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.Chromium Copper-999 is a copper-chromium-silicon alloy which is softened by a high-temperature solution anneal and quench, and will acquire improved properties with a low-temperature precipitation heat treatment.