CARPENTER SILICON CORE IRON C is melted in an electric furnace to exacting chemical specifications. Also it is carefully controlled by tool-steel practice in rolling and annealing to produce a fine-grained magnetic core iron of uniform quality. It is especially well adapted for making components such as solenoid switches, armatures, pole pieces, relays and cores. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Fe-74. Producer or source: Carpenter.