| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve ridging resistance in a ferritic stainless steel which forms two phases of α+γ in a hot-rolling temperature region. <P>SOLUTION: The ferritic stainless steel sheet excellent in ridging resistance contains, by mass, 0.001 to 0.30% C, 0.01 to 1.00% Si, 0.01 to 2.00% Mn, 0.050% or less P, 0.020% or less S, 11.0 to 22.0% Cr, 0.001 to 0.10% N, and the balance Fe with inevitable impurities, wherein Ap defined by formula (3) satisfies formula (2); and the amount of Sn satisfies formula (1); and has a metal structure being a ferrite single phase, wherein formula (1): 0.060≤Sn≤0.634-0.0082Ap, formuls (2): 10≤Ap≤70, formula (3): Ap=420C+470N+23Ni+9Cu+7Mn-11.5(Cr+Si)-12Mo-52Al-47Nb-49Ti+189, and Sn, C, N, Ni, Cu, Mn, Cr, Si, Mo, Al, Nb, and Ti each denote the content of each element. <P>COPYRIGHT: (C)2013,JPO&INPIT |
