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.Republic RSM-300 alloy is an 18% nickel-cobalt-molybdenum age-hardening steel designed to develop up to 300,000 psi yield strength with good toughness. It is recommended for landing gears extrusion dies, rocket motor cases, high-strength bolts, etc.