Columbium D43 is a columbium-base alloy with inhibited grain growth during prolonged exposure at high temperature. It is recommended for high temperature service. This datasheet provides information on composition, physical properties, microstructure, elasticity, and tensile properties as well as creep. It also includes information on high temperature performance as well as forming, heat treating, machining, joining, and surface treatment. Filing Code: Cb-9. Producer or source: E. I. Dupont de Nemours & Company Inc..