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.GUTERL D-7 is a high-carbon, high-chromium, high-vanadium tool and die steel. It is air hardening and therefore offers an extremely high degree of dimensional stability in heat treatment. In the hardened condition it has extremely high resistance to abrasion and wear. Its many applications include blanking and cold-drawing dies, punches, burnishing tools, slitter knives and gages.