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.AISI Type D3 is an oil-hardening cold-work tool and die steel containing high percentages of carbon and chromium. It has very good resistance to wear or abrasion and high compressive strength. It is a deep-hardening steel that hardens with very little change in size or shape. Type D3 is a general-purpose tool and die steel and, because of its high chromium content, it has fairly good corrosion-resisting characteristics.