A resin-coated steel sheet suitable for use in a thin-walled, deep-drawn, ironed can which is excellent with respect to processability, resistance to surface roughing and corrosion resistance, and a steel sheet to be used therefor, particularly an excellent material for use in a container such as a carbonated beverage can, a coffee/tea can, a fruit beverage can or the like. A raw steel sheet or a coated steel sheet for a resin-coated steel sheet suitable for use in a thin-walled, deep-drawn, ironed can and a coated steel sheet characterized in that the raw sheet has a composition that C: 0.008 to 0.08%, Si<=0.05%, Mn<=0.9, P<=0.04%, S<=0.04%, Al<=0.03%, N<=0.0035%, B<=0.0005-0.005%, the remainder being Fe and obligatory impurities, and has an average diameter of crystal grains of 8 mum or less, an average surface roughness (Ra) of 0.5 mum or less and a maximum surface roughness (Rmax) of 0.5 mum or less. |