COLUMBIUM C-129Y is a columbium-tungsten-hafnium refractory alloy having good high temperature properties along with good heat and oxidation resistance. It is recommended for missiles, space craft and various high temperature applicatios. This datasheet provides information on composition, physical properties, elasticity, and tensile properties as well as creep and fatigue. It also includes information on forming, heat treating, machining, and joining. Filing Code: Cb-16. Producer or source: Wah Chang, a Teledyne Corporation.