Brazing Alloys Reference Chart

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PhosCopper SilverAlloys

AWS A5.8 Aufhauser Product name Nominal Chemical Composition % Solidus/
Liquidus
Flow Density
TO/Cu.In
Electrical
Conductivity
(%IACS)
Color AMS DIN 8513 EN 17672 Description
Ag Cu P Other
BCuP-2 PhosCopper 0 0 92.75 7.25 - 1310/1460°F
710/793°C
1350°F
732°C
4.170 7.5 Copper Yellow   L-CuP7 CuP 180 Very fluid, fast flow and economical. Used with copper, brass, and bronze base metal with recommended joint clearance 0.001" to 0.003".
BCuP-6 PhosCopper 2 2 91 7 - 1190/1450°F
643/788°C
1300°F
704°C
4.198 5.5 Light Copper   L-Ag2P CuP 279 Silver addition lowers solidus temperature, not as fluid as PhosCopper 0, gap clearance 0.001" to 0.003".
BCuP-3 PhosCopper 5 5 89 6 - 1190/1495°F
643/813°C
1325°F
718°C
4.284 9.6 Light Copper   L-Ag5P CuP 281 Used when gap clearance range is 0.003" to 0.006". Ideal for larger copper pipe sizes.
BCuP-7 PhosCopper 5HP 5 88.25 6.75 - 1190/1420°F
643/771°C
1300°F
704°C
4.231   Light Copper       For copper, brass or bronze. Slightly more fluid than PhosCopper 5 and PhosCopper 15. Used as preform rings for heat exchangers.
- PhosCopper 6D 6 87.9 6.1 - 1190/1440°F
643/782°C
1465°F
796°C
4.289 8.8 Light Copper       Developed to mimic performance of the PhosCopper 15 alloy at lower cost.
BCuP-4 PhosCopper 6HP 6 86.75 7.25 - 1190/1325°F
643/718°C
1275°F
691°C
4.202   Light Copper     CuP 283 Reasonably fluid, similar to PhosCopper 0 in joint clearance of 0.001" to 0.003". Ideal flow as preform.
BCuP-5 PhosCopper 15 15 80 5 - 1190/1475°F
643/802°C
1300°F
704°C
4.415 9.9 Light Copper   L-Ag15P CuP 284 Reasonably fluid, similar to PhosCopper 0 in joint clearance of 0.001 to 0.003". Ideal flow as preform.
- PhosCopper 18M 18 75.75 6.25 - 1190/1220°F
643/660°C
1220°F
660°C
4.45   Light Yellow     CuP 286 Automatic brazing of copper and copper products.

 
Cadmium-Bearing SilverAlloys

AWS A5.8 Product name Nominal Chemical Composition % Solidus/
Liquidus
Flow Density
TO/Cu.In
Electrical
Conductivity
(%IACS)
UNS AMS DIN 8513 EN 17672 Description
Ag Cu Zn Other Ni
SilverAlloy Cd-20 20 37.9 28 14 Cd - 1148/1382°F
620/750°C
          L-Ag20Cd    
BAg-27 SilverAlloy Cd-25 25 35 26.5 13.5 Cd - 1125/1375°F
607/746°C
1375°F
746°C
4.71 29.7         Less silver than SilverAlloy Cd-30 at the expense of increased melt temperature and range. Light Yellow.
BAg-33 SilverAlloy Cd-25L 25 30 27.5 17.5 Cd - 1125/1310°F
607/710°C
1260°F
682°C
4.538   P07252   L-Ag25Cd Ag 326 Similar to SilverAlloy Cd-25 but requires better heat control. Reduced melt range but more prone to oxidation. Light Yellow.
BAg-2a SilverAlloy Cd-30 30 27 23 20 Cd - 1125/1310°F
607/710°C
1310°F
710°C
4.618 31     L-Ag30Cd Ag 330 Less silver than SilverAlloy Cd-35 at the expense of increased melt temperature and range. Light Yellow.
BAg-2 SilverAlloy Cd-35 35 26 21 18 Cd - 1125/1295°F
607/702°C
1295°F
702°C
4.84 28.5 P07350 4768 L-Ag34Cd Ag 335 Broader melt range than SilverAlloy Cd-45. Suitable for larger gap clearance and easier filleting. Light Yellow.
SilverAlloy Cd-40 40 18 19 23 Cd - 1130/1202°F
610/650°C
          L-Ag40Cd Ag 340  
BAg-1 SilverAlloy Cd-45 45 15 16 24 Cd - 1125/1145°F
607/618°C
1145°F
618°C
4.96 27.6 P07450 4769 L-Ag45Cd Ag 345 Lowest melting range in joining ferrous, non-ferrous and dissimilar metals with close joint clearance requirement. Light Yellow.
BAg-1a SilverAlloy Cd-50 50 15.5 16.5 18 Cd - 1160/1175°F
627/635°C
1175°F
635°C
4.98 23.9 P07500 4770 L-Ag50Cd Ag 350 Similar to SilverAlloy Cd-45 properties with narrower melt range. Used on same base metals. Light Yellow.
BAg-3 SilverAlloy Cd-50Ni3 50 15.5 15.5 16 Cd 3 1170/1270°F
632/688°C
1270°F
688°C
5.02 18 P07501 4771   Ag 351 Similar to SilverAlloy Cd-45 properties with narrower melt range. Used on same base metals. Light Yellow.

 
Cadmium-Free SilverAlloys

AWS A5.8 Product name Nominal Chemical Composition % Solidus/
Liquidus
Flow Density
TO/Cu.In
Electrical
Conductivity
(%IACS)
UNS AMS DIN 8513 EN 17672 Description
Ag Cu Zn Other Ni Sn
  SilverAlloy 12 48 39.8 0.2 Si - - 1490/1535°F
810/835°C
          L-Ag12 Ag 212  
- SilverAlloy A-20 20 45 35 - - - 1315/1500°F
713/816°C
1500°F
816°C
4.451           Excellent temperature match to heat treatment of carbon steels. Good color match to yellow brass assemblies. Brass Yellow.
  SilverAlloy 20 45.8 34 0.2 Si - - 1382/1490°F
750/810°C
          L-Ag20    
BAg-26 SilverAlloy A-25MnNi 25 38 33 2 Mn 2 - 1472°F
800°C Liquidus
      P07250     Ag 425  
  SilverAlloy 25 41 33.9 0.1 Si - - 1292/1472°F
700/800°C
      P07254   L-Ag25 Ag 225  
- SilverAlloy A-25 25 52.5 22.5 - - - 1250/1575°F
677/857°C
1565°F
852°C
4.71           Less silver than SilverAlloy A-30 at the expense of increased melt temperature and range. Moderate ductility. Brass Yellow.
BAg-37 SilverAlloy A-25T 25 40 33 - - 2 1210/1435°F
654/779°C
1420°F
771°C
4.485   P07125     Ag 125 Least silver of the Ag-Cu-Zn-Sn family. Moderate ductility limits joint design and application. Light Yellow.
  SilverAlloy A-27NiMn 27 38 20 9.5 Mn 5.5 -             L-Ag27    
BAg-20 SilverAlloy A-30 30 38 32 - - - 1250/1410°F
677/766°C
1410°F
766°C
4.547 24.4 P07301   L-Ag30 Ag 230 Good for HVAC assemblies where higher temperatures can be employed. Good for copper, nickel-silvers, and other non ferrous alloys. Light Yellow.
  SilverAlloy A-30T 30 36 32 - - 2 1202/1382°F
650/750°C
      P07130   L-Ag30Sn Ag 130  
  SilverAlloy A-34T 34 36 27 - - 3 1292/1364°F
700/740°C
      P07130   L-Ag34Sn Ag 134  
BAg-35 SilverAlloy A-35 35 32 33 - - - 1265/1390°F
685/754°C
1382°F
750°C
4.67 19.8 P07351     Ag 235 Dissimilar metals brazing in refrigeration tubing. Moderate melt temperature for ferrous and non-ferrous alloys. Light Yellow.
BAg-34 SilverAlloy A-38T 38 32 28 - - 2 1200/1330°F
649/721°C
1330°F
721°C
4.624 18.0 P07380 4761   Ag 138 Similar melt temperatures to cadmium-bearing SilverAlloy Cd-30 and SilverAlloy Cd-35. Suitable for ferrous and non-ferrous metals. Light Yellow.
BAg-4 SilverAlloy A-40Ni2 40 30 28 - 2 - 1240/1435°F
671/779°C
1435°F
779°C
4.658   P07440     Ag 440 Good corrosion properties with stainless steels. Often used in joining of tungsten carbides.Light Yellow.
- SilverAlloy A-40L 40 30.5 29.5 - - - 1245°F
674°C
1340°F
727°C
4.641     4762     Narrower melt range suitable for furnace brazing of steel, nickel, copper alloys. Good ductility. Yellow.
BAg-28 SilverAlloy A-40T 40 30 28 - - 2 1200/1310°F
649/710°C
1310°F
710°C
4.76 18.0 P07401   L-Ag40Sn Ag 140 Intermediate melt temperatures of the tin containing family. Used in joining ferrous and non ferrous. Light Yellow.
BAg-5 SilverAlloy A-45 45 30 25 - - - 1225/1370°F
663/743°C
1369°F
743°C
4.728 19.0 P07453   L-Ag45 Ag 245 General purpose alloy for brazing of ferrous and non-ferrous metals. Excellent replacement to Cd containing alloys. Yellow White.
BAg-36 SilverAlloy A-45T 45 27 25 - - 3 1195/1251°F
646/677°C
1251°F
677°C
4.85 18.0 P07145   L-Ag45Sn Ag 145 Good for dissimilar metals with moderate flow characteristics. Pale Yellow.
BAg-22 SilverAlloy A-49NiMn 49 16 23 7.5 Mn 4.5 - 1260/1290°F
682/699°C
1290°F
699°C
4.876   P07490   L-Ag49 Ag449 A-49NiMn is often employed when you braze a large carbide tool insert. Also appropriate for joining porous sintered parts and wire mesh screens. Good for brazing aluminum bronze to steel. Yellow White.
BAg-6 SilverAlloy A-50 50 34 16 - - - 1270/1425°F
688/774°C
1425°F
774°C
4.876   P07503     Ag 250 Widely used for electrical applications and in joining dissimilar metals. Yellow White.
BAg-24 SilverAlloy A-50Ni2 50 20 28 - 2 - 1220/1305°F
660/707°C
1305°F
707°C
4.726 15.0 P07505 4788   Ag 450 Used with 300 series stainless in Food, Medical and Dental fields. Good Cd free alternative for SilverAlloy Cd-50Ni3 in carbide brazing. White.
  SilverAlloy A-50T 50 22 25 - - 3 1190°F
643°C
1230°F
665°C
4.8           Similar to SilverAlloy A-56T at expense of increased melt temperature and range. Pale Yellow.
BAg-13 SilverAlloy A-54Ni1 54 40 5 - 1 - 1325/1575°F
718/857°C
1575°F
857°C
5.054 49.8 P07540 4772   Ag 454 Low zinc suitable for furnace brazing. Good for elevated service temperatures to 700°F. Used for carbon assemblies. White.
  SilverAlloy A-55T 55 21 22 - - 2 1220°F
660°C Liquidus
      P07155   L-Ag55Sn Ag 155  
BAg-7 SilverAlloy A-56T 56 22 17 - - 5 1145/1205°F
618/652°C
1205°F
652°C
4.850 11.9 P07563 4763 L-Ag56Sn Ag 156 Low zinc suitable for furnace brazing. Good for elevated service temperatures to 700°F. Used for carbon assemblies. White.
  SilverAlloy A-60 60 25 15 - - - 1245°F
674°C
1345°F
729°C
4.964           Similar to SilverAlloy A-65. Good for nickel and silver alloys. White.
BAg-21 SilverAlloy A-63T 63 28.5 - - 2.5 6 1275/1475°F
690/801°C
5.19 12.8 P07630 4774   Ag 463 Low temperature brazing filler metal developed for use on 400 series stainless steels for maximum resistance to interface corrosion. White.
BAg-9 SilverAlloy A-65 65 20 15 - - - 1240°F
671°C
1325°F
718°C
5.003   P07650     Ag 265 Third lowest melt alloy of the "Silversmith Alloys". Good color match to silver. White.
BAg-10 SilverAlloy A-70 70 20 10 - - - 1275°F
691°C
1360°F
738°C
5.112   P07700     Ag 270 Used on sterling silver, next lower melt temperature below SilverAlloy A-75 in step brazing. White.
  SilverAlloy A-75 75 22 3 - - - 1365°F
741°C
1450°F
788°C
5.255           Used on sterling silver. Excellent color match to silver, highest melting of "Silversmith Alloys". White.
  SilverAlloy Z-75 75 - 25 - - - 1300°F
704°C
1345°F
729°C
5.06           Joining of steel and stainless steel assemblies that come into contact with ammonia (NH3). White.
  SilverAlloy A-100 99.95 - - - - - 1763.5°F
961.9°C
1763.5°F
961.9°C
5.527           High purity brazing alloy with applications in aeronautics, vacuum tubes, specialty parts joining.

 
Cadmium/Zinc-Free SilverAlloys

AWS A5.8 Product name Nominal Chemical Composition % Solidus/
Liquidus
Flow Density
TO/Cu.In
Electrical
Conductivity
(%IACS)
UNS AMS DIN 8513 EN 17672 Description
Ag Cu Other Ni Sn
  SilverAlloy B-7T 7 85 - - 8 1225°F
663°C
1805°F
985°C
4.683           Good for vacuum and atmosphere brazing. A replacement to copper braze when lower melt temperature is required. Yellow.
BAg-13a SilverAlloy B-56Ni2 56 42 - 2 - 1420°F
771°C
1640°F
893°C
5.14   P07560 4765   Ag 456 Good for elevated application to 700°F. Low zinc content reduces zinc deposit within furnace during brazing operation. White.
BAg-18 SilverAlloy B-60T 60 30 - - 10 1115°F
602°C
1325°F
718°C
5.048   P07600 4773   Ag 160 Good for elevated application to 700°F. Low zinc content reduces zinc deposit within furnace during brazing operation. White.
BAg-8b SilverAlloy B-72Ni 71.5 28 - 0.5 - 1435°F
779°C
1450°F
788°C
5.270           Similar to SilverAlloy B-72 Cd-Free with nickel addition to impart improved corrosion properties with stainless steel. White.
BAg-8a SilverAlloy B-72L 71.7 28 0.3 Li - - 1400°F
760°C Liquidus
      P07723       High fluidity. For ferrous and nonferrous alloys. Especially suitable for thin stainless steel.
BAg-8 SilverAlloy B-72 72 28 - - - 1435/1435°F
779/779°C
eutectic
1435°F
779°C
5.275 87 P07720   L-Ag72 Ag 272 Good for atmosphere and vacuum furnace brazing of ferrous and non-ferrous alloys. Used in critical electronic and aerospace brazements. White.
BAg-23 SilverAlloy B-85Mn 85 - 15 Mn - - 1778°F
970°C Liquidus
      P07850 4766   Ag 485  
BAg-19 SilverAlloy B-93L 92.5 7.2 0.23 Li - - 1636°F
891°C Liquidus
      P07925 4767      

 
SilverAlloys Vacuum Grade

AWS A5.8 Product name Nominal Chemical Composition %, Grade 1 (Grade 2) Solidus
(Melt)
Liquidus
(Flow)
UNS EN 17672 Description
Ag Cu Sn Pd In Zn Cd Pb P C
BVAg-6b SilverAlloy BV-50 50 50 - - - - - - - - - 1598°F
870°C
P07507    
BVAg-32 SilverAlloy BV-54 54 21 - 25 - - - - - - - 1742°F
950°C
P07587 Pd 587  
BVAg-31 SilverAlloy BV-59 58.5 31.5 - 10 - - - - - - - 1562°F
850°C
P07387 Pd 387  
BVAg-18 SilverAlloy BV-60 60 30 10 - - < 0.001
(< 0.002)
< 0.001
(< 0.002)
< 0.002
(< 0.002)
< 0.002
(< 0.02)
< 0.005
(< 0.005)
1112°F
600°C
1328°F
720°C
P07600 Ag 160 Special alloy with very low level of impurities for vacuum brazing.
BVAg-29 SilverAlloy BV-61 61 24 - - 14.5 < 0.001
(< 0.002)
< 0.001
(< 0.002)
< 0.002
(< 0.002)
< 0.002
(< 0.02
)
< 0.005
(< 0.005)
1166°F
630°C
1301°F
705°C
P07627   Moderate temperature low pressure systems, in particular the electronic vacuum tube.
BVAg-30 SilverAlloy BV-68 68 27 - 5 - < 0.001
(< 0.002)
< 0.001
(< 0.002)
< 0.002
(< 0.002)
< 0.002
(< 0.02)
< 0.005
(< 0.005)
1461°F
794°C
1497°F
814°C
P07287 Pd 287 For use on ferrous/ non-ferrous alloys; for brazing metallized ceramics to nickel-cobalt-iron assemblies, or joining glass to metal seals.
BVAg-8 SilverAlloy BV-72 72 28 - - - < 0.001
(< 0.002)
< 0.001
(< 0.002)
< 0.002
(< 0.002)
< 0.002
(< 0.02)
< 0.005
(< 0.005)
1436°F
780°C
1436°F
780°C
P07727 Ag 272 For strong, robust, integral joints: aeronautical applications, linear-beam vacuum tubes, power supply surge protectors, automotive parts.

 
Layered SilverAlloys

AWS A5.8 Product name Nominal Chemical Composition % Solidus/
Liquidus
Flow Density
TO/Cu.In
Electrical
Conductivity
(%IACS)
UNS DIN 8513 EN 17672 Description
Ag Cu Zn Other Ni
  Layermet A-40Ni2 40 30 28 - 2 1220°F
660°C
1435°F
779°C
          Similar to Layermet A-50Ni2 with higher brazing temperature, also exhibit good strength and wetting action on carbide.
  Layermet A-40Ni5           1220°F
660°C
1580°C
860°C
          Similar to Layermet A-40Ni2 with higher nickel for strength and corrosion resistance.
BAg-22 Layermet A-49NiMn 49 16 23 7.5 Mn 4.5 1260°F
682°C
1290°F
699°C
    P07490 L-Ag49 Ag449 Layermet A-49NiMn is often employed when you braze a large carbide tool insert. Also appropriate for joining porous sintered parts and wire mesh screens. Good for brazing aluminum bronze to steel.
  Layermet A-50Ni2 50 20 28 - 2 1220°F
660°C
1305°F
707°C
          A popular cadmium-free tri-layered silver-copper-silver strip in 1/2/1 ratio that delivers superb performance in carbide brazing applications.
  Layermet Cd-50Ni3 50 15.5 15.5 16 Cd 3 1170°F
632°C
1270°F
688°C
          A cadmium bearing Layermet with exceptional strength, flow characteristics, and extremely low brazing temperature.