AM Au-75 Gold Brazing Alloy is used primarily on furnace or vacuum braze applications requiring low melting temperatures. Primarily used in the RF and Power Semi-Conductor industries. AM Au-75 provides a high-strength braze joint on metallized ceramics, Kovar, and Copper. AM Au-75 is resistant to fatigue stresses and exhibits excellent joint strength.
AM Au-75 Gold Brazing Alloy can be successfully brazed onto a wide range of low temperature applications requiring low vapor pressure. AM-Au-75 is less ductile than most other gold filler metals. A minimum brazing temperature of 1725 °F (355°C) is recommend for brazing applications and AM-Au-75 is not recommended without a protective cover or shielding gas.
Properties of Brazed Joints
AM Au-75 is manufactured to AWS Specifications
Foil, Atomized powder, Paste, Sheet, and Preformed shapes; washers, discs, shims, specialty shapes. Two dimensional shapes can be Laser-cut and machined with EDM though parts must be cleaned prior to brazing.
- Wesgo: Silcoro-75
- Wambraze: WB895
- Brazing Temperature Range High: 1743 F / 950 C
- Brazing Temperature Range Low: 1725 F / 940 C
- Liquidus: 1643 F / 895 C
- Solidus: 1625 F / 885 C
- Au: 75%
- Cu: 20%
- Ag: 5%