Copper Alloy No. 923 is a cast copper-tin-zinc-lead alloy known also as Leaded G Bronze or 87-8-1-4 alloy. This alloy possesses a good combination of strength, resistance to corrosion and machinability. It is a good alloy to withstand gas or liquid pressures. Applications include pump impellers, fittings and bearings. 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-355. Producer or source: Copper alloy foundries.