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.HAYNES ALLOY No. 150 is a cobalt-base alloy with excellent thermal shock resistance. It has a higher melting point than other cobalt-and nickel-base high-temperature alloys and resists high-temperature corrosion in air and air-sulfur dioxide atmospheres.