Copper Alloy 720 is a copper-nickel alloy having high corrosion resistance and retention of strength at moderately elevated temperatures. It is recommended for heat exchangers, salt water piping and relays. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-168. Producer or source: Copper and copper alloy mills.