AISI 1020 is a low carbon steel combining good machinability, workability, and weldability. It is used for case-hardened components and for a wide range of applications in the hot-worked, cold-worked, normalized or quenched-and-tempered conditions. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: CS-39. Producer or source: Carbon and alloy steel mills.