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.PYROMET 718 is an alloy designed to display exceptionally high yeild, tensile and stress-rupture properties at temperatures up to 1300 F. (704 C).