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.EMPIRE ISO-450 is a cast stainless steel with excellent corrosion resistance. A simple, single-step aging treatment develops high strength with good ductility and toughness.