AM Au-4 Foil 82% Au / 18% Ni - NIORO AMS 4787 Rev. H BVAu-4 BAu-4 82% Gold 18% Nickel Foil

Uses 

AM Au-4 Gold Brazing Alloy is used on ferrous, non-ferrous, and super alloys. Known as the “Cadillac of Braze Alloys”, AM Au-4 primary applications include brazing of aero-engine components (heat exchangers), and aircraft fuel systems (nozzles and elliptical spray bars). AM Au-4 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-4 can also be examined after brazing to verify joint integrity and to certify to a CLASS-A Braze joint (AWS Specification). 

Brazing Characteristics 

AM Au-4 Gold Brazing Alloy can be successfully brazed onto a wide range of high temperature nickel & iron-based alloys including stainless steels, carbide, and Inconel. A minimum brazing temperature of 1800°F (980°C) is recommend 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-4 is not recommended for joining copper or copper alloys.