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 636 Alloy is a hardenable stainless steel designed for service temperatures up to 1200 F. High mechanical properties can be developed by heat treatment. It has good resistance to scaling and oxidation for continuous service at temperatures up to 1400 F.