UNISPAN 36 is a 36% nickel-iron alloy having low thermal expansion in a -400 F to +350 F range. It is recommended for parts in precision machinery and for applications where dimensional changes due to temperature variation must be minimized. 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: Fe-43. Producer or source: Cyclops Corporation.