| 摘要 |
PROBLEM TO BE SOLVED: To provide steel for solid oxide type fuel cell separator excellent in oxidation resistance at a high temperature and less in thermal expansion coefficient difference with an electrolyte.SOLUTION: Steel for solid oxide type fuel cell separator consists of C≤0.2 mass%, Si≤1.0 mass%, Mn≤1.0 mass%, 15.0≤Cr≤40.0 mass%, Ni≤2.0 mass%, Al≤1.0 mass%, 0.01≤Zr≤1.0 mass%, Y≤0.2 mass%, lanthanoid element≤0.2 mass%, 0.005≤Y+lanthanoid element≤0.2 mass% and 0.05≤B≤1.5 mass% and the balance Fe with inevitable impurities.SELECTED DRAWING: Figure 2 |
