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BVAu-9

BVAu-9 Technical Data

Uses

BVAu-9 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, wave guides in electronic industry. BVAu-9 is readily used in brazing of ceramic to metal seals.

Brazing Characteristics

BVAu-9 is generally used in reducing, vacuum, or inert atmosphere. 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. Due to its narrow plastic range, BVAu-9 exhibits free flowing characteristics.

Properties of Brazed Joints

The properties of a brazed joint are dependent upon numerous factors including base metal properties, joint design and brazing technique. For controlled atmosphere brazing or vacuum brazing the recommended radial joint clearance for gold base alloys fall within 0.000in – 0.002in (0.00mm-0.05mm) range.

Specifications

BVAU-9 conforms to: Unified Numbering System (UNS) P00354, American Welding Society (AWS) A5.8/A5.8M BVAu-9 Grade 1 and Grade 2

Available Forms

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

Compare With

  • AWS: BVAu-9

Specifications

  • Brazing Temperature Range High: 1950 F / 1066 C
  • Brazing Temperature Range Low: 1900 F / 1038 C
  • Liquidus: 1850 F / 1010 C
  • Solidus: 1814 F / 990 C

Composition

 

  • Cu: 65%
  • Au: 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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