| 摘要 |
PROBLEM TO BE SOLVED: To provide a steel for high speed cold working having excellent cold workability during working and exhibiting satisfactory hardness after working, and to provide a method for producing the steel for high speed cold working. SOLUTION: The steel for high speed cold working has a composition containing 0.03 to 0.6% C, 0.005 to 0.6% Si, 0.05 to 2% Mn,≤0.05% P,≤0.05% S and 0.008 to 0.04% N, respectively, and the balance iron with inevitable impurities, wherein the imputities satisfy≤0.001% Al,≤0.002% Ti,≤0.001% Nb,≤0.001% V,≤0.001% Zr,≤0.0001% B,≤0.0001% Ta and≤0.0001% Hf, and also satisfying 14[Al]/27+14[Ti]/47.9+14[Nb]/92.9+14[V]/50.9+14[Zr]/91.2+14[B]/10.8+14[Ta]/180.9+14[Hf]/178.5≤0.002%. COPYRIGHT: (C)2009,JPO&INPIT
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