Gerencia Técnica
Departamento de Ingeniería y Obras
MET ET 032
WELDING REQUIREMENTS FOR EQUIPMENT AND
PIPING
REV.
FECHA
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DESCRIPCION
PREPARADO
POR
APROBADO
POR
WELDING
REQUIREMENTS
FOR
EQUIPMENT AND PIPING
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INDICE DE REVISIONES
PÁGINA
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REVISIÓN
FECHA
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INDEX
I.
II.
A.
B.
C.
D.
E.
F.
G.
III.
A.
B.
IV.
C.
D.
E.
F.
V.
VI.
SCOPE .............................................................................................................................. 4
WELDING - REQUIREMENTS AND RESTRICTIONS ...................................................... 4
General............................................................................................................................ 4
Submerged Arc Welding Restrictions .............................................................................. 6
Short/Pulsed Arc Welding Restrictions. ........................................................................... 6
Base Metal Preparation ................................................................................................... 7
Welding Clad & Overlay Materials ................................................................................... 7
Heat Exchanger Tube to Tubesheet Welds ..................................................................... 7
Selection of Welding Filler Metals ................................................................................... 8
PREHEAT .......................................................................................................................... 9
Ferritic Steels .................................................................................................................. 9
Austenitic Stainless Steels and High Nickel Alloys .......................................................... 9
POSTWELD HEAT TREATMENT (PWHT) ....................................................................... 9
Vessels ............................................................................................................................ 9
Exchangers ..................................................................................................................... 9
Piping .............................................................................................................................. 8
When PWHT is specified for process reasons .............................................................. 10
QUALITY CONTROL REQUIREMENTS ......................................................................... 10
PROCEDURE SUBMITAL REQUIREMENTS ................................................................. 11
TABLAS
Table 1: Information To Be Included In Welding Procedures Description ................................ 10
Table 2: Recommended Filler Metal For Welding Ferritic Steels ............................................. 12
Table 3: Recommended Filler Metals For Joining Ferritic Steels ............................................. 13
Table 4: Recommended Filler Metals For Joining Austenitic S.S. and High Nickel Alloys ......13
Table 4 (Cont): ........................................................................................................................ 14
Table 5: Recommended Filler Metals For Joining Aluminum And Aluminum Alloys ................ 16
Table 6: Recommended Filler Metals For Welding Integrally Clad Materials ........................... 17
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I.
SCOPE
A. This specification outlines requirements for welding, including preheat and postweld heat
treatment of vessels, heat exchangers, piping, piping components, heater tubing and
other equipment. Requirements for weld overlay cladding, fabrication of integral clad plate
and tube to tubesheet welding are also included.
B. Except as supplemented in this specification, welding shall conform to the requirements of
the latest edition and revision of the following codes:
1.
2.
3.
4.
5.
ANSI/ASME B31.3 - Chemical Plant and Petroleum Refinery Piping Code
ANSI/ASME B31.1 – Power Piping Code
ASME Boiler and Pressure Vessel Code, Sections I, VIII and IX
API 1104, ANSI/ASME B 31.4
ANSI/AWS D10.8 - Recommended practices for welding of Chromium-Molybdenum
steel Piping and Tubing
C. In no case is this specification to be used to supersede, delete or lower applicable code
requirements.
D. Any conflict between this specification and other Contractor drawings, specifications,
standards, codes, etc., shall be brought to the attention of Contractor in writing, for
clarification prior to any action by the vendor. The more stringent requirements shall
govern until written resolution is provided by Contractor.
II.
WELDING - REQUIREMENTS AND RESTRICTIONS
A. General
1. Acceptable welding processes are given below. Requests to use any other welding
processes shall be submitted to Contractor for review.
a. SMAW - Shielded Metal Arc Welding.
b. GTAW – Gas Tungsten Arc Welding
c. GMAW – Gas Metal Arc Welding
d. FCAW - Flux-Cored Arc Welding
e. SAW - Submerged Arc Welding
f. PAW - Plasma Arc Welding
g. ESW - Electroslag Welding
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2. Electrodes and/or filler metals shall be selected such that:
a. The strength of deposited weld metal shall be at least equal to the specified
minimum tensile strengths of the material being welded.
b. When joining similar materials the chemical composition of the deposited weld
metal shall match that of the base material as closely as possible.
However, this shall not preclude the use of welding materials containing alloying
elements of different types or in different amounts than those in the base materials
provided there is evidence that such elements are not harmful or are beneficial from
the standpoint of achieving desirable weld metal properties, such as adequate tensile
strength after post weld heat treatment or adequate impact strength at low
temperatures.
3. Where hardness limits are prescribed in the Job Specification for welded equipment,
hardness of weld metal and heat affected zone shall not exceed those values.
Hardness limits for piping shall not exceed the following values:
Base Metal
P-Number
1
3
4
5
6
4.
5.
0
6.
7.
8.
1
Maximum
Hardness, Brinell
(Hb)
200
2251
225I
241I
241I
When welding two P-Numbers of base metal, the maximum hardness allowed shall be
that prescribed for the higher alloy (P-Number).
Unless otherwise approved in writing by Contractor, only low hydrogen electrodes shall
be used for shielded metal arc welding carbon and low alloy steels, except for root
pass welding of single welded joints. (See paragraph II.A.5 below).
Where access or wall thickness precludes the use of double welded butt joints, single
welded joints shall be made using a root pass deposited by the GTAW (TIG) or GMAW
(short arc) process. For carbon steel piping, the use of E6010 electrodes for root pass
welding by SMAW is acceptable with Contractors approval (Not for LPG , H2S nad
steam services).
Unless specifically approved in writing by Contractor, nonremovable backing rings or
strips shall not be used for butt joints.
Full-penetration butt joints which are accessible from both sides shall be back gouged
or ground to sound metal after welding the first side and then back welded on the
reverse side, unless the welding procedure otherwise assures that full penetration will
be achieved.
Welds of nozzles and manways to equipment shells and heads shall be full penetration
welds.
Required by ANSI / ASME B31.3
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9. Internal purging with inert gas is required for gas tungsten arc welding of single-welded
butt joints in non-ferrous metals, and ferrous metals with over 5% total alloy content.
10. Self-shielded flux-cored arc welding of carbon or low alloy steels without external
shielding gas is not acceptable for pressure joints or for welds subject to vibration.
11. Welding of proprietary items such as Alonized pipe, etc. is not permitted without prior
Contractor approval.
B. Submerged Arc Welding Restrictions
1. The use of neutral flux (nonvoltage-sensitive) is required for submerged arc welding of
pressure-containing welds, attachment welds to pressure parts end welds in major
structural load-carrying members.
2. Alloy wire and neutral flux, rather than alloying through the flux, are required where an
alloy weld deposit is desired.
3. The flux and wire combination actually used shall be the same as used in the
procedure qualification. The manufacturer and brand name or grade of flux shall be
specified in the welding procedure.
4. Manual submerged arc welding is not permitted for pressure joints.
C. Short Arc and Pulsed Arc Welding Restrictions.
0
1. Manual short arc or spray arc welding is:
a. Allowed for root pass welding of butt joints in any material regardless of thickness.
b. Allowed for full thickness butt welds and fillet welds in pressure parts, structural
supports, and equipment internals if the thickness of either material at the joint does
not exceed 10 mm.
c. Not allowed where large material mass heat sinks can affect the integrity of welds,
such as nozzle welds, reinforcing pads, flange welds, etc., and where the thickness
of either material at the joint exceeds 10 mm.
d. Not allowed for piping smaller than NPS 3, allowed only where the direction of travel
is indicated in the procedure.
e. To be inspected as stated in paragraph V of this specification, with 5% of welds
radiographed in addition to applicable code requirements.
0 f. To be UT tested for lack of fusion
2. Automatic short arc or pulsed arc welding is allowed for full thickness butt welds in all
sizes of piping within the following limitations:
a. 1G (Rolled) position only.
b. For thicknesses over 10 mm, use of an automatic arc oscillator is recommended
and a minimum current of 170 amperes is required for all passes after the root
pass.
c. 5% of welds in thicknesses up to 10 mm and 10% of welds in thicknesses over 10
mm must be radiographed in addition to any applicable code requirement.
Technique and acceptance standards shall be as stated in paragraph V of this
specification.
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d. Not allowed where large material mass heat sinks can affect the integrity of welds,
as with couplings, weldolets, branch welds, fillet welds on slip-on flanges, socketwelded flanges and fittings, etc., or where the thickness of either material at the joint
exceeds 10 mm.
e. To be UT tested
D. Base Metal Preparation
1. Joint preparation for welding may be performed by machining, grinding, thermal
cuttings or combinations thereof. Excessively deep or sharp irregularities in joint edges
shall be removed by machining or by grinding. Joint edges shall be free of cracks and
laminations prior to welding.
2. Prior to welding, all oil, grease, dirt, rust or loose scale and paint shall be removed from
the surfaces of the joint and the adjacent base metal within one inch from the edge of
0
the joint, except for approved paint in qualified welding procedures.
E. Welding Clad & Overlay Materials
1. Weld overlay procedures shall be qualified in accordance with the requirements of
ASME Code, Section IX, Paragraph QW-214 and QW-281. Qualification weld test
specimens shall be subjected to PWHT, if required, equivalent to that anticipated for
fabrication, including aggregate time at temperature, with appropriate allowance for
repair cycles.
2. The minimum clad or overlay thickness shall be as specified on drawings and
requisitions.
3. Weld overlays shall meet the chemical requirements for the specified type or grade.
4. Where specifications require chemical analysis of stainless steel overlays in
production, and where such overlays will experience postweld heat treatment in the
temperature range form 650 ºC to 732 ºC, the ferrite number for Type 309L/308L, and
the ferrite number and Cb/C ratio for Type 347 shall not exceed the following values,
depending upon the chromium content:
Chromium Content Ferrite Number
Cb/C
Of Overlay
Ratio
Less than 20%,
4-12
35 max
20% to 22% incl.
4-9
25 max
Greater than 22%
4-9
15 max
5. Ferrite number may be determined by chemical analysis and reference to a Delong or
Schaeffler diagram or by measurement with calibrated magnetic instruments.
F. Heat Exchanger Tube to Tubesheet Welds
1. Seal welds are required for any of the following conditions:
a. When specified in the Job Specification.
b. When design pressure is 105 Kg/cm2g or greater, but differential pressure is less
than 70 Kg/cm2g.
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2. Strength welds are required for any of the following conditions:
a. When specified in the Job Specification.
b. For waste heat boilers.
c. When design pressure is 105 Kg/cm2g or greater, with differential pressure of 70
Kg/cm2g or greater.
d. When design temperature is greater than 400ºC.
3. When seal welds are specified in the Job Specification, they shall be in accordance
with Figure PFT-12.1 (e), Section I of the ASME Boiler and Pressure Vessel Code.
When strength welds are specified they shall be in accordance with Figure PFT-12.1
(g). For exchanger design where the tubes are considered as stays, only strength (not
seal) welds shall be used.
4. For exchangers in services where hardness of welds has to be controlled, carbon steel
tubesheets shall have 0.21% C maximum (SA-516 Gr. 55 or 60) and carbon steel
tubes 0.18% C maximum. Hardness of welds and heat affected zone (HAZ) shall not
exceed 200 HB.
5. Tube to tubesheet mock-up samples shall be submitted to Contractor for any of the
following conditions:
a. When specified on the Requisition.
b. Material combinations involving P-Numbers of 21 or greater.(P-Number from ASME
Code, Section IX, Table QW-422).
c. When strength welds are specified.
6. Mock-up samples shall be constructed using actual production welders, materials and
procedures for the piece of equipment involved.
7. Mock-up samples shall have a minimum of 6 tubes 10 mm in length from the backside
of the tubesheet, using the same pitch arrangement as the piece of equipment
involved.
G. Selection of Welding Filler Metals
1. Ferritic Steels
Recommended filler metals for similar and dissimilar welds in ferritic steels are given in
Tables 2 and 3.
2. Austenitic Stainless Steels and High Nickel Alloys
Recommended filler metals for joining similar and dissimilar stainless steels and high
nickel alloys are given in Table 4.
3. Aluminum and Aluminum Alloys
Recommended filler metals for joining similar and dissimilar aluminum and aluminum
alloys are given in Table 5.
4. Integrally Clad Materials
Recommended filler metals for welding integrally clad materials are given in Table 6.
5. Ferritic Steels to Austenitic Stainless Steels and to High Nickel Alloys
a. For carbon and low allow steels welded to 300 series austenitic stainless steels use
Type 309, 309 L, 309 Cb, 309 Mb,310, 310 Cb or 310 Mo stainless steels, or nickel-
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chromium-iron alloy filler metals such as ENiCrFe-3 (Inconel 182), ENiCrFe-2 (IncoWeld A), or ERNiCr-3 (Inconel 82).
Where thermal cycling conditions and operating temperatures over 427ºC exist, the
Inconel filler metals are preferred, except where the environment contains sulfur.
b. For carbon an low alloy steels welded to Inconel or Incoloy alloys, use Inconel
welding filler metals ENiCrFe-3 (Inconel 182, ENiCrFe-2 (IN-Weld A), or ERNiCr-3
(Inconel 82).
c. For carbon and low alloy steels welded to Monel (nickel-copper alloy) use Monel
filler metals EniCu-7 (Monel 190) or ERNiCu-7 (Monel 60).
6. Deviations from the listed tables shall be indicated in the welding proceduresIII. PREHEAT
A. Ferritic Steels
1. Vessels and Exchangers
Preheat shall be in accordance with the recommendations of ASME Boiler and
Pressure Vessel Code, Section VIII, Appendix R as a minimum, or the applicable
requirements of that Code Section.
2. Piping
Preheat shall be in accordance with the applicable requirements or recommendations
0
of ANSI/ASME B31.3, ANSI/ASME B31.1. or ANSI/AWS D 10.8, the most stringent
requirements shall govern.
B. Austenitic Stainless Steels and High Nickel Alloys
For all thicknesses of austenitic stainless steels, HK, HT, Incoloy and high nickel alloys,
preheat shall be 10-C minimum. The maximum interpass temperature shall be 177ºC.
IV. POSTWELD HEAT TREATMENT (PWHT)
C. Vessels
PWHT shall be in accordance with the requirements of ASME Boiler and Pressure Vessel
Code, Section VIII or Section I as applicable.
D. Exchangers
PWHT shall be in accordance with the requirements of ASME Boiler and Pressure Vessel
Code, Section VIII or Section I, and the TEMA Class as specified in the Requisition.
E. Piping
PWHT shall be in accordance with the applicable requirements of ANSI/ASME B.31.3, or
ANSI/ASME B31.1 or ANSI/AWS D 10.8, except that welds involving P-4 and P-5 alloys
0
require PWHT regardless of thickness, the most stringent requirements shall govern
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F. When PWHT is specified for process reasons
When PWHT is specified for process reasons, welding or arc strikes are not permitted
after final PWHT, regardless of Code provisions to the contrary.
V. QUALITY CONTROL REQUIREMENTS
A. All welds shall have a workmanlike finish to satisfy the requirements of the applicable
Code and/or the intended application.
B. Reinforcement of butt welds shall be in accordance with the requirements to the
applicable Code.
C. Weld repairs shall comply with the requirements of the applicable code, including preheat
requirements or recommendations, postweld heat treatment requirements, and
nondestructive examination.
D. For pressure-containing items, all required repairs to base metal shall be reported to
Contractor for review and approval, prior to making the repair.
E. Radiography shall be performed on all full thickness butt welds as follows:
1. Piping
a. Radiographic technique and acceptance standards shall conform to ANSI/ASME
B31.3 or ANSI/ASME B31.1, as applicable.
b. Three-fifths of the welds examined shall consist of welds joining a welding neck
flange to another component, if the fabrication involves such joints.
c. The work of all welders and welding operators, or combinations thereof for each Pnumber shall be included in each method of radiography.
2. Vessels and Exchangers
a. Radiographic technique and acceptance standards shall conform to ASME Boiler
and Pressure Vessel Code, Section VIII, Paragraph UW-51 or UW-52 as
applicable, or Section I, Paragraph PW-11, PW-41, and PW-51.
b. The work of all welders employed on the job shall be included in this radiography.
c. When submerged arc welding has been for main seams, all intersections seams,
and stopping and starting points of weld beads shall be radiographed.
F.
Right of Access
Representatives of Contractor, the Authorized Inspection Agency, and the client or his
agent, shall have access to the vendor's facilities and equipment for the purpose of
inspection and audit of work and materials. The Contractor representatives shall have free
entry, at all times while work on this Contract is being performed, to all parts of the
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vendor's works that concern the fabrication, assembly and/or installation. The vendor shall
afford the inspector all reasonable facilities to satisfy him that the work is being furnished
in accordance with the Contract. All inspections shall be conducted so as not interfere
unnecessarily with the operation of the works.
G. Subcontracting
1. Use of subcontractors by the vendor for any operations required for the execution of
this contract by the vendor is prohibited without prior permission and approval by
Contractor. Subcontractors include other plant locations than the main, or identified
plant of the vendor.
2. All the requirements of this document, including all the herein referenced documents,
codes, specifications, procedures, etc. are applicable to the subcontractor and are to
be included in vendor's purchase orders to subcontractors.
VI. PROCEDURE SUBMITAL REQUIREMENTS
A
Welding procedures shall be submitted to Contractor for approval prior to the start of
fabrication. Those to be used for the welding of refractory anchors, including stud
welding, shall also be submitted for approval.
B
Vendor shall prepare and qualify welding procedures in accordance with the
requirements of Section IX of the ASME Boiler and Pressure Vessel Code. The vendor
shall submit an index of all weld procedures required for the job accompanied by four
copies of each procedure (including the Procedure Qualification Record). In addition,
weld maps shall be submitted for vessels and exchangers.
Procedures shall be in accordance with the edition of Section IX of the Boiler and
Pressure Vessel Code in effect on the date the Purchase Order is placed.
C
D
Procedures for field PWHT and/or local PWHT for lined, clad or weld overlayed
equipment shall be submitted to - Contractor for review and approval.
E
Procedures shall be submitted at least one month prior to required fabrication date.
Submittals shall be made in accordance with the Job General Notes Requisition.
F
Procedures shall contain the specific information required by Section IX of the ASME
Code (QW-201.1) and Table l. It is suggested that the WPS form (QW-482)
recommended by Section IX be utilized.
A
B
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Table 1:
INFORMATION TO BE INCLUDED
IN WELDING PROCEDURES DESCRIPTION
Filler metal classification where available, or if not,
manufacturer's designation.
Submerged arc flux AWS classification, if any, and the
manufacturer's brand name or grade.
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C
D
Special requirements such as constant potential power
sources, pulse setting, wire feed or oscillation rates,
electrode stick-out, etc. (as applicable).
Specific precautions to be taken in fiel welding, if
applicable, to prevent wind or drafts from interfering with
the shielding gas protection.
Table 2:
FILLER RECOMMENDED METAL
FOR WELDING FERRITIC STEELS
(Code letter Definitions are given in Table 3)
MAT'LS TO
BE WELDED
Carbon Steel
Carbon Steel
C-½Mo
Mn-Mo
1¼Cr-½Mo
A/B
B/C
B/D
B/E
C
C/D
C/E
D
D/E
C - ½ Mo
Mn – Mo
1¼ Cr - ½Mo
MAT'LS TO
BE WELDED
Carbon Steel
E
2¼Cr-1Mo 5 Cr-½Mo 7 Cr-½Mo 9 Cr-½Mo
410 S
B/F
B/G
B/H
B/H
I
C-½Mo
C/F
C/G
C/H
C/H
I
Mn-Mo
D/F
D/G
D/H
D/H
I
1¼Cr-½Mo
E/F
E/G
E/H
E/H
I
2¼Cr-1Mo
F
F/G
F/H
F/H
I
G
G/H
G/H
G/I
H
H
H/I
H
H/I
5 Cr-½Mo
7 Cr-½Mo
9 Cr-½Mo
410 S
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Table 3:
RECOMMENDED FILLER METALS FOR JOINING FERRITIC STEELS
Filler Code
Manual
Submerge
Gas
Gas
Flux Cored
From
Shielded
d Arc Wire
Tungsten
Metal
Arc
Table 2
Metal ARC
(6)
Arc
Arc
A
E6010(1)
Carbon
E70T-1
E70S-3
E70S-3
E6011(1)
Steel (7)(8)
E70T-5
E70S-2
E70S-3
B
E7018
Carbon
E70T-1
E70S-3
E70S-3
E7015
Steel (7)(8)
E70T-5
E70S-2
E70S-2
C
E7016
E7015-A1
EA2
(Mn-Mo)
(Mn-Mo)
D
E9018-D1(2)
-E70S-1B
E70S-1B
(Mn-Mo)
E9015-G(3)
EA3
(Mn-Mo)
E
E8015-B2
1¼Cr-½Mo Type 515
Type 515
E8015-B2L(4)
E8015-B2
EB2
E8015-B2
F
E9015-B3
2¼Cr-1Mo Type 521
Type 521
E9015-B3L(4) EB3
E9015-B3
E9015-B3
G
E502-15(Cr) ER502
5Cr-½Mo
ER502
ER502
H
E7Cr-15(7Cr) ----ER505
ER505
(E505-15)
ER505
ER505
(7Cr or 9 Cr)
I
E309-15
ER 309L
--ER309L
ER309L
Notes for Table 3 :
1. Use only as root pass
2. For hydrogen service, special order resulting in welds with 0,40 to 0,60 % Mo content must be
used.
3. This refers to special E9015-G electrode developed by Champion to weld Mn-Mo steel.
4. For equipment operating in creep range do not use low carbon grade of filler metal.
5. Where austenitic stainless steel filler metal is used for dissimilar metal joints, thermal stresses
resulting from difference in coefficients of thermal expansion shall be considered.
6. Alloy welding electrodes shall have the alloying agents in the wire and not in the flux.
7. Manganese - Molybdenum steel electrode wires may be used, provided the weld metal hardness
does not exceed 200 HB.
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8. Electrodes specified in ASME SA5.7, and electrode classifications EL12 or EM12K, specified in
ASME SFA5.23, shall not be used for submerged arc welding carbon steels having a minimum
specified tensile strength of 70,000 psi or higher, where postweld heat treatment is specified.
MAT'LS
TO BE
WELDED
301
302
304
304L
Table 4:
RECOMMENDED FILLER METALS FOR JOINING AUSTENITIC
STAINLESS STEELS AND HIGH NICKEL ALLOY (1)
301
304L
309
310
316(2) 316L(2) 317(2)
302
309S
310S
304
308
308
308
308
308(5)
308
308
309
309
309S
310
310S
316
316L
317
321
308L
308
309
308
309
309
310
321
308(5)
308
308L
308
308L
309
316
309
316
316(5)
316
309
309
316
316
316L
317
309
309
321
309
309
316
316
316(5)
316L
321(3)
317
321(3)
321(3)(5
)
347(5)
317
Notes for Table 4
1. Deposited Type 300 stainless steel weld metal shall have a ferrite number as indicated in
Paragraph II.E.4.
2. Filler metals used in welding 316, 316L or 317 parts in fatty acid service shall contain a minimum
Mo content of 2.5% and a maximum carbon content of 0.05%.
3. Where Type 321 filler metal is specified, this applies to bare welding filler metal. For coated
electrodes, use Type 347.
4. Filler metals used in welding Monel parts in hydrofluoric acid service shall contain no columbium.
5. For equipment operating in the creep range, filler metals shall be restricted to a minimum carbon
level of 0.04%.
Ancap – División Combustibles.
WELDING
REQUIREMENTS
FOR
EQUIPMENT AND PIPING
MET ET 032
Pág 15 de 18
Rev : 1
Fecha : 30.12.2003
División
Combustibles
Gerencia Técnica
MAT'LS
TO BE
WELDED
301
302
304
304L
Table 4 (cont.):
RECOMMENDED FILLER METALS FOR JOINING AUSTENITIC
STAINLESS STEELS AND HIGH NICKEL ALLOY (1)
347
348
INCOLOY
MONEL
HASTELLOY
ALLOY 20
308 (5)
308(5)
EniCrFe-3
ERNiCr-3
---
---
---
308L
308L
---
---
---
309
309S
310
310S
316
347
309
309
348
309
309
---
---
---
---
---
---
316
316
---
---
---
316L
316L
347
317
347
321(3)(5)
347(5)
347(5)
316L
348
317
348
321(3)(5)
348(5)
347(5)
348
348
EniCrFe-3
ERNiCr-3
EniCrFe-3
ERNiCr-3
EniCrFe-3
ERNiCr-3
EniCrFe-3
ERNiCr-3
EniCrFe-3
ERNiCr-3
EniCrFe-3
ERNiCr-3
EniCrFe-3
ERNiCr-3
EniCrFe-3
ERNiCr-3
EniCrFe-3
ERNiCr-3
EniCrFe-3
ERNiCr-3
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
---
ENiCrMo-4
ENiCrMo-4
---
317
321
347
348
INCOLOY
800
MONEL
HASTELLOY
C-276
ALLOY 20
EniCu-7(4)
ERNiCu-7(4)
E320LR
E320LR
Notes for Table 4
1. Deposited Type 300 stainless steel weld metal shall have a ferrite number as indicated in
Paragraph II.E.4.
Ancap – División Combustibles.
WELDING
REQUIREMENTS
FOR
EQUIPMENT AND PIPING
MET ET 032
Pág 16 de 18
Rev : 1
Fecha : 30.12.2003
División
Combustibles
Gerencia Técnica
2. Filler metals used in welding 316, 316L or 317 parts in fatty acid service shall contain a minimum
Mo content of 2.5% and a maximum carbon content of 0.05%.
3. Where Type 321 filler metal is specified, this applies to bare welding filler metal. For coated
electrodes, use Type 547.
4. Filler metals used in welding Monel parts in hydrofluoric acid service shall contain no columbium.
5. For equipment operating in the creep range, filler metals shall be restricted to a minimum carbon
level of 0.04%.
Table 5:
RECOMMENDED FILLER METALS FOR JOINING ALUMINUM AND ALUMINUM ALLOYS (1)
MAT'LS
TO BE
WELDED
1060
1100
1060
ER1260
ER1100
ER4043
5050
5052
5652
5083
5086
5154
5354
5456
6061
6063
ER1100 ER4043
ER1100
ER4043
ER5356
ER5356
ER4043
ER5356
ER4043
ER4043
ER4043
ER4043
ER4043
ER4043
ER5183
ER4043
ER1100
ER1100 ER4043
ER4043
ER4043
ER5356
ER5356
ER4043
ER5356
ER4043
ER4043 ER5356
ER5356
ER5356
ER4043
ER4043
ER5183
ER4043
ER1100 ER4043
ER4043
ER4043
ER5356
ER5356
ER4043
ER5356
ER4043 ER5356
ER5356
ER5356
ER4043
ER4043
ER5183
ER4043
ER4043
ER4043
ER4043
ER5356
ER5356
ER5654
ER5356
ER4043
ER5356
ER5356
ER5356
ER5556
ER5556 ER5356* ER5556
ER5356*
ER4043
ER4043
ER5356
ER5356
ER5356
ER4043
ER5356
ER5356
ER5556
ER5556 ER5356* ER5556
ER5356*
5052
ER5654
ER5356
ER5356
ER5356
5652
ER5356* ER5556
5083
ER5183
ER5356
ER5356
ER5183
ER5356
ER5356
ER5556
ER5556
ER5556
ER5556
ER5356
ER5356
1100
3003
3004
5050
5086
3003
3004
ER5654
ER5654
ER5356
ER4043
ER4043
ER5556 ER5356* ER5556* ER5356*
ER5356
ER5356
ER5556 ER5556* ER5556
ER5556
5124
ER5654
ER5356
5254
ER5356* ER5556* ER5556*
5456
ER5556
ER5356
ER5356
ER5556
ER5356
6061
ER4043
6063
ER5356*
* The choice of filler metal may be limited by service conditions such as immersion is fresh or
salt water, exposure to specific chemicals, or to a sustained temperature between 66ºC and
232ºC. Contact Contractor, Technical services and Quality Assurance Department if such
conditions exist for specific recommendations.
Ancap – División Combustibles.
WELDING
REQUIREMENTS
FOR
EQUIPMENT AND PIPING
MET ET 032
Pág 17 de 18
Rev : 1
Fecha : 30.12.2003
División
Combustibles
Gerencia Técnica
Notes for Table 5: The filler metal listed on the top line of each combination is the preferred
wire. The filler metal listed on the bottom line of each combination is an acceptable alternate.
Table 6:
RECOMMENDED FILLER METALS FOR WELDING INTEGRALLY CLAD MATERIALS(4)
CLADDING
MATERIAL
70 Ni-30 Cu
(Annealed
Monel)
12 Cr
SPECIFIC
FILLER METALS FOR
REQUIREMENTS OVERLAYING WELDED JOINT (4)
ASME SFA.-5.11
Class ENiCu-7 (1)
Type 410
Type 410S
Do not Overlay
ASME SFA.-5.11
Class EniCrFe-3(2)
ASME SFA.-5.11
Class E309L(3)
FIRST PASS
Austenitic
Stainless
Steel
Type 304
Type 304L
Type 316
Type 316L
Type 321
Type 347
309L
309L
309L
309L
309L
309L
SUBSEQUENT
PASSES
308L
308L
316
316L
347
347
Notes for Table 6 :
1. ENiCu-7 (monel welding electrode 190, or equal)
2. ENiCrFe-3 (Inconel welding electrode 182, or equal) preferred for temperatures above 427 ºC or
where thermal cycling conditions are anticipated. Consult Contractor Technology Department if
environment contains sulfur above 427 ºC.
3. For operating temperatures below approximately 427ºC and/or where thermal cycling conditions
are not severe.
Ancap – División Combustibles.
WELDING
REQUIREMENTS
FOR
EQUIPMENT AND PIPING
División
Combustibles
Gerencia Técnica
MET ET 032
Pág 18 de 18
Rev : 1
Fecha : 30.12.2003
4. Overlays usually require a minimum of two layers, however, single-layer overlays are acceptable
provided dimensional requirements are met, and chemical composition and soundness are
satisfactory. The number of layers in production shall not be less than the number of layers in the
procedure qualification test.
Ancap – División Combustibles.