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.CHROMAX Def. 520 is an iron-nickel-chromium alloy having high oxidation and heat resistance. It is recommended for operations up to 1900 F.