Copper Alloy No. 735 (Also called Nickel Silver 72-18) has excellent ductility and excellent resistance to corrosion. It is darkest in color of all the nickel silvers. Its applications include fishing reels and watch parts. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, and joining. Filing Code: Cu-290. Producer or source: Copper and copper alloy mills.