Lescalloy 410Cb is a modification of AISI Type 410 changed by the addition of niobium (columbium). This change provides for an increase in strength for structural applications. This datasheet provides information on composition, physical properties, hardness, and tensile properties as well as fracture toughness. It also includes information on forming, heat treating, machining, and joining. Filing Code: SS-808. Producer or source: Latrobe Steel Company.