View Sample Alloy Digest Data Sheet (PDF)Since 1952, Alloy Digest has been the leading reference for materials property data on metals and alloys used throughout the world. Featuring graphs, charts and tables, these sheets give facts and figures on composition or characterization, physical and mechanical properties, heat treatment, and machinability.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.