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BVAg-31 / PAL 10 Technical Data


BVAg-31 / PAL 10 can be used on any of the common ferrous and non-ferrous alloys. Due to its low vapor pressure compared to standard silver base filler metals, BVAg-31 / PAL 10 is suitable for use in all vacuum applications such as electronic valve construction and vacuum tube construction in the electronics industry. This allow is often used in brazing of metallized ceramics to nickel-cobalt-iron assemblies. In the aerospace industry, BVAg-31 / PAL 10 can be used in the brazing of fuel line assemblies and aero-engine components. 

Brazing Characteristics

The palladium content in BVAg-31 / PAL 10 inhibits the potential of stress corrosion cracking in iron-nickel base metals in comparison to standard silver-copper alloys. BVAg-31 / PAL 10 exhibits high corrosion and oxidation resistance.

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 silver base alloys falls within 0.000in – 0.002in (0.00mm – 0.05mm) range.


BVAg-31 / PAL 10 conforms to American Welding Society (AWS) A5.8/A5.8M BVAg-31 Grade 1 & 2

Available Forms

Wire, strip, engineered preforms, specialty preforms per customer specification, powder and paste.

Compare With

  • AWS: BVAg-31
  • Lucas: Premabraze 580
  • UNS: P07587


  • Brazing Temperature Range High: 1665 F / 907 C
  • Brazing Temperature Range Low: 1615 F / 879 C
  • Liquidus: 1565 F / 852 C
  • Solidus: 1515 F / 824 C



  • Ag: 58%
  • Cu: 32%
  • Pd: 10%

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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