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 4222 is a copper-zinc alloy of the tin-brass family with a good combination of conductivity, strength, and forming characteristics. A typical application is in high-performance conductive springs.