ALUMINUM-PLATED STEEL SHEET FOR FUEL TANK EXCELLENT IN CORROSION RESISTANCE, AND METHOD OF MANUFACTURING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an aluminum-plated steel sheet for exhibiting sufficient internal corrosion resistance, even when iron rust gets mixed in from the outside together with deteriorated fuel to bring very severe corrosive environment in a fuel tank interior, and to provide a method of manufacturing the same.SOLUTION: An aluminum-plated steel sheet for a fuel tank excellent in corrosion resistance has, on a steel sheet surface, 20-60g/mof Al-Si plated layer comprising Si: 6-11 mass% of average composition, with the remainder of Al and inevitable impurities, and an Si content is 5 mass% or less in a zone of 2 μm from a plated surface layer. A method of manufacturing the same is also disclosed.