| 简介 |
PROBLEM TO BE SOLVED : To provide ferritic stainless steel for an alcohol fuel reformer, which enhances steam oxidation resistance and red scale resistance by including Si and Al, and has superior thermal fatigue characteristics. SOLUTION : The ferritic stainless steel contains, by mass%, 8-25% Cr, 0.03% or less C, 0.03% or less N, 0.10-2.5% Si, 1.5% or less Mn, 0.008% or less S, and 4.0% or less Al, and one or more of Y, REM (rare earth metals), and Ca, in amounts of 0.001-0.1% in total, as needed, while a value A defined by A=Cr+5(Si+Al) is adjusted to a range of 13-60; and may further contain one or more of 0.05-0.80% Nb, 0.03-0.50% Ti, 0.1-4.0% Mo, and 0.1-4.0% Cu. COPYRIGHT : (C)2003, JPO |
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