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.G-E Alloy J-1500 is a nickel-base alloy specifically designed for high strength and oxidation resistance in the 1000 to 1600 F. temperature range. It responds to a precipitation hardening thermal treatment.