Patent ID: 11572598

Abstract:
Provided is a martensite-based stainless steel component that has a nitride layer on a surface of a martensite-based stainless steel with a constituent composition including, in percent by mass, 0.25 to 0.45% of C, 1.0% or less of Si, 0.1 to 1.5% of Mn, 12.0 to 15.0% of Cr, and 0.5 to 3.0% of Mo, with a remainder being Fe and impurities, wherein hardness at a position of a depth of 0.1 mm from a surface of the martensite-based stainless steel component is 650 HV or more, and a number density of carbide with an equivalent circle diameter of 1 μm or more is 100 particles/10000 μm2 in a sectional structure at the position of the depth of 0.1 mm from the surface of the martensite-based stainless steel component. Also, a method for manufacturing the martensite-based stainless steel component is provided.