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BVAu-10 Technical Data


BVAu-10 can be used on any of the common ferrous and non-ferrous alloys. This alloy exhibits good wetting characteristics on metallized ceramics. Typical applications include brazing of electron tubes, vacuum tubes, radar devices, and wave guides in the electronic industry. This alloy is readily used in the brazing of ceramic to metal seals.

Brazing Characteristics

BVAu-10 is generally used in reducing, vacuum or inert atmospheres. It is a less ductile alloy than standard gold-copper-nickel alloys. The composition of the alloy allows for use in applications where braze filler metals low in volatile constituents are required. This alloy exhibits free flowing characteristics due to its narrow melt range.

Properties of Brazed Joints

The properties of a brazed joint are dependent upon the base metal, joint design and brazing technique. For controlled atmosphere brazing or vacuum brazing the recommended radial joint clearance for gold base alloys fall within 0-0.002 in. (0-0.05 mm)


BVAu-10 conforms to: Unified Numbering System (UNS) P00503, American Welding Society (AWS) A5.8/A5.8M BVAu-10 Grade 1 and Grade 2

Available Forms

Wire, strip, engineered preforms, specialty preforms, powder and paste

Compare With

  • AWS: BVAu-10


  • Brazing Temperature Range High: 8680 F / 4804 C
  • Brazing Temperature Range Low: 1778 F / 970 C
  • Liquidus: 1778 F / 970 C
  • Solidus: 1751 F / 955 C



  • Au: 50%
  • Cu: 50%

The information and recommendations contained in this publication have been provided without charge & compiled from sources believed to be reliable and to represent the best information available on the subject at the time of issue. No warranty, guarantee, or representation is made by the Prince and Izant Company, Inc. as to the absolute correctness or sufficiency of any representation contained in this and other publications; Prince and Izant Company, Inc. assumes no responsibility in connection therewith; nor can it be assumed that all acceptable safety measures are contained in this and other publications, or that other or additional measures may not be required under particular or exceptional conditions or circumstances. The company and product names referenced herein are for identification purposes only. All trademarks and registered trademarks are the property of their respective owners.

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