Vacuum Grade Brazing Alloys

Vacuum brazing is a material joining technique that offers significant advantages: extremely clean, superior, flux-free braze joints of high integrity and strength.

 

Select Aufhauser vacuum grade SilverAlloys or GoldAlloys for your precision brazing applications.

 

Aufhauser Trade Name AWS A5.8 Ag Au Cu Ni Other Zn Grade 1 Zn Grade 2 Cd Grade 1 Cd Grade 2 Solidus (Melting) Liquidus (Flowing) Description
SilverAlloy A-100 BVAg-0 99.95 - 0.05 - - 0.001 0.002 0.001 0.002 1764°F/ 962°C 1764°F/ 962°C High purity brazing alloy. Applications include aeronautical work, electrical and linear-beam vacuum tubes, automotive parts.
SilverAlloy BV-50 BVAg-6b 50 - 50 - - 0.001 0.002 0.001 0.002 1435°F/ 779°C 1602°F/ 872°C  
SilverAlloy BV-72 BVAg-8 72 - 28 - - 0.001 0.002 0.001 0.002 1435°F/ 779°C 1435°F/ 779°C For strong, robust, integral joints: aeronautical applications, linear-beam vacuum tubes, power supply surge protectors, automotive parts.
SilverAlloy BV-71 BVAg-8b 71 - 28.5 0.5 - 0.001 0.002 0.001 0.002 1436°F/ 780°C 1463°F/ 795°C Contains a small amount of nickel which improves the wetting of the surface of ferrous metals.
SilverAlloy BV-68 BVAg-30 68 - 27 - 5 Pd 0.001 0.002 0.001 0.002 1485°F/ 806°C 1490°F/ 809°C For use on ferrous/ non-ferrous alloys, for brazing metallized ceramics to nickel-cobalt-iron assemblies, or joining glass to metal seals.
SilverAlloy BV-61 BVAg-29 61.5 - 24 - 14.5 In 0.001 0.002 0.001 0.002 1155°F/ 624°C 1305°F/ 707°C Moderate temperature low pressure systems, in particular the electronic vacuum tube.
SilverAlloy BV-60 BVAg-18 60 - 30 - 10 Sn 0.001 0.002 0.001 0.002 1115°F/ 602°C 1325°F/ 718°C Special alloy with very low level of impurities for vacuum brazing.
SilverAlloy BV-58 BVAg-31 58 - 32 - 10 Pd 0.001 0.002 0.001 0.002 1515°F/ 824°C 1565°F/ 852°C  
SilverAlloy BV-54 BVAg-32 54 - 21 - 25 Pd 0.001 0.002 0.001 0.002 1650°F/ 900°C 1740°F/ 950°C  
GoldAlloy BV-80 BVAu-2 - 80 20 - - 0.001 0.002 0.001 0.002 1635°F/ 891°C 1635°F/ 891°C  
GoldAlloy BV-35Ni BVAu-3 - 35 62 3 - 0.001 0.002 0.001 0.002 1814°F/ 990°C 1850°F/ 1010°C  
GoldAlloy BV-82 BVAu-4 - 82 - 18 - 0.001 0.002 0.001 0.002 1740°F/ 949°C 1740°F /949°C  
GoldAlloy BV-92 BVAu-8 - 92 - - 8 Pd 0.001 0.002 0.001 0.002 2190°F/ 1200°C 2265°F/ 1240°C  
GoldAlloy BV-35 BVAu-9 - 35 65 - - 0.001 0.002 0.001 0.002 1814°F/ 990°C 1850°F/ 1010°C Good for Kovar alloys. Suitable in brazing ceramics to metals.
GoldAlloy BV-50 BVAu-10 - 50 50 - - 0.001 0.002 0.001 0.002 1751°F/ 955°C 1778°F/ 970°C Provides good wetting on metallized ceramics, including molybdenum-manganese metallized.
GoldAlloy BV-ACS-60 - 20 60 20 - - 0.001 0.002 0.001 0.002 1535°F/ 835°C 1553°F/ 845°C Excellent vacuum properties along with high corrosion and oxidation resistance
GoldAlloy BV-ACS-75 - 5 75 20 - - 0.001 0.002 0.001 0.002 1625°F/ 885°C 1643°F/ 895°C More ductile than standard gold-copper alloys
GoldAlloy BV-ACN-81 - - 81.5 16.5 2 - 0.001 0.002 0.001 0.002 1670°F/ 910°C 1697°F/ 925°C Provides high-integrity brazed joint duties in aero-engines, aerospace fuel-line assemblies, vacuum tubes, automotive components.

 

 

Nominal Composition

 

 

Solidus - Liquidus Range

 

 

Indicative Silver Price: $14.45/Oz. T.


Last Updated On: 9/25/2018

Indicative Copper Price: $2.82/Lb.


Last Updated On: 9/25/2018

Contact Us

  • Address:
    Aufhauser Corporation
    39 West Mall, Plainview, NY 11803 USA

  • Phone: +1-212-246-0205

  • Email: sales @ brazing.com