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 W2 is a water-hardening high-carbon tool steel recommended for general applications. Its vanadium content prevents austenite grain growth and improves its toughness and its resistance to fatigue and abrasion. It is shallow hardening and in sizes over 1/2-inch in diameter, it hardens selectively with a hard, abrasion-resistant surface supported by a softer and tougher core. These characteristics make it desirable for many types of impact tools.