| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot-dip Al-plated steel sheet having high corrosion resistance to an environment in an automotive exhaust system. SOLUTION: The hot-dip Al-plated steel sheet superior in corrosion resistance for a material used in the automotive exhaust system comprises a steel sheet including, by mass%, 0.01% or less C, 0.4% or less Si, 0.7% or less Mn, 0.02% or less P, 0.015% or less S, 0.01% or less Al, 0.1% or less Cr, 0.1-0.5% Cu and the balance Fe with unavoidable impurities, and an Al-plated layer containing, by mass%, 50% or more Al on the surface of the steel sheet. Because the Al-plated steel sheet is inexpensive, the inexpensive material superior in corrosion resistance can be supplied for the exhaust system. COPYRIGHT: (C)2004,JPO&NCIPI
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