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.LUKENS 80 is a heat treated low carbon, high manganese constructional steel with a minimum yield strength of 80,000 psi. It is recommended for heavy construction equipment. It has satisfactory toughness down to -250 F and good weldability.