CARPENTER STAINLESS No. 440B is a hardenable high-carbon chromium steel designed to provide stainless properties with maximum hardness. It is equivalent to AISI Type 440B stainless steel. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties as well as fracture toughness. It also includes information on corrosion resistance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: SS-36. Producer or source: Carpenter.