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.SPEED STAR is a fine-grained molybdenum-tungsten high-speed steel with an excellent combination of wear resistance and toughness. Among its many uses are lathe tools, drills, gear cutters and wood knives.