TIN-PLATED STEEL PLATE AND METHOD FOR PRODUCTION THEREOF

摘要

A tin-plated steel plate which comprises a steel plate having a surface roughness of 1.5 mum or less in terms of Ra, a Fe-Sn alloy layer formed on the surface of the steel plate, a tin plating layer having a coating percentage of more than 99 % and a plated amount of 5 to 20 g/m<2> formed on the Fe-Sn alloy layer, and a chemical coating film containing P and Si formed on the tin plating layer, wherein the chemical coating film has an attached amount for P of 0.5 to 10 mg/m<2> and that for Si of 3 to 30 mg/m<2>; and a method for producing the tin-plated steel plate which comprises immersing a steel plate having the plating layer provided thereon in a chemical treatment fluid containing a phosphorus ion and a silane coupling agent or applying the chemical treatment fluid on the steel plate having the plating layer provided thereon, and then heating the resulting steel plate for drying.