| 摘要 |
The final purpose of the present invention is to obtain high-hardness and high-toughness cutlery having excellent characteristics. In order to achieve the final purpose, an intermediate material for a stainless steel for cutlery, an annealed material, a cold rolled steel strip, and manufacturing processes for the same are provided. This intermediate material for a stainless steel for cutlery is a hot-rolled intermediate material to be subjected to annealing, said hot-rolled intermediate material having a composition that contains, in mass%, 0.46 to 0.72% of C, 0.15 to 0.55% of Si, 0.45 to 1.00% of Mn, 12.5 to 13.9% of Cr, 0 to 1.5% of Mo, and 0 to 0.012% of B with the balance being Fe and unavoidable impurities, and exhibiting a (diffraction peak area assignable to the fcc phase)/(diffraction peak area assignable to the bcc phase) ratio of 30 or less in the X-ray diffraction of a longitudinal section. The diffraction peak area assignable to the fcc phase is a sum total of diffraction peak areas assignable to the (200), (220) and (311) planes, while the diffraction peak area assignable to the bcc phase is a sum total of diffraction peak areas assignable to the (200) and (211) planes. |
