| 摘要 |
PROBLEM TO BE SOLVED: To provide a coated steel sheet provided with corrosion resistance and workability, and having excellent electromagnetic wave shielding properties even if a coated layer is thickened. SOLUTION: The coated steel sheet is characterized in that both the sides of a steel sheet comprising, by mass,≤30 ppm C, 0.06 to 0.15% Mn,≤0.015% P and 0.025 to 0.06% Ti, and the balance Fe with inevitable impurities are each provided with an alloyed hot dip galvanizing layer, and both the sides of the plated steel sheet are provided with at least two layers of chromium-free films, wherein the total film thickness in one side is 5 to 18μm, and the total film thickness in the other side is 0.3 to 1.0μm. COPYRIGHT: (C)2007,JPO&INPIT
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