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.Copper Alloy No. 875 is a copper-base casting alloy for applications requiring a combination of high strength and good resistance to corrosion. It cannot be hardened or strengthened by heat treatment. Its many applications include valve parts, small propellers, gears and marine components.