NICLOY 400 is a nickel-copper, solid-solution alloy which is utilized in numerous applications because of its good mechanical strength and overall excellent resistance to corrosion. Among its many uses are pump parts, marine fixtures, oil production and refining equipment, heat exchangers and numerous machined parts. 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: Ni-304. Producer or source: Babcock & Wilcox Company.