Oils storage container and method of manufacturing the same oils and storage container for corrosion-resistant steel

摘要

PROBLEM TO BE SOLVED: To provide an anti-corrosive steel material which is superior in corrosion resistance and is used for an oil storage container; a manufacturing method therefor; and the oil storage container.;SOLUTION: The anti-corrosive steel material for the oil storage container has a surface layer formed on the surface of the steel material. The surface layer comprises 0.3 to 20 mass% Cu, 0.3 to 20 mass% Ni, 5 to 20 mass% O, 0.3 to 10 mass% S and the balance Fe with unavoidable impurities, and has a thickness of 50 to 800 μm. The method for manufacturing the anti-corrosive steel material for the oil storage container includes immersing the steel material in a mixed solution of an aqueous solution and a powder of S to form the surface layer with the thickness of 50 to 800 μm on the steel material. Furthermore, the oil storage container is made by using the anti-corrosive steel material for the oil storage container.;COPYRIGHT: (C)2008,JPO&INPIT