Patent ID: 8147983

Claim:
A tin-plated steel sheet comprising: a plating layer containing tin on at least one surface of a steel sheet; and a chemical conversion coating consisting of P, O, H and tin on the plating layer, wherein 1) a coated amount of the chemical conversion coating per surface is 1.0 to 50 mg/m 2 in terms of P, an atomic ratio Sn/P obtained from the intensity of a P2p peak and that of a Sn3d peak of the chemical conversion coating is in the range of 1.0 to 1.3, the intensities being measured at the surface thereof using an x-ray photoelectron spectroscopic method, 2) an atomic ratio 0/P obtained from the intensity of the P2p peak and that of an O1s peak is in the range of 4.0 to 9.0, and optionally, 3) a ratio I OH /I PO between reflection-absorbance intensity of a PO bond (I PO ) and reflection-absorbance intensity of an OH bond (I OH ) of an infrared absorption spectrum of the chemical conversion coating is in the range of 0.18 to 0.30.