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 AR-300 is a tough, wear-resistant, water quenched and tempered, fine-grain carbon steel. It contains enough copper to double the atmospheric corrosion resistance of carbon steel free from added copper.