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.COOPER ALLOY 17SM is a chromium-nickel-molybdenum alloy steel having high corrosion resistance and good strength at elevated temperatures. It is similar to A. C. I. CF-8M alloy.