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STEEL WITH HIGH WEAR RESISTANCE, HARDNESS AND CORROSION RESISTANCE AND LOW THERMAL CONDUCTIVITY, AND USE OF SUCH A STEEL
STEEL WITH HIGH WEAR RESISTANCE, HARDNESS AND CORROSION RESISTANCE AND LOW THERMAL CONDUCTIVITY, AND USE OF SUCH A STEEL
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机译:具有高耐磨性,高硬度和耐腐蚀性,低导热性的钢,以及使用这种钢
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摘要
This invention relates to a steel having high wear resistance, a high degree of hardness, good corrosion resistance and/or low thermal conductivity. A hardness of a steel is at least 56 HRC in a hardened state. In order to obtain this hardness, in a microstructure of the steel in total at least 30% wt. of hard phases are present which in addition to TiC particles include further carbide particles, oxide particles or nitride particles. Content of the TiC particles in the steel is at least 20% wt. The hard-phase particles are embedded in a matrix which includes (in % wt.) 9.0-15.0% Cr, 5.0-9.0% Mo, 3.0-7.0% Ni, 6.0-11.0% Co, 0.3-1.5% Cu, 0.1-2.0% Ti, 0.1-2.0% Al, the remainder being iron and unavoidable impurities.
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