| 摘要 |
PROBLEM TO BE SOLVED: To provide a ferritic stainless steel sheet for a vessel excellent in fatigue characteristic and to provide a manufacturing method for the same.SOLUTION: The ferritic stainless steel sheet for a vessel excellent in fatigue characteristic has a steel composition which includes, by mass, 0.01% or less C, 1% or less Si, 1% or less Mn, 0.04% or less P, 0.005% or less S, 0.1% or less Mo, 11%-19% Cr, 10×(C+N) or more and 0.3% or less Ti, 0.02-0.2% Al, 0.015% or less N and 0.0004%-0.0015% B, 0.0003% or more solid solution B, and the balance consisting of Fe and inevitable impurities. When an electrolytic etching with oxalic acid prescribed in JIS G 0571 is carried out, etch pits caused by a boride are 2×10pieces perμm or less on the grain boundaries. |
