Product Specifications


Copper-ABA Brazing Alloy is a high purity active braze alloy. Copper-ABA is alloyed - Copper, Silicon, Titanium, and Aluminum. Copper-ABA is primarily used to braze directly to ceramic surfaces without metallization. This includes all ceramics and ceramic composites and virtually all ferrous and non-ferrous metal surfaces including carbides and diamond. Copper-ABA allows for ceramic-to metal and ceramic-to-ceramic surfaces to be brazed without metalizing, firing, and electroplating producing vacuum-grade hermetically sealed assemblies.


Brazing Characteristics

Copper-ABA Copper Brazing Alloy can be successfully brazed onto all metallic and non-metallic surfaces. Such as Kovar, Nickel, Ceramic composites, Diamond, Graphite, Carbides, all Steels, Refractory Metals, Titanium, Copper, and Super Alloys. A minimum brazing temperature of 1875° F (1024° C) is recommended for furnace and vacuum applications. 



Copper ABA is produced in accordance to American Welding Society (AWS) A5.8 Specifications. 


Forms Available

Wire, Foil, Sheet, and Preformed shapes; rings, washers, discs, shims, specialty shapes. Two dimensional shapes can be Laser-cut and/or machined with EDM. Preform surface must be cleaned prior to brazing. 


Alloy Details

  • Brazing Temperature Range High: 1895° F / 1014° C
  • Brazing Temperature Range Low: 1776° F / 968° C
  • Liquidus: 1875° F / 1024° C
  • Solidus: 1756° F / 958° C

Compare With: 

  • Wesgo: Copper-ABA

Nominal Composition

  • Cu: 92.75% - Si: 3.0%
  • Al: 2.0% - Ti: 2.25%