Armco Tran-Cor H-1 Electrical Steel, available in coils 0.011 in. (0.28 mm) thickness, offers an outstanding degree of grain orientation with resultant far lower core loss than possible with conventional grain-oriented electrical steels. It is used for transformer cores. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on heat treating and surface treatment. Filing Code: Fe-93. Producer or source: Armco Advanced Materials Company.