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.Duraperm is a soft magnetic alloy which exhibits high mechanical hardness and abrasion resistance in combination with a very low coercive force. It is recommended for applications requiring flux from minimum magnetization forces.