| 摘要 |
A ferritic stainless steel which comprises, in mass%, 0.020% or less of C, 0.025% or less of N, 1.0% or less of Si, 1.0% or less of Mn, 0.035% or less of P, 0.01% or less of S, 16.0-25.0% of Cr, 0.12% or less of Al, 0.05-0.35% of Ti, 0.0015% or less of Ca, and a remainder made up by Fe and unavoidable impurities and fulfills a requirement represented by formula (1), and in which little blackspots are produced in a welded part. BI = 3Al+Ti+0.5Si+200Ca≤0.8 (1) (In formula (1), Al, Ti, Si, Ca respectively represent the contents [mass%] of these components in the steel.) |
