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.Carpenter Project 70+ Type 416 stainless steel is a modified version of Type 416 stainless steel with improved machinability when compared to conventional 416. The alloy is a hardenable ferritic chromium steel.