COLUMBIUM ALLOY SU-31 is a columbium-base alloy designed to operate at temperatures up to 1300 C (2372 F). This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep and fatigue. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cb-18. Producer or source: Kawecki Berylco Industries Inc..