COPPER ALLOY No. C72500 is a tin-bearing cupronickel. It has excellent hot and cold working characteristics. It is highly resitant to seawater corrosion. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-549. Producer or source: Copper and copper alloy mills.