Cold-workable, cadmium-free hard solder alloys - contain silver, copper, zinc and small gallium and/or indium quantities

摘要

Hard solder alloys contain, by wt. 50-70 (57-64)% Ag, 15-30 (18-25)% Cu and 0.1-8 (2-3)% Ga and/or In. The alloys can be rolled and used in the prodn. of solder layer-contg. semi-finished prods. The alloys are free from toxic Cd, have working temps. 665-695 degrees C, cold workability 70- to >90%, good flow properties and a fine-grained casting structure.