FIELD: metallurgy.
SUBSTANCE: Al content in Al-Zn coating amounts 20-95 wt %. Ca or Ca and Mg content in Al-Zn coating amounts 0.01-10 wt %. The surface layer of the steel sheet within 100 microns from the surface of the base steel sheet just below Al-Zn coating contains the total oxide layer 0.06-1,0 g/m2 of the surface at least of one of Fe, Si, Mn, Al, P, B, Nb, Ti, Cr, Mo, Cu, and Ni.
EFFECT: sheet has a high corrosion stability and excellent appearance of the coating.
8 cl, 2 dwg, 4 tbl, 1 ex
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