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.WRM Alloy C19400 has one of the best combinations of electrical conductivity, mechanical strength, forming properties, and stress-relaxation resistance characteristics of high-performance copper alloys for electronic applications.