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Ryerson offers cold drawn carbon hex bar in grades 1018, 1045, 12L14 and 1215 in a variety of sizes. The 1018 is a low carbon steel with strength and ductility suited for a variety of fabrication processes including welding and machining. The 1215 and 12L14 free machining carbon hex bar screw stocks are useful for machined parts requiring close finish tolerances, while 1045 carbon hex bar is found in axles, bolts, forged connecting rods, crankshafts, torsion bars and light gears, among other applications.