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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. C91700 is a medium strength casting alloy. Formerly it was known as Nickel Gear Bronze and 861/2-12- 0-0-11/2; these names are no longer recommended. It has a good combination of strength, ductility and resistance to corrosion and wear. Its typical tensile strength is 60,000 psi in the as-cast condition. Typical applications include gears and worm wheels.