| 摘要 |
<p>The invention concerns a steel, particularly a steel for mould tools for plastic moulding, having the following chemical composition in weight-%:0.43 - 0.60 Cfrom traces to 1.5 Sifrom traces to 1.5 (Si+Al)0.1-2.0 Mn3.0-7.0 Cr 1.5-4.0 (Mo+ ), however max. 1.0 W0.30-0.70 Vmax. 0.1 of each of Nb, Ti and Zr max. 2.0 Comax. 2.0 Nibalance essentially only iron and unavoidable impurities. After hardening and high temperature tempering at 520-560°C, the steel has a hardness of 56-58 HRC.</p> |
