Abstract: A method for producing steel sheets, in particular for body shell sheets of vehicles, in which a steel alloy of a desired composition is melted, poured, and then rolled into sheet form, the steel alloy being an “interstitial free” steel (IF steel) and the steel sheet being annealed after the rolling and subsequently provided with a metallic anti-corrosion coating and then dressed, wherein in order to achieve a low Wsa value with the narrowest possible spread, a niobium content of >0.01% by weight, preferably >0.011% by weight, is added to the alloy.

Abstract: A method for producing steel sheets, in particular for body shell sheets of vehicles, in which a steel alloy of a desired composition is melted, poured, and then rolled into sheet form, the steel alloy being an interstitial free steel (IF steel) and after the rolling, the steel sheet being annealed and dressed and then provided with a metallic anti-corrosion coating by means of an electrolytic process or by means of vapor deposition, wherein in order to achieve a low Wsa value with the narrowest possible spread, a niobium content of >0.01% by weight, preferably >0.011% by weight, is added to the alloy of the steel.

Abstract: A method for producing steel sheets, in particular for body shell sheets of vehicles, in which a steel alloy of a desired composition is melted, poured, and then rolled into sheet form, the steel alloy being a bake-hardening steel (BH steel) and the steel sheet being annealed after the tolling and subsequently provided with a metallic anti-corrosion coating and then dressed, wherein in order to achieve a low Wsa value with the narrowest possible spread, a niobium content of >0.01% by weight, preferably >0.011% by weight, is added to the alloy.

Abstract: In a method of treating one-side electrogalvanized steel sheets, the uncoated side is contacted with an aqueous pickling solution containing a water-soluble hydroxycarboxylic acid and a water-soluble peroxo compound. In this way, extremely resistant mixed oxides are separated from one-side electrogalvanized sheets, which, otherwise, would lead to stripy yellowish and brownish stains on the uncoated steel surface. In addition, the new metal surface formed is passivated.