PERMANICKEL is an age-hardenable nickel alloy having high strength and high corrosion resistance in addition to high heat resistance. It is magnetic at room temperature in all conditions. 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, joining, and surface treatment. Filing Code: Ni-20. Producer or source: The International Nickel Company Inc..