Johnson Matthey Metal Joining - High Temperature Brazing Alloys
Index
Page
About Johnson Matthey
4
About Johnson Matthey Metal Joining
5
Pallabraze Alloys
6
Orobraze Alloys
7
Silver Brazing Alloys
8
Nickel Based Alloys
9
Argentel and Bronze Alloys
10
Copper Based Alloys
11
High Temperature Brazing Fluxes
12
Product Availability
13
Precious Metal Brazing Materials Reference Chart
14
3
Johnson Matthey plc
Johnson Matthey is a world leader in all aspects of precious metals technology.
Building on 180 years of expertise in assaying and refining, the name of
Johnson Matthey has become synonymous with the highest levels of quality and
customer service.
Today Johnson Matthey has worldwide businesses in Chemicals and Catalysts,
Precious Metals and Colours and Coatings. The Company is continually changing and
developing new technologies to meet the current and future needs of our customers.
Johnson Matthey is a key supplier to many of the worlds automotive and
aerospace companies.
Johnson Matthey Metal Joining
High Temperature Brazing Processes
Johnson Matthey use global sourcing and
manufacturing capabilities to offer the
widest range of High Temperature Brazing
Alloys. These materials have a many
applications. They are used for aerospace,
automotive or electronic components.
Some have found special applications in
mining or drilling equipment or in chemical
and engineering industries.
4
About Johnson Matthey - Metal Joining
Johnson Matthey have over 70 years experience in the brazing and soldering industry and have a global manufacturing capability. Our aim is
to provide our customers with value for money whilst maintaining our renowned product quality and service. We recognise that customers
face ever increasing challenges, and we intend to offer full technical product support.
When you buy our products, you will receive not only the best quality, but also a solution to your brazing and soldering requirements.
We serve customers in all industry sectors, from aerospace and electronics to mining and drilling. Our product range has evolved to meet
their needs. We actively look to work in partnership with customers, the goal often being to increase the efficiency of their brazing and
soldering processes.
Johnson Matthey constantly monitor advances in materials technology using the expertise of our sites worldwide as well as that of our
partners in the industry. This combined expertise enables us to offer the best solutions to metal joining problems and in many cases
significantly reduces process costs.
Johnson Matthey - Metal Joining Quality
All branches of Metal Joining have been accredited with ISO 9002 and numerous customer quality approvals.
Certification to national and international standards is available and all our products are supported by full COSHH documentation.
High Temperature
Brazing Processes
5
Pallabraze Alloys
Palladium based brazing alloys
Introduction
Johnson Matthey’s Pallabraze range of alloys are manufactured to ‘vacuum grade’ purity standards. In addition to traditional aerospace and electronics
applications they have been used in the glass and chemical industries where increased resistance to corrosion and chemical attack makes them a good choice.
Physical Properties of the Alloys
Composition (%)
Melting
Standards
Name
Pd
Ag
Cu
Ni
Range °C
BS1845:1984
EN 1044:1999
Pallabraze 810
5
68.5
26.5
-
807 - 810
PD1V
PD106
Pallabraze 840
10
67.5
22.5
-
834 - 840
PD3V
PD104
Pallabraze 850
10
58.5
31.5
-
824 - 850
PD2V
PD105
Pallabraze 880
15
65
20
-
856 - 880
PD4V
PD103
Pallabraze 900
20
52
28
-
876 - 900
PD5V
PD102
Pallabraze 950
25
54
21
-
901 - 950
PD6V
PD101
Pallabraze 1010
5
95
-
-
970 - 1010
PD7V
PD204
Pallabraze 1090
18
-
82
-
1080 - 1090
PD8V
PD203
Pallabraze 1225
30
70
-
-
1150 - 1225
Pallabraze 1237
60
-
-
40
1237 - 1237
PD14V
PD201
Impurity levels – Refer to EN1044:1999 or Johnson Matthey technical department for more details.
Features of the range
• Joints brazed with Pallabraze alloys have good oxidation resistance and
improved mechanical strength at elevated temperatures. For example
Pallabraze 810 shows resistance up to 500°C and Pallabraze 1237 offers
effective oxidation resistance up to 700°C.
• Pallabraze alloys offer good corrosion resistance and show excellent
resistance to interfacial corrosion when brazing ferritic and austenitic
stainless steels.
• Pallabrazes exhibit minimal errosion on ferrous and nickel-bearing alloys
during brazing.
6
• Palladium-bearing alloys do not cause 'stress cracking' and are
recommended on iron-nickel-cobalt alloys.
• Pallabrazes are free from volatile constituents making them particularly
useful in vacuum applications such as electronic valve and power tube
construction.
• The narrow melting ranges of the Pallabraze alloys enables complex
components to be assembled by a step brazing.
• Pallabrazes have excellent flow and penetration qualities but are also
capable of filling joint gaps up to 0.5mm.
Orobraze Alloys
Gold based brazing alloys
Introduction
Johnson Matthey supplies a wide range of high purity Gold brazing alloys. These are manufactured to the highest quality to meet the needs of the aerospace and
electronics industries. In addition to the alloys shown below JM are able to supply most gold bearing brazing materials available today.
Physical Properties of the Alloys
Melting
Standards
Name
Composition (%)
Au
Cu
Ni
Other
Range °C
BS1845:1984 EN 1044:1999
Orobraze 845
60
20
-
20Ag
835 - 845
-
-
-
Orobraze 910
80
19
-
1Fe
908 - 910
AU1V
AU101
-
Orobraze 940
62.5
37.5
-
-
930 - 940
AU2V
AU102
-
Orobraze 950
82
-
18
-
950 - 950
AU5V
AU105
4787/BAu-4
Orobraze 970
50
50
-
-
955 - 970
-
-
Orobraze 990
75
25
-
950 - 990
AU6V
AU106
-
Orobraze 998
37.5
62.5
-
-
980 - 998
AU3V
AU103
BAu-1
Orobraze 1005
35
65
-
-
970 - 1005
-
Orobraze 1018
30
70
-
-
996 - 1018
AU4V
AU104
-
Orobraze 1030
35
62
3
-
1000 - 1030
-
-
BAu-3
Orobraze 1040
70
-
-
30Ag
1030 - 1040
-
-
-
-
AMS/AWS A5.8
Impurity levels – Refer to EN 1044:1999 or Johnson Matthey technical department for more details.
Features of the range
Gold-Copper Orobrazes
Gold-NickeI Orobrazes
• Gold-copper Orobrazes exhibit exceptional resistance to corrosion and
• Nickel-bearing Orobrazes exhibit increased high temperature strength and
strength at elevated temperatures.
• Gold-copper Orobrazes can produce ductile joints without excessive
resistance to oxidation at elevated temperatures compared to gold-copper
alloys.
inter-alloying between the brazing alloy and the parent material. This is
• These alloys offer good corrosion resistance in many chemical environments.
advantageous when brazing thin-walled structures.
• Alloys such as Orobraze 950 find extensive application in the manufacture of
• Gold-copper Orobrazes exhibit good wetting on copper, nickel, iron, cobalt,
molybdenum, niobium, tungsten and their alloys.
• The gold-copper Orobrazes are ideal for use in vacuum devices that operate
at elevated temperatures as they contain no volatile elements.
aeroengine components.
• Gold-nickel Orobrazes exhibit flow characteristics superior to the gold-copper
Orobrazes on nimonics, super-alloys and stainless steel.
• Orobraze alloys exhibit a number of well-defined melting ranges which make
them suitable for step brazing.
7
Silver Brazing Alloys
For Special Brazing Applications
Introduction
Johnson Matthey Metal Joining supply a range of special silver brazing alloys. In this range are a number of alloys which are designed for or can be used in furnace
brazing applications. Some like Silver Copper Eutectic, IN10 and IN15 are designed to meet the high purity requirements of the electronics industry, whilst others
are designed for specific applications.
Physical Properties of the Alloys
Composition (%)
Ag
Cu
Melting
Alloy Specification
In
other
Range °C
EN1044:1999 / BS1845:1984 / AWS A5.8
-
Silver
99.9 -
-
-
960
Standard Silver
92.5 7.5
-
-
805-890
-
Silver-Copper Eutectic
72
28
-
-
778
EN1044:1999 AG401 / BS1845:1984 AG7V*
IN 10
63
27
10
-
685 - 730
*
IN 15
61
24
15
-
630 - 705
*
RTSN
60
10
-
10 Sn
602 - 718
AMS4773 / B-Ag 18
85/15 Ag/Mn
85
-
-
15 Mn
960 - 970
EN1044:1999 AG501 / BS1845:1984 AG19 / B-Ag 23
DHE310
54
40
-
5Z n,1 Ni
718 - 857
AMS4772 / B-Ag 13
*Impurity levels – Refer to EN 1044:1999 or Johnson Matthey technical department for more details.
Features of the range
Silver Alloys
Silver and Standard Silver can be used for the furnace brazing of Titanium.
Silver Copper
Eutectic
commonly used metals are Nilo K (Kovar) type alloys which are used because their thermal expansion closely matches that of alumina.
Silver Copper Eutectic is widely used for the brazing of metal to metallized alumina ceramics used in electronic components. The most
These alloys are prone to intergranular penetration by Silver-Copper Eutectic. This tendency is generally avoided by nickel plating the
components or by using a silver-copper-palladium alloy such as Pallabraze 810. Silver copper eutectic has excellent flow characteristics.
IN 10
The flow characteristics of IN10 and IN15 are more sluggish than Silver-Copper Eutectic and liquation (a separation of the metallurgical
IN 15
Eutectic. They are used where a lower brazing temperature is desirable, or step brazing with Silver-Copper Eutectic is required
RTSN
RTSN is an alloy for furnace or vacuum brazing with good corrosion resistance in marine environments.
85/15 Ag/Mn
85/15 Ag/Mn is used for the joining of steel and stainless steel assemblies in contact with ammonia, where copper containing materials
phases of the brazing alloy) may occur if a protracted heating cycle is used. IN10 and IN15 have similar applications to Silver-Copper
are not acceptable.
DHE 310
8
DHE 310 is used in furnace brazing where fast heating rates are possible to avoid liquation.
Nickel Based Alloys
High Temperature Furnace Brazing
Introduction
Nickel based brazing alloys provide exceptional resistance to chemical corrosion and oxidation coupled with high strength at elevated temperatures. The alloys in
this range have a variety of compositions that result in differing melting ranges, alloy flow, brazing and joint characteristics.
These alloys are widely used particularly within the Aerospace and Nuclear industry. Vacuum brazing and controlled atmosphere brazing (pure dry Hydrogen or
Argon) are the most common heating methods used.
They are often used to join stainless steel (300 and 400 series) as well as nickel and cobalt base alloys. In addition carbon and low alloy steels and copper can be
brazed with selected nickel based brazing alloys.
Physical Properties of the Alloys
Alloy Composition
Melting
Specifications
Name
Ni
Cr
Fe
B
Others
Range ˚C
BS1845 1984
AMS / AWS
EN1044 1999
HTN1
Bal
14
4.5
3.1
Si 4.5,C 0.7
980-1060
HTN1
4775/BNi-1
NI101
HTN1A
Bal
14
4.5
3.1
Si 4.5
980-1070
HTN1A
4776/BNi-1a
NI1A1
HTN2
Bal
7
3.0
3.1
Si 4.5
970-1000
HTN2
4777/BNi-2
NI102
HTN3
Bal
-
0.5
3.1
Si 4.5
980-1040
HTN3
4778/BNi-3
NI103
HTN4
Bal
-
1.5
1.8
Si 3.5
980-1070
HTN4
4779/BNi-4
NI104
HTN5
Bal
19
-
-
Si 10.1
1080-1135
HTN5
4782/BNi-5
NI105
HTN6
Bal
-
-
-
P 11
875
HTN6
BNi-6
NI106
HTN7
Bal
14
-
-
P10.1
890
HTN7
BNi-7
NI107
Alloys are available in powder and paste form. Melt spun foils, tapes and preforms can be supplied. Aerospace and aero-engine approved materials. Special alloys
and product forms are possible.
Features of the range
HTN 1
HTN1 produces high strength, oxidation and corrosion resistant parts and is useful in highly stressed components. Typical joint gaps are 0.05-0.12mm.
HTN 1a
HTN1a has a restricted carbon content and is used for similar applications to HTN1. Typical joint gaps are 0.15mm.
HTN 2
HTN2 is the first choice for many applications except very thin walled assemblies. Good alloy flow allows joint clearances of 0.025-0.1mm.
HTN 3
HTN3 is again similar to HTN1 but finds applications in marginal brazing atmospheres offering good flow where tight joint tolerances are encountered.
HTN 4
HTN4 has a wide melting range which can produce large, ductile fillets. Suitable for brazing components where tight joint tolerances are not possible.
HTN 5
HTN5 is used for high strength, oxidation resistant joints that can operate at elevated temperatures. Joint gaps up to 0.1mm.
HTN 6
HTN6 is a free flowing alloy that can be used on Fe and Ni alloys and low chromium steels in exothermic atmospheres. Contact joint gaps are required.
HTN 7
HTN7 is used on thin walled structures and on high temperature components. It shows low erosion on Fe and Ni alloys. Contact joint gaps are required.
9
Argentel and Bronze Alloys
Base metal brazing alloys
Introduction
JM Argentel alloys are used in the braze or bronze welding processes. In this process some penetration of the filler metal may be obtained into the capilliary gaps
between the components being joined. However strength is achieved in the joint by building up a fillet of the braze metal. Today the widest use for these alloys is
in ‘brazing’ of steels and tungsten carbide.
JM Bronze alloys are a range of special alloys designed for high temperature brazing of steel and carbide components. Each has specific alloy characteristics and uses.
Physical Properties of the Alloys
Melting
Standards
Alloy
Nominal Composition
Cu
Zn
Mn
Ni
Other
Range ˚C
BS1845:1984
Argentel No 1
60
Bal
-
-
0.2Si
875-895
CZ6
CU301
Argentel
48
42
-
10
-
920-980
CZ8
CU305
B-Bronze
97
-
-
3
0.03 B
1081-1101
CU7
CU105
C-Bronze
86.5
-
11
2.5
-
965-995
-
-
F-Bronze
57.5
38.5
2
-
2 Co
890-930
-
-
D-Bronze
86
10
-
-
4 Co
980-1030
-
-
EN1044:1999
Features of the Range
JM Argentel Range of Brazing Alloys
Argentel No 1
Argentel No. 1 is widely used in the joining of mild steel, galvanised steel, cast iron and some copper alloys.
Argentel
Argentel is a nickel containing alloy and gives extremely strong joints on stainless and mild steels and cast iron.
JM Bronze Range of Brazing Alloys
B Bronze
C Bronze
B Bronze – see page 11 for details of this alloy.
C Bronze - has good gap-bridging properties in the range 0.025 mm up to 0.75 mm and offers excellent resistance to interfacial
corrosion when used on ferritic or austenitic stainless steels. Due to the manganese content the alloy requires a furnace atmosphere
with a dew point better than - 40°C. It is also used in vacuum brazing provided a partial pressure of argon is applied. If required
C Bronze can be brazed in air using Tenacity 125 as a flux.
D Bronze
D Bronze is used in the brazing of rock drills where its good wetting properties and strength coupled with an ability to allow heat
treatment of the drill shank at temperatures between 800 - 1000°C. The alloy is frequently induction brazed in air with Tenacity 125 flux.
F Bronze
F Bronze is used to braze tungsten carbide into rock drills or similar equipment. It is harder than D Bronze and is used where the heat
treatment of the steel drill shank is temperature critical. Induction or flame heating with Tenacity 125 flux are usually used.
10
Copper Based Alloys
High Temperature Furnace Brazing
Introduction
Johnson Matthey supply a series of high temperature copper base alloys. These alloys are used for brazing in reducing atmosphere belt furnaces and in vacuum
furnaces. They are available in a variety of forms and are designed to meet the needs of a range of customers from commercial jobs to more demanding
automotive or aerospace applicatons.
Physical Properties of the Alloys
Alloy
Pure Copper
JM Bronze Alloys
Copper Tin Alloys
Composition
Melting
Specification
Cu
Ni
Sn
Other
Range °C
EN1044:1099 / AWS A5.8 / BS1845:1984
Copper
99.9
-
-
-
1085
CU101 / BCu-1 / CDA 110 / CU2
Copper
99.95
-
-
-
1085
CU102 / CU3
B Bronze
97
3
-
1081-1101
CU7
C Bronze
86.5
2.5
-
11 Mn
965-995
-
92/8
91.75
-
8
0.25 P
882-1027
CDA 521
97/3
97
-
3
-
980-1070
-
96/4
96
-
4
-
950-1060
-
0.03 Boron
Some Features of the Range
Copper Alloys
Copper Alloys can be supplied as rings washers, pastes or preform shapes to speed up furnace brazing.
B Bronze
B Bronze was developed for furnace brazing of stainless steel under reducing atmospheres where the joint gaps involved cannot
be closely controlled. It will penetrate joint gaps ranging from an interference fit up to 0.5 mm. The joints produced with this alloy
in both ferritic and austenitic steels exhibit excellent resistance to interfacial corrosion.
B Bronze is ideal for the brazing of mild steels where the gaps are too large for the use of copper (i.e. over 0.025 mm).
Copper Tin Alloys
Copper Tin Alloys are used in the furnace brazing of mild steel and offer good gap filling properties. A variety of copper-tin
compositions are available.
Copper Brazepastes
Johnson Matthey supply a range of copper brazepastes in addition to those shown below. They have been designed operate in
different furnace atmospheres and have different brazing characteristics. Consult a technical representative for more details and
product datasheets.
CU 503 Brazepastes
CU 503 Brazepastes is a Copperpaste loaded with Copper Oxide, this is to help the flow in difficult atmospheres and also may help
to prevent "sooting". JM CU 521 is an alternative to CU 503 filling gaps up to 0.10mm.
CU 510 Brazepastes
CU 510 Brazepastes is used for most applications, normally used in atmospheres of Nitrogen and/or Hydrogen.
11
High Temperature Brazing Fluxes
Introduction
Flux plays a vital role in virtually all air brazing processes. Use of the wrong flux or a poor application technique can have a dramatic effect on joint quality.
Johnson Matthey produce a range of fluxes suitable for most air brazing operations. Many of the brazing alloys in this booklet are designed for furnace brazing
operations where an inert or protective atmosphere means that no flux is required. For high temperature brazing operations in air a JM Tenacity flux can be
considered. The information shown here is intended to help the user select the most suitable Johnson Matthey High Temperature Flux for a particular application.
Details of Johnson Matthey Metal Joining’s complete range of fluxes including general purpose and medium temperature fluxes can be found in the Silver Brazing
Alloys and Fluxes Booklet.
High Temperature Fluxes
Flux
Form
Working
EN 1045
Range ºC*
Standard
Flux Residue Removal
Packaging (kg)
Tenacity 5
Powder
600-900
FH10
0.25
0.5 5.0
Tenacity No.125
Powder
750-1200
FH21
0.4
4.0
Tenacity No. 125
Paste
750-1200
FH21
0.7
Tenacity No. 12
Powder
800-1300
FH21
0.5
Tenacity No.20
Powder
750-1100
FH21
0.5
Residues are insoluble in water. Remove using NaOH solution or mechanical methods.
Residues are insoluble in water. Grit blasting or mechanical removal is necessary.
Residues are insoluble in water. Grit blasting or mechanical removal is necessary.
5.0
Residues are insoluble in water. Grit blasting or mechanical removal is necessary.
Residues are insoluble in water. Grit blasting or mechanical removal is necessary.
* The lower figure is the temperature at which the flux is capable of removing metal oxide. The upper figure is the maximum temperature at which the flux will
remain effective long enough to make a sound brazed joint
Features of the Range
Tenacity No 5
Powder
Tenacity No 125
Powder & Paste
Tenacity No 12
Powder
Tenacity No 20
Powder
Flux Application
Tenacty 5 is active at 600ºC above which temperature it spreads and cleans rapidly and is effective with alloys with a liquidus up to
850˚C. Tenacity No. 5 is particularly recommended when brazing stainless steel at temperatures above 700ºC and also for brazing large
assemblies in steel or copper wherever prolonged heating is necessary.
Tenacity No. 125 is high temperature flux which is effective on copper and copper based alloys, mild and low alloy steels and tungsten
carbide with alloys melting between 800-1100˚C. It can therefore be used with the JM Argentel and Bronze alloys shown on page 10.
Tenacity No. 12 is effective on copper and copper based alloys, mild steel and tungsten carbide when used with brazing alloys melting
between 850-1200˚C.
Tenacity 20 is used for brazing or bronze welding of mild steel components using Argentel alloys.
It is recommended that flux should be applied as a paste to the parts to be joined. Powders can be made into pastes by stirring in
water until the mixture has the consistency of thick cream. A few drops of liquid detergent added to the mixture will often improve
the wetting of flux onto clean parent metals.The flux should be applied to both joint surfaces before assembly. Application of flux after
assembly places great demands on the fluidity of the molten flux and its ability to penetrate capillary joints. Brushing is an effective
method of applying a thin film of paste to the joint itself and to surrounding component surfaces.
12
More information on fluxes is available in ‘Silver Brazing Alloys and Fluxes’ or on www.jm-metaljoining.com.
Product Availability
Johnson Matthey hold a very broad range of products in stock at our sales offices.
However many of the items detailed in this booklet are manufactured to customers
orders. If we don’t carry an item that you use regularly please let us know.
The brazing alloy ranges can be manufactured in a variety of different product forms.
Wire
Wire is available either in loose coils or on reels. (Not applicable to
Nickel Brazing alloys).
Foil
Foil can be supplied on lose coils or on reels.
Sizes can usually be made to order.
Nickel based brazing alloys can also be supplied as tapes.
Rods
Brazing alloys can be supplied in rod form. (Not applicable to Nickel
Brazing alloys).
Strips
Strips can be made to order. (Not applicable to Nickel Brazing alloys).
Washers and preformed shapes
All pre-formed shapes are made to order.
A wide range of shapes including washers, clips, blocks and many foil
shapes are possible.
Rings
All brazing rings are manufactured to order. (Not applicable to Nickel
Brazing alloys).
They are made ‘butt ended’ or more commonly with ends offset.
Rings can be made in a vast range of sizes and from a wide range of wires.
Brazepastes and Powders
10
JM supply a complete range or brazepastes.
All alloys can be produced as paste or powder.
Refer to JM booklet ‘Brazepastes and Solderpastes’ for more details.
Product packaging
JM brazing materials can be packed according to customer requirements.
Quality Proceedures
All branches of Metal Joining have been accredited with ISO 9002 and numerous
customer quality approvals.
Certification to national and international standards is available and all our products
are supported by full COSHH documentation.
Please contact your local JM office to discuss any matter relating to
quality of our products or services.
13
Reference Chart
High Tempreature Brazing Materials Reference Chart
Palladium Based Brazing Alloys
Pd
Ag
Cu
Pallabraze 810 5
68.5 26.5
Pallabraze 840 10
67.5 22.5
Pallabraze 850 10
58.5 31.5
Pallabraze 880 15
65
20
Pallabraze 900 20
52
28
Pallabraze 950 25
54
21
Pallabraze 1010 5
95
Pallabraze 1090 18
82
Pallabraze 1225 30
70
Pallabraze 1237 60
-
Others
-
Melting Range°C
807-810
834-840
824-850
856-880
876-900
901-950
970-1010
1080-1090
1150-1225
1237-1237
BS1845:1984
PD1V
PD3V
PD2V
PD4V
PD5V
PD6V
PD7V
PD8V
PD14V
EN1044:1999
PD106
PD104
PD105
PD103
PD102
PD101
PD204
PD203
PD201
Others
20Ag
1 Fe
30 Ag
Melting Range°C
835-845
908-910
930-940
950-950
955-970
950-990
980-998
970-1005
996-1018
1000-1030
1030-1040
BS1845:1984
AU1V
AU2V
AU5V
AU6V
AU3V
AU4V
-
AMS /AWS
4787/BAu-4
BAu-1
BAu-3
-
Precious Metal Brazing Alloys - 1100-1300°C
Ag
Au
Cu
Ni
Pd
Other
92
8
-
Melting Range°C
1200-1270
Comment
For brazing W, Mo, Ta, and superalloys. It is oxidation resistant and ductile.
48.5
-
30
50
19
-
1219
910-1179
1135-1169
1102-1121
For
For
For
For
Precious
Ag
75
90
-
Metal
Au
25
70
70
20
25
73.8
Brazing Alloys
Cu
Ni
31
18
30
22
78
37
10
26.2
- 1000-1100°C
Pd
Other
20
5 Mn
10
15
11 Mn
8
2 In
15
13 Mn
-
Melting Range°C
1008-1072
1025-1070
1017-1052
960-1050
1005-1037
975-1025
970-1013
980-1010
Comment
For brazing superalloys and tungsten carbide.
For brazing Ni, Mo, W, stainless steel and fast braze cycles on titanium.
For brazing super alloys and tungsten carbide.
Excellent wetting, flow, strength, oxidation resistance, ductility.
For brazing superalloys and stainless steel. AMS-4786
Alternative to Orobraze 1030 and higher gold content Au-Cu alloys.
For brazing of superalloys and tungsten carbide.
For brazing of stainless steel and superalloys. For loose tolerances.
Precious
Ag
-
Metal
Au
35
40
72
31
81.25
81.5
60
Brazing Alloys
Cu
Ni
31.5
14
60
22
Bal
Bal
Bal
9.75
18
16.5
2
37
-
- 900-1000°C
Pd
Other
Melting Range°C
10
9.5 Mn
971-1004
980-1000
6 Cr
975-1000
30
10.5 Cr, 2.4 B
941-977
36
10.5 Cr, 0.5 Si 3B 820-960
9.75
16 Mn
927-949
0.75 Ti
945-960
910-925
3 In
860-900
Comment
For brazing of super alloys and tungsten carbide.
For brazing of Cu, Ni, Kovar and Mo-Mn metallised ceramics.
For brazing of diamond to stainless steel. It is corrosion resistant.
Better creep resistance than Orobraze 950 at elevated temps.
Better creep resistance than Orobraze 950 at elevated temps.
For brazing of super alloys and tungsten carbide.
Excellent for difficult to wet materials.
For brazing Cu, Ni and Mo-Mn metallised ceramics. Remains ductile.
Lower brazing temperatures than Au/Cu series.
Precious
Ag
5
82
68.8
95
Metal
Au
75
-
Brazing Alloys
Cu
Ni
20
Bal
47
26.7
-
- below 900°C
Pd
Other
Melting Range°C
885-895
45.5
5 Co, 5 Si, 4.5 Mo 847-895
9
9 Ga
845-880
47
6 Si
810-851
4.5 Ti
830-850
5 Al
780-830
Comment
Narrow melting range useful in step brazing.
Available as a melt spun foil only.
For brazing of Ti to Ti and stainless steel. Ductile and corrosion resistant.
Better creep resistance than Orobraze 950 at elevated temps.
Wets almost every material including ceramics metals and graphite.
Forms ductile joints particularly with alloys containing Aluminium.
Gold Based Brazing Alloys
Au
Cu
Orobraze 845
60
20
Orobraze 910
80
19
Orobraze 940
62.5 37.5
Orobraze 950
82
Orobraze 970
50
50
Orobraze 990
75
Orobraze 998
37.5 62.5
Orobraze 1005 35
65
Orobraze 1018 30
70
Orobraze 1030 35
62
Orobraze 1040 70
-
14
Ni
18
25
3
-
10
36
25
65
22.5
34
25
Ni
40
35 Co
-
EN1044:1999
AU101
AU102
AU105
AU106
AU103
AU104
-
brazing stainless steel, Mo, W, Ni. and superalloys. High strength,
brazing stainless steels. A ductile alloy for filling wide gaps.
superalloys. A high strength oxidation resistant alloy. AMS-4785
superalloys. A high strength oxidation resistant alloy. AMS-4784
Silver Brazing Alloys
Ag
Silver
99.99
Silver-Cu Eutectic 72
IN 10
63
IN 15
61
RTSN
60
85/15 Ag/Mn
85
DHE310
54
Argo-Braze 7
7
AMS 4765
56
AMS 4774A
63
For Special Applications
Cu
In
other
28
27
10
24
15
30
10 Sn
15 Mn
40
5Zn, 1Ni
85
8Sn
42
2Ni
28.5 2.5Ni
Active Brazing Alloys
Ag
Gold
Copper
Silver
92.75
Silver / Copper 68.8
Silver / Copper 63
Argentel and Bronze
Cu
Argentel No.1
60
Argentel
48
B Bronze
97
C Bronze
86.5
D Bronze
86
F Bronze
58
Au
96.4
-
Cu
92.75
5
26.7
35.25
Ti
0.6
2.25
1.25
4.5
1.75
Melting Range°C
960
778
685 - 730
630 - 705
602 - 718
960 - 970
718 - 857
662 - 984
771 - 893
691 - 802
EN1044:1999 / BS1845: 1984 / AWS A5.8 / AMS
AG401 / AG7V
B-Ag 18
AMS 4773
AG501 / AG19
B-Ag 23
AMS 4766
B-Ag 13
AMS 4772
B-Ag 13a
AMS 4765
AMS 4774A
Other
3 Ni
Al 2 Si 3
Al 1
-
Melting Range°C
1003-1030
958-1024
860-912
830-850
780-815
Base Metal Brazing Alloys
Zn
Others
Melting Range°C
40
0.2 Si
875-895
42
10 Ni
920-980
3 Ni
0.03B
1081-1101
2.5Ni 11Mn
965-995
4 Co 10Mn
980-1030
38
2 Co 2 Mn
890-930
BS 1845:1984
CZ6
CZ8
CU7
-
EN 1044 1999
CU301
CU302
CU105
-
Copper Based Brazing Alloys
Cu
Ni
Sn
92/8
91.75 8
97/3
97
3
96/4
96
4
CU 511
80
20
CU 512
88
12
Copper
99.9 Copper
99.95 CU510 / 513
99.9 CU535 / 557
99.4 0.6
CU503
32
CU521
32
0.6
-
Other
0.25 P
68 Cu O
68 Cu O
Melting Range°C
882-1027
980-1070
950-1060
800-980
800-890
1085
1085
1085
1085
1085
1085
EN1044 1999 / AWS A5.8
CDA 521
CU201
CU101 / BCu-1/ CDA110
CU102
CU101 / BCu-1/ CDA110
BCu-1a / BCu-2
-
Brazepaste
Brazepaste
Brazepaste
Brazepaste
Brazepaste
Brazepaste
Nickel Based Brazing Alloys
Ni
Cr
Fe
B
Others
Melting Range°C
BS1845 1984
AMS / AWS A5.8
EN1044 1984
HTN1
HTN1A
HTN2
HTN3
HTN4
HTN5
HTN6
HTN7
3.1
3.1
3.1
3.1
1.8
-
Si 4.5 Co 0.7
Si 4.5
Si 4.5
Si 4.5
Si 3.5
Si 10.1
P 11
P 10.1
980-1060
980-1070
970-1000
980-1040
980-1070
1080-1135
875
890
HTN1
HTN1A
HTN2
HTN3
HTN4
HTN5
HTN6
HTN7
4775/BNi-1
4776/BNi-1a
4777/BNi-2
4778/BNi-3
4779/BNi-4
4782/BNi-5
BNi-6
BNi-7
NI101
NI101
NI102
NI103
NI104
NI105
NI106
NI107
Bal
Bal
Bal
Bal
Bal
Bal
Bal
Bal
14
14
7
19
14
Aluminium Brazing Alloys
Al
Si
Alu-flo HT
88
12
4.5
4.5
3.0
0.5
1.5
-
2
2
Melting Range°C
577-582
only
only
only
only
only
only
Specification
4047 / BAlSi-3
NOTE:
Johnson Matthey PLC cannot anticipate all conditions under which this information and our products or the products of other manufacturers in combination
with our products will be used.
This information relates only to the specific material designated and may not be valid for such material used in combination with any other materials or in any
process. Such information is given in good faith, being based on the latest information available to Johnson Matthey PLC and is, to be best of Johnson Matthey
PLC's knowledge and belief, accurate and reliable at the time of preparation. However, no representation, warranty or guarantee is made as to the accuracy
or completeness of the information and Johnson Matthey PLC assumes no responsibility therefore and disclaims any liability for any loss, damage or injury
howsoever arising (including in respect of any claim brought by any third party) incurred using this information. The product is supplied on the condition that
the user accepts responsibility to satisfy himself as to the suitability and completeness of such information for his own particular use. Freedom from patent or
any other proprietary rights of any third party must not be assum
Acknowledgements
Kepston Ltd. (Heat Treatment and Furnace Brazing) Wednesbury West Midlands for the use of Controlled atmosphere Furnace for Photographic purposes.
15
Johnson Matthey
Johnson Matthey PLC Metal Joining York Way Royston Hertfordshire SG8 5HJ
Tel: +44 (0)1763 253200 Fax: +44 (0)1763 253168 Email: mj@matthey.com www: jm-metaljoining.com