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.Rotelloy 5 nominally contains 50% Co and has been specially developed as a high-strength rotor material for machines operating at high speeds. The alloy is less suitable for stator applications since it has higher losses than Rotelloy 3. In some cases, this can be overcome by the use of thinner strip.