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.SAE 1055 is a high-carbon oil or water-hardening tool and machinery steel recommended for hand tools, agricultural tools and machinery, shafts, springs and heavy-machinery parts.