ALLOY 36 is an iron-36% nickel alloy with the lowest thermal coefficient of expansion among commercial alloys. It is recommended for applications that require very low dimensional changes with variations in temperature. Among many applications it is used for length standards, bimetals and tapes and wires for geodetic measurements. 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-55. Producer or source: Magnetics Specialty Metals Division.