Patent ID: 8097097
Filing Date: 2012-01-17
Classification: C21D,C22C

Abstract:
1. A stainless steel having a high hardness and excellent mirror-finished surface property, consisting essentially of, by mass, from more than zero to not more than 0.01% C (carbon), from 1.5 to less than 3.0% Si, from 0.05 to 0.8% Mn, 6.0 to 12.0% Cr, 4.0 to 10.0% Ni, from more than zero to not more than 10.0% Co, from more than zero to not more than 6.0% Cu, 1.0 to 3.0% Ti, from 0.07 to not more than 2.0% Al, optionally at least one element selected from the group consisting of three elements of not more than 1.0% Nb, not more than 1.0% Ta and not more than 0.1% Zr, less than 0.4% Mo, up to the limit of 0.01% N (nitrogen), and Fe and unavoidable impurities.