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.ALLOY 875 is an iron-chromium-aluminum electrical-resistance alloy with excellent resistance to oxidation at elevated temperatures. It was developed primarily for use as the heating element in industrial furnaces, kilns and other equipment where continuous operating temperatures up to 2350 F may be required.