FIELD: metallurgy.
SUBSTANCE: coated steel sheet contains the aluminium coating layer formed on one side or on both sides of the steel sheet, containing one or more elements in the total amount of 0.02 upto 2 wt %, selected from Mg, Ca, Sr, Li, Na and K, and 15 wt % Si or less, the rest is aluminium and impurities, and the surface coating layer applied to the aluminium coating layer and containing at least ZnO, at that the amount of the surface coating layer on one side of the steel sheet, in terms of metallic Zn, is from 0.3 up to 4 g/m2.
EFFECT: invention provides excellent lubricating capacity with less deposits and can improve the formability and productivity of hot stamping, and chemical conversion processing ability after hot pressing.
10 cl, 3 dwg, 3 tbl
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Authors
Dates
2017-10-11—Published
2014-04-14—Filed