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US 5,341,981 AGranted
Use of a cadmium-free silver alloy as brazing solder (III)
AssigneeDegussa AG
InventorsWolfgang Weise, Alexander Voelcker, Dieter Kaufmann, Willi Malikowski, Joerg Beuers, Harald Krappitz
Life of this patent
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Abstract
Cadmium-free brazing solders with working temperatures under 630.degree. C. containing 45 to 80 wt. % silver, 5 to 13 wt. % copper, 10 to 25 wt. % gallium, 8 to 20 wt. % zinc, and 0 to 5 wt. % indium and/or tin.
Claims12
A cadmium-free silver alloy brazing solder comprising 45 to 80 wt. % silver, 5 to 13 wt. % copper, 10 to 25 wt. % gallium, and 8 to 20 wt. % zinc.
Dependencies are inferred from the claim text.