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.ATMODIE 4 is an air-hardening steel containing high percentages of carbon and chromium. It possesses exceptional wear resistance which makes it ideally suited to long-run production requirements. Its strength is very high and its toughness is good when properly heat treated. Its wide range of applications includes can dies, coining dies, extrusion dies, slitters, roofing knives, burnishing tools and punches.