| 摘要 |
PURPOSE:To provide superior resistance to corrosion by fuel to a steel sheet having a specified composition by forming an Ni underlayer and an Sn layer as two coating layers on one side of the steel sheet corresponding to the inside of a fuel vessel and a coating layer of a Pb-Sn or Zn alloy on the other side corresponding to the outside. CONSTITUTION:The composition of a steel sheet for a fuel vessel is composed of, by weight,<0.02% C, 3-20% Cr, 0.003-0.1% acid-sol. Al 0.03-0.5% one or more among Ti, Nb, Zr and V, <0.003% B and the balance Fe with inevitable impurities. An Ni underlayer having 0.01-1mum thickness and an Sn layer having 0.5-10mum thickness are formed as two coating layers on one side of the steel sheet corresponding to the inside of the fuel vessel. A coating layer of a Pb-Sn alloy, Zn or a Zn alloy having 1-10mum thickness is formed on the other side corresponding to the outside of the fuel vessel.
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