| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of manufacturing an Fe-Cr-Al ferritic stainless steel excellent in thermal fatigue characteristic and high temperature oxidation characteristic. SOLUTION: The Fe-Cr-Al ferritic stainless steel has a composition consisting of, by weight, <=0.03% C, <0.5% Si, <=0.5% Mn, <=0.04% P, <=0.003% S, 15-20% Cr, <=0.03% N, 3-5% Al, >0.1-0.3% Nb, >0.1-0.3% Ti, and the balance Fe with inevitable impurities and containing, if necessary, 0.01-0.20%, in total, of one or >=2 kinds among rare earth elements. In this case, working strain equivalent to 0.3-1.0% rolling rate is applied to the cold rolled and annealed strip of this steel.
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