Armco 11 Cr-Cb stainless steel has higher silicon content and is dual stabilized with titanium and columbium (niobium). The alloy is designed for use in automotive exhaust systems and should be considered where the performance of AISI Type 409 stainless steel is marginal. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as creep and fatigue. It also includes information on corrosion resistance as well as joining. Filing Code: SS-690. Producer or source: Armco Inc., Specialty Steels Division.