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.CARPENTER O-1 is a nondeforming die steel that can be oil hardened safely even in intricate sections. It is made from billets that are 100% acid-disc inspected and ultrasonically tested to insure sound metal in the finished bars. It may be classified as a general-purpose tool and die steel. Among its many uses are dies for a variety of purposes, master tools, broaches and thread gages.