AISI 1140 is resulfurized carbon steel. It contains nominally 0.85% manganese and a range of 0.08-0.13% sulfur to furnish tree machining characteristics. Its hardenability is relatively low. Its ductility and toughness are fairly good in the longitudinal direction but tend to be low in the transverse direction. It is recommended highly for high-production automatic-machine products. Among its many applications are splined shafts, screws, bolts, light-duty gears and tool holders. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: CS-101. Producer or source: Carbon steel mills.