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US 5,352,542 AGranted
Use of silver alloys as cadium-free brazing solder
AssigneeDegussa AG
InventorsAlexander Voelcker, Joerg Beuers, Sigurd Joensson, Dieter Kaufmann, Georg Ptaschek, Wolfgang Kaster
Life of this patent
Estimating the term…
Abstract
Cadmium-free brazing solders which also have working temperatures under 630.degree. C. containing 45 to 80 wt. % silver, 5 to 25 wt. % copper, 10 to 25 wt. % gallium, and 0.1 to 5 wt. % indium and/or tin.
Claims7
A cadmium-free silver alloy brazing solder comprising 45 to 80 wt. % silver, 5 to 25 wt. % copper, 10 to 25 wt. % gallium, and 0.1 to 5 wt. % indium and/or tin;
- wherein said solder has a working temperature of 530.degree. to 600.degree. C.
A cadmium-free silver alloy brazing solder consisting essentially of 45 to 80 wt. % silver, 5 to 25 wt. % copper, 10 to 25 wt. % gallium, and 0.1 to 5 wt. % indium and/or tin;
- wherein said solder has a working temperature of 530.degree. to 600.degree. C.
Dependencies are inferred from the claim text.