Resin coated steel plate suitable for thin-walled deep drawer cans and its steel plate

摘要

The present invention is intended to provide a resin coated steel plate suitable for thin-walled deep drawing and polishing applications excellent in workability, surface roughness and corrosion resistance, and a steel plate used therefor. In particular, it is intended to provide an excellent material for containers used in carbonated beverages, coffee, tea drinks and fruit beverage cans. For this reason, the material of the present invention is a plate and coated steel plate used for a resin coated steel plate suitable for thinning and deep squeezing application, and the composition of the master plate is C: 0.008 to 0.08%, Si u2266 0.05%, Mn u2266 0.9%, p.ltoreq. 0.04%, s.ltoreq. 0.04%, al: u2266 The feature is that the average crystal grain size of the original plate before the resin is coated is 8. Mu. M or less, the average surface roughness (RA) is 0.5. Mu. M or less, and the maximum surface roughness (Rmax) is 5. Mu. M or less.