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.Micro-Melt M62 tool steel is produced by the Carpenter Micro-Melt powder metal process and is superior in toughness to conventional AISI Type M42 at similar hardness levels.