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 94B30 is a mild carbon, nickel-chromium-molybdenum-boron alloy steel having good hardenability, toughness, and shock resistance for heavy duty service. AISI 94B30H is the corresponding H-Steel which has specified hardenability limits with some modification of chemical ranges.