COLD-WORK TOOL STEEL WITH EXCELLENT TEMPERING RESISTANCE

摘要

The present invention relates to a cold-work tool steel comprising 0.75-1.10 weight% of carbon; 0.3-1.2 weight% of silicon; 0.01-0.12 weight% of aluminum; 0.6 weight% or less of manganese; 6.5-8.5 weight% of chrome; 0.8-1.8 weight% of [Mo]+0.5[W]; 0.3-0.6 weight% of vanadium; 0.1-0.5 weight% of nickel; 0.8-3.5 weight% of copper; the balance of iron; and unavoidable impurities. The cold-work tool steel has improved toughness properties while obtaining enough hardness properties.