Product Specifications

Uses

AM Au-7 Gold Brazing Alloy is used on ferrous, non-ferrous, and super alloys and provides an extremely ductile, high-strength braze joint. AM Au-7 primary applications include brazing of aero-engine components (heat exchangers), and aircraft fuel systems (nozzles and elliptical spray bars). AM Au-7 alloy is also heavily used in electron tubes, vacuum tubes, and wave guides in the electronic industry. Uses also include medical applications, carbide, tube fabrication, and anywhere a critical braze joint is required. AM Au-7 can also be examined after brazing to verify joint integrity and to certify to a Class-A Braze joints (AWS Specification). 

 

Brazing Characteristics

AM Au-7 Gold Brazing Alloy can be successfully brazed onto a wide range of high temperature nickel & iron-based alloys including stainless steels, carbide, and Inconel. AM-Au-7 is more ductile than other gold/nickel filler metals and can successfully braze gaps up to .004” clearance. A minimum brazing temperature of 2065°F (1130°C) is recommended for furnace and vacuum applications and the use of high-temperature (Black) flux is required when brazing without a protective cover or shielding gas. AM Au-7 is not recommended for joining copper or copper alloys.

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Specifications

AM Au-7 conforms to the following specifications: AMS 4784, and American Welding Society (AWS) A5.8 BAu-7/BVAu-7.

 

Forms Available

Wire, Foil, Atomized powder, Paste, Sheet, and Preformed shapes; rings, washers, discs, shims, specialty shapes. Two dimensional shapes can be Laser-cut and machined with EDM though parts must be cleaned prior to brazing. 

 

Compare With:

  • Lucas Milhaupt: Premabraze 500
  • Morgan/Wesgo: Palniro-7
  • Prince Izant: Gold Braze 5025

Alloy Details

  • Brazing Temperature Range High: 2200 F / 1200 C
  • Brazing Temperature Range Low: 2065 F / 1130 C
  • Liquidus: 2060 F / 1125 C
  • Solidus: 2010 F / 1100 C 

Nominal Composition

  • Au: 50%
  • Ni: 25%
  • Pd: 25%
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