Alnico-IV is an un-oriented permanent-magnet iron-base alloy. It is a general purpose alloy for use where space limitations make short magnets necessary. It is supplied in the as-cast or as-sintered condition. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on casting, heat treating, and machining. Filing Code: Fe-40. Producer or source: General Magnetic Corporation.