| 摘要 |
The present invention relates to a tool steel, in particular a hot-work s teel, having the following composition: 0.26 to 0.55% by weight C; < 2% b y weight Cr; 0 to 10% by weight Mo; 0 to 15% by weight W; wherein the W and Mo contents in total amount to 1.8 to 15% by weight; carbide-forming element s Ti, Zr, Hf, Nb, Ta forming a content of from 0 to 3% by weight individuall y or in total; 0 to 4% by weight V; 0 to 6% by weight Co; 0 to 1.6% by weigh t Si; 0 to 2% by weight Mn; 0 to 2.99% by weight Ni; 0 to 1% by weight S; re mainder: iron and inevitable impurities. The hot-work steel has a significan tly higher thermal conductivity than known tool steels. |
