Phytherm 55 is a 30 nickel balance iron alloy, and Phytherm 120 is a 30Ni-3Cu-2Cr-balance iron alloy. Both are soft magnetic alloys. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on forming. Filing Code: Fe-165. Producer or source: Aperam Alloys Imphy.