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.WATERDIE EXTRA is a high-quality water-hardening tool steel alloyed with chromium to give increased depth of hardened case with added resistance to abrasion. When quenched in water or brine, it develops a deep, uniform high-hardness case with a tough shock-dampening core. This steel gives outstanding performance in large-section tools and dies that demand the strength of an extra-deep hardened case backed by a tough core.