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.ALNICO II is a general purpose permanent magnet alloy recommended for applications where better magnetic properties than Alnico I are desired. It is a high coercive force, high energy magnetic alloy.