Silver and Gold Brazing Alloys

More sophisticated brazing methods as well as the advent of new structural materials have posed difficult metal joining problems in the electronics, nuclear power, and aerospace industries. Certain of these, particularly in more critical applications, have been successfully solved by the use of gold-based brazing alloys, and this article reviews the present importance and potential scope of such alloys.

Silver Brazing Alloys

BAg-1

BAg-1 has the lowest melting range in joining ferrous, non-ferrous and dissimilar metals that have a close joint clearance requirement. We recommend a maximum brazing temperature of 1350°F.

BAg-1a

The properties of BAg-1a are similar to those of BAg-1 (AMS 4769) except BAg-1a has a narrower melt range for use on same base metals. We recommend a maximum brazing temperature of 1375°F.

BAg-2

BAg-2 has a broader melt range than BAg-1 (AMS 4769) which makes it suitable for larger gap clearance and easier filleting. We recommend a maximum brazing temperature of 1400°F.

BAg-3

BAg-3 is a universal alloy in the joining of carbide tool assemblies. Nickel addition improves corrosion resistance in marine environments and other caustic media. We recommend a maximum brazing temperature of 1400°F.

Other Silver Brazing Alloys used BAg-4, BAg-5, BAg-6, BAg-7, BAg-8, BAg-9, BAg-10, BAg-13, Bag-13a, BAg-18, BAg-19 etc..

Gold Brazing Alloys

BAu-2

BAu-2 is used to join steels, stainless steels, nickel based alloys and other materials, where ductility and resistance to oxidation or corrosion is necessary. Gold filler metals readily wet most base metals, including the super alloys, and are especially good for brazing thin sections due to their low interaction with the base metal. We recommend a maximum brazing temperature of 1850°F.

BAu-3

BAu-3 is used to join steels, stainless steels, nickel based alloys and other materials, where ductility and resistance to oxidation or corrosion is necessary. Gold filler metals readily wet most base metals, including the super alloys, and are especially good for brazing thin sections due to their low interaction with the base metal. We recommend a maximum brazing temperature of 1950°F.

BAu-4

BAu-4 is used to join steels, stainless steels, nickel based alloys and other materials, where ductility and resistance to oxidation or corrosion is necessary. Gold filler metals readily wet most base metals, including the super alloys, and are especially good for brazing thin sections due to their low interaction with the base metal. We recommend a maximum brazing temperature of 1840°F.

BAu-6

BAu-6 is used to join steels, stainless steels, nickel based alloys and other materials, where ductility and resistance to oxidation or corrosion is necessary. Gold filler metals readily wet most base metals, including the super alloys, and are especially good for brazing thin sections due to their low interaction with the base metal. We recommend a maximum brazing temperature of 2050°F.

Welding Products

Nickel Alloys

Titanium Alloys

Cobalt Alloys

Silver and Gold Brazing Alloys