FERRITIC STAINLESS STEEL SUPERIOR IN OXIDATION RESISTANCE

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PROBLEM TO BE SOLVED : To provide a ferritic stainless steel which has improved oxidation resistance, adequate electric conductivity, and a coefficient of thermal expansion close to those of an electrolyte and a ceramic member such as an electrode. SOLUTION : The ferritic stainless steel superior in oxidation resistance comprises, by mass%, 16.0 to 28.0% Cr, elements selected from Zr or one or more rare earth elements, in a range of 1.0% or less Zr, or 0.2% or less rare earth elements, 5.0% or less (including no addition) W and the balance Fe with impurities. The impurity elements are regulated to 0.05% or less C, 0.05% or less Si, 0.05% or less Mn, 0.05% or less Al, 1% or less Ni, 0.015% or less S, 0.03% or less P, 0.01% or less O, 0.05% or less N, 0.003% or less B and 0.0003% or less H. COPYRIGHT : (C)2010, JPO&INPIT