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.UNS No. T20812 is a low-carbon chromium-molybdenum-tungsten hot-work steel for general purposers. It is used for dies and tools that require high toughness. It has high hardenability and offers high resistance to softening in service at elevated temperatures. It also offers good resistance to heat checking and may be water cooled in service. It is suitable for hot-work applications involving severe conditions of shock and sudden temperature changes. Its many applications include hot shear blades, forging dies, extrusion dies, punches and other types of hot-work tools.