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.UDIMET 718 is a nickel-base alloy that is precipitation hardenable. It exhibits exceptionally high yield strength up to 1300 F, excellent cryogenic properties down to -423 F and superior weldability even in the fully-aged condition. This unusual combination of characteristics makes it suitable for elevated-temperature applications in gas turbines and in critical components for missiles.