TOOL STEEL FOR HOT-WORKING SUPERIOR IN EROSION RESISTANCE, AND DIE MEMBER

摘要

PROBLEM TO BE SOLVED: To provide a tool steel for hot-working superior in erosion resistance while keeping the adequate toughness and the heat check resistance.;SOLUTION: The tool steel for hot-working has a composition consisting, by wt.%, of 0.10-0.35% C, less than 0.80% Si, 3.0% or less Mn, 2.0% or more but less than 7.0% Cr, 0.3-5.0% 1/2W+Mo, less than 0.5% V, more than 0.05% but 0.50% or less N, 0.20-0.60% C+N, 0.0100% or less O, 0.050% or less P, and 0.050% or less Al, and the balance substantially Fe.;COPYRIGHT: (C)2004,JPO