A steel sheet has a predetermined chemical composition, and a surface exhibits an absorption peak at which a reflectance is not less than 50% nor more than 85% in a range of wave numbers of 1200 cm−1 to 1300 cm−1 by a Fourier transform-infrared spectroscopy analysis by a reflection absorption spectrometry method, and does not exhibit an absorption peak in a range of wave numbers of 1000 cm−1 to 1100 cm−1, or exhibits an absorption peak at which a reflectance is 85% or more in the range of wave numbers of 1000 cm−1 to 1100 cm−1, wherein Ni of 3 mg/m2 to 100 mg/m2 adheres to the surface.