Copper Alloy No.1 C84200 is a free-machining copper-tin-lead-zinc alloy for castings; it was formerly identified as 80-5-2.5-12.5 alloy. It has good casting characteristics, good machinability, moderate strength and ductility and good corrosion resistance. Among its many uses are ornamental fixtures, general hardware, plumbing goods, small gears and pipe fittings. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Cu-450. Producer or source: Copper alloy foundries. See also Alloy Digest Cu-446, October 1982.