Cold rolled steel sheet

A cold rolled steel sheet comprising, on a surface thereof, an organic-inorganic composite film containing:

• an organic resin;
• and a crystalline layered material, wherein the organic-inorganic composite film has an average film thickness of 0.10 to 2.0 μm and contains 0.5 part or more by weight of the crystalline layered material as a solid with respect to 100 parts by weight of a solid of the organic resin,
• wherein the crystalline layered material is a layered double hydroxide represented by [M2+1-xM3+x(OH)2][An−]x/n.zH2O, wherein:
• M2+ is one or more of Mg2+, Ca2+, Fe2+, Ni2+, Zn2+, Pb2+, and Sn2+;
• M3+ is one or more of Al3+, Fe3+, Cr3+, 3/4Zr4+, and Mo3+;
• and
• An− is one or more of (C2O4)2−, I−, (BrO3)−, (IO3)−, (V10O28)6−, (Si2O5)2−, (ClO4)−, (CH3COO)−, [C6H4(CO2)2]2−, (C6H5COO)−, [C8H16(CO2)2]2−, n(C8H17SO4)−, n(C12H25SO4)−, n(C18H37SO4)−, and SiO44−,
• wherein 0<x≦0.33, 1≦n≦2, and 0.33≦z≦1, and
• wherein a base material of the cold rolled steel sheet has a strength exceeding 440 MPa.