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FERRITIC STAINLESS STEEL FOR BIOFUEL SUPPLY SYSTEM PARTS, AND BIOFUEL SUPPLY SYSTEM PARTS
FERRITIC STAINLESS STEEL FOR BIOFUEL SUPPLY SYSTEM PARTS, AND BIOFUEL SUPPLY SYSTEM PARTS
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机译:用于生物燃料供应系统零件的铁素体不锈钢和生物燃料供应系统零件
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摘要
PROBLEM TO BE SOLVED: To provide ferritic stainless steel for parts having corrosion resistance to biofuel.;SOLUTION: The ferritic stainless steel for biofuel supply system parts contains, by mass, 0.03% or less of C, 0.03% or less of N, more than 0.1% and 1% or less of Si, 0.02% or more and 1.2% or less of Mn, 15% or more and 23% or less of Cr, 0.002% or more and 0.5% or less of Al, and one or both of Nb and Ti, and satisfies the following formulas (1): 8(C+N)+0.03≤Nb+Ti≤0.6 and (2): Si+Cr+Al+[Nb+Ti-8(C+N)]≥15.5 (wherein the symbols of elements show the content (mass%) of the respective elements). The ferritic stainless steel has a remaining portion consisting of Fe and inevitable impurities, and is formed on the surface with an oxide film containing 30% or more of Cr, Si, Nb, Ti and Al in total of cation fraction.;COPYRIGHT: (C)2013,JPO&INPIT
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