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Cold work die steel is a kind of mold steel suitable for pressure processing of metal in cold state. This kind of steel has the characteristics of high hardness, high wear resistance, high toughness and appropriate corrosion resistance, so it is widely used in manufacturing various cold stamping dies, cold shearing dies, cold extrusion dies, cold heading dies, imprinting dies, etc. Cold work die steel is a kind of mold steel suitable for pressure processing of metal in cold state. This kind of steel has the characteristics of high hardness, high wear resistance, high toughness and appropriate corrosion resistance, so it is widely used in manufacturing various cold stamping dies, cold shearing dies, cold extrusion dies, cold heading dies, imprinting dies, etc. Molds, thread rolling dies, drawing dies and thread rolling dies, etc.