FIELD: metallurgy.
SUBSTANCE: zinc coating layer is obtained by immersion into a zinc melt with aluminium and magnesium, containing from 1.0 or more to 22.0 or less wt % of aluminium, from 1.5 or more to 10.0 or less wt %. of magnesium, zinc is the rest. Said steel sheet with said zinc coating is contacted with steam within a closed vessel, wherein an oxygen concentration in the closed vessel is 13% or less, to obtain a steel sheet with blackened zinc coating. In an embodiment, before or after steel sheet contacting with steam, steel sheet forming is carried out.
EFFECT: steel sheet with durable blackened coating with excellent design, formability and corrosion resistance.
10 cl, 4 dwg, 19 tbl, 209 ex
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