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.FIREDIE 9 is a chromium-molybdenum-cobalt hot-work steel. It has outstanding resistance to softening in elevated-temperature service; the cobalt gives this steel its superior heat resistance. Firedie 9 has excellent resistance to thermal shock; in fact, dies can be water cooled durin operation without fear of cracking. Among its many applications are forging dies, hot-extrusion mandrels, hot-shear blades, die-casting dies and hot punches.