STEEL FOR KNIVES, STEEL FOR MARTENSITIC KNIVES, KNIFE, AND PRODUCTION METHOD FOR STEEL FOR MARTENSITIC KNIVES

摘要

Provided are: steel for knives, having a higher hardness and better corrosion resistance than conventional steel for knives; a knife; steel for martensitic knives; and a production method for same.　The steel for knives comprises a component composition containing, in mass%, 0.45%–1.00% C, 0.1%–1.5% Si, 0.1%–1.5% Mn, 7.5%–11.0% Cr, and 0.5%–3.0% of either Mo or W or a complex of both (Mo + W/2), with the remainder being Fe and unavoidable impurities. Also provided are steel for martensitic knives and a knife. A production method for steel for martensitic knives is also provided that includes a quenching temperature at quenching of 1,050–1,250°C, a processing temperature for subzero processing of no more than –50°C, and a tempering temperature at tempering of 100–400°C, and obtains steel for martensitic knives that has a hardness of at least 700 HV.