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. C87400 is a copper-base casting alloy containing nominally 14% zinc and 3.5% silicon. It possesses a combination of high strength, good ductility and good-to-excellent resistance to corrosion. This alloy cannot be hardened nor strengthened by any thermal treatment. It is used for numerous applications such as bearings, gears, impellers and valve stems.