring-joint
groove for both flanges (see Table Cl)
G = 0.12 in. gasket thickness for raised face
LCSB = calculated stud-bolt length (effective thread
length, excluding end points)
LSSB = specified stud-bolt length (effective thread
length, excluding end points), which is Lesa
rounded off to the nearest practical increment
(see Fig. Cl)
d = heavy nutthickness (equals nominal bolt diameter, see ASMWANSI B 18.2.2)
n = negative tolerance on bolt length (see Table
C2)
r = plus tolerance for flange thickness (see para.
7.2)
Data for Length Calculations
TABLE C l F VALUES
Total Height of Facings or Depth of RingJoint Groove for Both Flanges, F
Flanged
Joint
Class
150 and 300
400 to 2500
~
Type of Flange Facing
0.25 in.
Raised
0.06 in.
Raised
Ring-Joint
Zero [Note (l)] 0.50 in. 2 X groove depth
0.50in. 2 x groove depth
0.12 in.
~
~~
~
~~
NOTE:
(1) Raised face (0.06in.) is included in minimum flange thickness for Classes 75, 150, and 300 flanges.
NOTES:
(1) The equationsusedinthis
Annex arefor
calculated bolt
lengths established to assure full thread engagement of heavy hexagon
nuts when worst case tolerances occur on allrelevant dimensions
of theflanged joint. The use of shorter bolt lengths is acceptable
providedthat full thread engagement is obtained at assembly (see
para. 6.5.2)
(2) 0.06 in. raised face is includedinminimum flange thickness
for Classes 75. 150, and 300 flanges.
TABLE C2 n VALUES
Length
Negative
Tolerance
on Bolt Lengths, n
0.06 in. for lengths up to 12 in., incl.
0.12 in. for lengths over 12 in. to 18 in., incl.
0.25 in. for lengths over 18 in.
53
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
~~
-
~
zyxwv
zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA
~~
S T D - A S M E B L b * q T - E N G L 399b m 0 7 5 9 b 7 0 0577238 03b W
STEEL
LARGE DIAMETER
ASME 816.47-1996
ANNEX D
QUALITY SYSTEM PROGRAM
(This Annex is an integral part of ASME 616.47.1996 and is placed after the main text for convenience.)
zyx
zyxwvutsrq
zyxwvutsrqpon
zyxw
The products manufactured in accordance with this
Standard shall beproduced
under a quality system
program following the principles of an appropriate
standard from the I S 0 9000 series.’ A determination
of the need for registration andor certification of the
product manufacturer’s quality systemprogram by an
independent organization shall be the responsibility of
the manufacturer. The detailed documentation demonstrating program compliance shall be available tothe
purchaser at the manufacturer’s facility. A written summary description of the program utilized by the product
manufacturer shall be available to the purchaser upon
request. The product manufacturer is defined as the
entity whose name or trademark appears on the product
in accordance with the marking or identification requirements of this Standard.
’The series is also available from theAmericanNationalStandards
Institute (ANSI) and the American Society forQualityControl
by a
(ASQC) as AmericanNationalStandardsthatareidentified
prefix “Q’replacing theprefix “ISO”.Eachstandard of theseries
is listed under Annex E.
55
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
zyxwv
~
S T D * A S M E BLb.47-ENGL L99b
METER
m
zyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJI
0759b70 0579237 T 7 2
~
m
LARGE
616.47-1996
ANNEX E
REFERENCES
zyx
zyxwvutsrq
(This Annex is an integral part of ASME 816.47.1996 and is placed after the main text for convenience.)
The following is a list of standards and specifications referenced in this Standard, showing the year of approval.
Products covered by each ASTM specification are listed for convenience. (See specifications for exact titles and
detailed contents.)
API Publications
API Standard 605-1988
Large-Diameter Carbon Steel Flanges
ASME Publications
ASME B1.1-1989
ASME B1.20.1-1983(R1992)
ASME B16.20-1993
ASME B16.21-1992
ASME B16.34-1996
ASME B18.2.1-1981(R1992)
ASME B18.2.2-1987(R1993)
ASME B31.3-1992
ASME B36.10M-1985
ANSUASME B46.1-1985
Unified Inch Screw Threads (UN and UNR Thread Form)
Pipe Threads, General Purpose (Inch)
Metallic Gaskets for Pipe Flanges - Rmg-Joint, Spiral-Wound, and Jacketed
Nonmetallic Flat Gaskets for Pipe Flanges
Valves - Flanged, Threaded, and Welding End
Square and Hex Bolts and Screws, Inch Series
Square and Hex Nuts (Inch Series)
Chemical Plant and Petroleum Refinery Piping
Welded and Seamless Wrought Steel Pipe
Surface Texture (Surface Roughness, Waviness, and Lay)
ASME Boiler and Pressure Vessel Code, 1995 Edition (Including Addenda Through 1995)
Power Section I
Boilers
Section II
Materials
Section III
Nuclear Power Plant Components
Section VIII, Div.
1 &2
Pressure Vessels
International Standards Organization (ISO)
IS0 9000-1: 1994
Quality management and quality assurance standards - Part 1: Guidelines for selection and use
IS0 9000-2: 1993
Quality management
and
quality assurance standard - Part 2: Generic guidelines
for the application of IS0 9001, IS0 9002, and IS0 9003
the
IS0 9000-3: 1991
Quality management
and quality assurance standards - Part 3: Guidelines for
application of IS0 9001 to the development, supply and maintenance of software
IS0 9001: 1994
Quality systems - Model for quality assurance in design, development, production,
installation, and servicing
IS0 9002: 1994
Quality systems - Model for quality assurance in production and servicing
I S 0 9003: 1994
Quality systems - Model for quality assurance final
in
inspection and test
57
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
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ASME 816.47-1996
ASTM Publications
A 105-93b
A 182-93b
A 193-93a
A 194-93a
A
A
A
A
203-93
204-93
216-89
217-91
A 240-93b
A 307-93a
A 320-93
A 350-93
A 351-93
A 352-92
A 354-93
A 387-92''
A 449-93
A 453-92
A 515-92
A 5 16-90
A 537-91
A 540-92
E 29-93
FLANGES
STEEL
DIAMETER
LARGE
Forgings, Carbon Steel, for Piping Components
Forged or Rolled Alloy Steel Pipe Flanges, Forged Fittings, and Valves and Parts
for High Temperature Service
Alloy-Steel and Stainless Steel Bolting Materials for High-Temperature Service
CarbonandAlloy Steel Nuts for Bolts for High-PressureandHigh-Temperature
Service
Pressure Vessel Plates, Alloy Steel, Nickel
Pressure Vessel Plates, Alloy Steel, Molybdenum
Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service
Steel Castings, MartensiticStainless and Alloy,for Pressure-ContainingParts, Suitable
for High-Temperature Service
Heat-ResistingChromiumandChromium-Nickel
Stainless Steel Plate, Sheet, and
Strip for Pressure Vessels
Carbon Steel Bolts and Studs, 60,000 psi Tensile Strength
Alloy-Steel Bolting Materials for Low-Temperature Service
Forgings,CarbonandLow-Alloy
Steel, RequiringNotch ToughnessTestingfor
Piping Components
Steel Castings, Austenitic, Austenitic-Ferritic (Duplex), for Pressure-ContainingParts
Steel Castings, Femtic and Martensitic, for Pressure-Containing Parts, Suitable for
Low-Temperature Service
Quenched and Timpered Alloy Steel Bolts, Studs, and Other Externally Threaded
Fasteners
Pressure Vessel Plates, Alloy Steel, Chromium-Molybdenum
Quenched and Tempered Steel Bolts and Studs
Bolting Materials, High-Temperature,50 to 120 ksi [345 to 827 MPa] Yield Strength,
With Expansion Coefficients Comparable to Austenitic Steels
Pressure Vessel Plates, Carbon Steel, for Intermediate- and Higher-Temperature
Service
Pressure Vessel Plates, Carbon Steel, For Moderate- andLower-Temperature Service
Pressure Vessel Plates, Heat-Treated, Carbon-Manganese-SiliconSteel
Alloy-Steel Bolting Materials for Special Applications
Using Significant Digits inTest Data to Determine Conformance with Specifications
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MSS Publications
MSS SP-9-1992
Spot-Facing for Bronze,
Iron,
and
Steel Flanges
MSS SP-25-1978(R1983,R1988) Standard Marking System for Valves, Fittings, Flanges, and Unions
MSS SP-44-1991
Steel Pipe Line Flanges
MSS SP-45-1992
Bypass and Drain Connection
MSS SP-61-1992
Pressure Testingof Steel Valves
Publications of the following organizations appear in the above list:
American Society for Quality Control
P.O. Box 3005
Milwaukee, W1 53201-3005
API
American Petroleum Institute
1220 L Street, N.W., Washington, D.C. 20005
58
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
ETER
LARGE
ASME
STEEL FLANGES
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ASME 816.47-1996
The American Society of Mechanical Engineers
345 East 47th Street, New York, New York 10017-2392
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ASME Order Department
22 Law Drive, Box 2300, Fairfield, New Jersey 07007-2300
ASTM
American Society for Testing and Materials
1916 Race Street, Philadelphia, Pennsylvania 19103
MSS
Manufacturers Standardization Society of the Valve & Fittings Industry
127 Park Street, N.E., Vienna, Virginia 22180
IS0 documents are available from ANSI. Publications appearing
National Standards may also be obtained from ANSI.
ANSI
above which have been approved
American National Standards Institute, Inc.
11 West 42nd St., New York, New York 10036
59
COPYRIGHT American Society of Mechanical Engineers
Licensed by Information Handling Services
as American