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.FANSTEEL 61 METAL is a high-density, high-strength alloy developed for use as a spring material or for other elastic components that must operate under chlorinating or severe acid conditions.