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.Mallory 22 is a high strength, high conductivity copper-base alloy supplied in the form of forgings. It is heat treatable and is recommended for resistance welding electrodes.