Abstract Armco 410 Cb is a modified Type 410 corrosion resistant steel by the addition of columbium. It is extremely tough and impact resistant. It is a hardenable grade but less sensitive to tempering variables than Type 410. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fracture toughness, creep, and fatigue. It also includes information on low and high temperature performance, and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: SS-145. Producer or source: Armco Inc., Eastern Steel Division. See also Alloy Digest SS-261, October 1971.