| 摘要 |
<p>There are provided ferritic stainless steels that contain no expensive elements such as Mo and W, are free from the oxidation resistance loss caused by addition of Cu, and thereby have excellent levels of oxidation resistance (including water vapour oxidation resistance), thermal fatigue property, and high-temperature fatigue property. More specifically, these ferritic stainless steels contain, in mass%, C at 0.015% or less, Si at 0.4 to 1.0%, Mn at 1.0% or less, P at 0.040% or less, S at 0.010% or less, Cr at 16 to 23%, Al at 0.2 to 1.0%, N at 0.015% or less, Cu at 1.0 to 2.5%, Nb at 0.3 to 0.65%, Ti at 0.5% or less, Mo at 0.1% or less, and W at 0.1% or less, the Si and the Al satisfying a relation Si (%) ‰¥: Al (%).</p> |
