| 摘要 |
PURPOSE:To strengthen passivation without addition of large amounts of expen sive alloying elements and to improve corrosion resistance, by specifying respec tive amounts of C, Si, Cr, Ni, Mo, Cu, N, Al, Nb, S, P, etc. CONSTITUTION:This stainless steel has a composition consisting of, by weight, 0.005-0.1% C, 0.05-3% Si, 9-27% Cr, 1-22% Ni, 0.02-4% Mo, 0.01-3% Cu, 0.005-0.4% N, 0.01-0.8% of one or more elements among Al, Nb, Ti, and V, and the balance Fe. Moreover, in the above composition, respective amounts of S, P, and Mn as impurities are specified as shown in [P](ppm)+10X[S](ppm)<=400 and [Mn](%)+0.38X[S](ppm)<=11.9. In the above stainless steel, passivity is strengthened, and particularly, resistance of passivity to Cl<->, etc., is increased, so that corrosion resistance can be improved.
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