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.Koncor is an air hardening, non-deforming tool and die steel having good balance of wear resistance, strength, toughness and heat resistance. It is recommended for hot and cold working tools and dies.