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.MAR-M alloy 246 is a vacuum-cast nickel-base alloy combining precipitation hardening and solid solution strengthening. It has high rupture strength and adequate ductility in the recommended operating temperature range of 1200-1900 F.