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.UMCo-50 is a cobalt-chromium-iron heat-resistant alloy with good resistance to thermal shock, oxidatoin, and corrosion by hot gases, slags and molten copper. These characteristics make it highly suitable for use in the metallurgical and glass industries.