View Sample Alloy Digest Data Sheet (PDF)Since 1952, Alloy Digest has been the leading reference for materials property data on metals and alloys used throughout the world. Featuring graphs, charts and tables, these sheets give facts and figures on composition or characterization, physical and mechanical properties, heat treatment, and machinability.CMW 3 is an age-hardenable copper-base alloy combining high mechanical and electrical properties. The alloy is typically used for spot and seam welding cold and hot-rolled steels and coated materials, current carrying shafts and arms, back-up bars, back-up bars for arc welding, electrical current carrying structural parts, and springs. The alloy is available in both the cast and wrought forms.