| 摘要 |
Provided is a ferritic stainless steel having a good thermal fatigue property and oxidation resistance while minimizing the contents of Mo, W, and Nb which are expensive elements and minimizing the content of Cu which deteriorates oxidation resistance and workability. A ferritic stainless steel comprises, in terms of % by mass, C: 0.020% or less, Si: 3.0% or less, Mn: 1.0% or less, P: 0.040% or less, S: 0.030% or less, Cr: 10.0% or more and less than 16.0%, N: 0.020% or less, Al: 1.4 to 4.0%, Ti: more than 0.15% and 0.5% or less, Ni: 0.05 to 0.5%, and the balance being Fe and unavoidable impurities, the ferritic stainless steel satisfying formula (1) below:
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒAl%/Cr% ‰¥ 0.14 ·····€ƒ€ƒ€ƒ€ƒ€ƒ(1)
where Al% and Cr% in the formula respectively denote an Al content and a Cr content (% by mass). |
