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.SUPER-MOTUNG, a molybdenum type of high-speed steel containing cobalt, possesses a combination of cutting and toughness properties superior to many grades of high-speed steels.