| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface treated steel sheet for cans usable for DI can, food can, beverage can and the like, particularly, a tin plated steel sheet excellent in workability, coating adhesion, yellowing resistance and rust prevention. SOLUTION: This surface treated sheet is characterized by having a chemical conversion coating containing P and Sn on the upper layer of tin plated layer formed on the surface of a steel sheet, in which P content in the above chemical conversion coating is 0.5-100 mg/m2 as the coating weight of P, and Sn content in the above coating is in the range of 0.01-60 as the ratio of its coating weight to P, and moreover, having a silane coupling layer on the upper layer of the above chemical conversion coating, in which the coating weight of the above silane coupling layer is in the range of 0.1-250 mg/m2 as the coating weight of Si.
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