| 摘要 |
PROBLEM TO BE SOLVED: To provide a sulfuric acid dew point corrosion resistant steel having improved hydrochloric acid resistance without deteriorating its sulfuric acid dew point corrosion resistance. SOLUTION: The sulfuric acid dew point corrosion resistant steel has a composition comprising, by mass, 0.01 to 0.12% C, 0.01 to 1.5% Si, 0.1 to 2.5% Mn,≤0.05% P, 0.005 to 0.03% S, 0.03 to 1.0% Cu, 0.002 to 0.7% Sb, 0.003 to 0.5% W and 0.005 to 0.5% Al, and the balance Fe with inevitable impurities, and in which C, Sb and W satisfy the relation in inequality (1); 2.5≤(W+Sb)/C ... (1) (wherein, W, Sb and C denote the content (mass%) of each component). COPYRIGHT: (C)2008,JPO&INPIT
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