BVAu-9 Technical Data
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.
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.
BVAU-9 conforms to: Unified Numbering System (UNS) P00354, American Welding Society (AWS) A5.8/A5.8M BVAu-9 Grade 1 and Grade 2
Wire, strip, engineered preforms and specialty preforms per customer specification, powder and paste.
- AWS: BVAu-9
- 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
- Cu: 65%
- Au: 35%
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