Hot-Strength Hardness
Tools that work with hot metals (pressure-melting moulds, forging dies, etc.) and high speed shear blades are heated during work. For such reason, these tools must be manufactured with steels that show high hardness at elevated temperatures, and resist the heat-induced softening effect.
This is achieved adding certain anneal-retardant elements to the steel, such as Chrome, Vanadium, Molybdenum, Tungsten and Cobalt.
