Patent ID: 9689061
Date: 2017-06-27
CPC Classifications: C22C

Claim:
1. A tool steel which is a hot-work steel comprising: 0.26 to 0.55% by weight C; <2% by weight Cr; 0 to 10% by weight Mo; 0 to 15% by weight W; wherein a content of W and Mo in total amounts to 1.8 to 15% by weight; carbide-forming elements Ti, Zr, Hf, Nb, Ta with a content of from 0 to 3% by weight individually or in total; 0 to 4% by weight V; 0 to 6% by weight Co; 0 to 1.6% by weight Si; 0 to 2% by weight Mn; 0 to 2.99% by weight Ni; 0 to 1% by weight S; and remainder: iron and unavoidable impurities; and wherein the tool steel has a thermal conductivity which is set by metallurgically creating an internal structure of the tool steel in a defined manner such that carbidic constituents thereof have at least one of a defined electron and phonon density and a crystal structure thereof having a mean free length of a path for a phonon and electron flow that is determined by specifically created lattice defects, and wherein the hot-work steel has a thermal conductivity of more than 42 W/mK at room temperature.