| 摘要 |
The invention relates to the use of a steel having the following chemical composition expressed in weight-%: 0.5 - 0.7 C, 0.1 - 1.0 Si; 3.5 - 5.5 Cr, 0.8 - 1.3 Mn, max 1.0 Ni, wherein Ni + Mn/2 = 0.3 - 1.8, 0.2 - 0.8 Mo, 0.1 - 0.4 V, balance essentially only iron and impurities and accessory elements in normal amounts, for motor-car body sheet pressing tools. |
