Langalloy 400 is a nickel-copper alloy for general use. It has an excellent combination of high strength, ductility, and corrosion resistance. The Curie temperature of the alloy is close to room temperature and varies with slight compositional changes. Langalloy 400 has been used as marine fasteners for a long time. This datasheet provides information on physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming and machining. Filing Code: Ni-651. Producer or source: Langley Alloys.