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PAL 65/BVPd-1 Technical Data


PAL 65 can be used on any common molybdenum, tungsten or iron based heat-resistant alloys. Due to the relatively low penetration of the base metal during brazing this alloy is ideally suited for thin components such as thin-wall tubing or electronic vacuum devices. .

Brazing Characteristics

The palladium content in PAL 65 inhibits the potential of stress corrosion cracking in iron-nickel base metals in comparison to standard silver-copper alloys. PAL 65 also exhibits higher corrosion and oxidation resistance than standard silver-copper alloys. This alloy composition is ideal for use in applications which require a low volume of volatile constituents.

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.


PAL 65 alloy conforms to: Unified Numbering System (UNS) P03657 and American Welding Society (AWS) A5.8/A5.8M BVPd-1 Grade 1 and Grade 2.

Available Forms

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

Compare With

  • AWS: BVPd-1
  • UNS: P03657


  • Brazing Temperature Range High: 2355 F / 1291 C
  • Brazing Temperature Range Low: 2305 F / 1263 C
  • Liquidus: 2255 F / 1235 C
  • Solidus: 2245 F / 1229 C



  • Pd: 65%
  • Co: 35%

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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