COATED SUBSTRATE FOR PACKAGING APPLICATIONS AND A METHOD FOR PRODUCING SAID COATED SUBSTRATE

摘要

This invention relates to a coated substrate for packaging applications comprising a recrystallisation annealed single reduced steel substrate or a double reduced steel substrate which was subjected to recrystallisation annealing between the first and second cold rolling treatment, wherein one or both sides of the substrate is coated with an iron-tin alloy layer which contains at least 80 weight percent (wt.%) of FeSn (50 at.% iron and 50 at.% tin) and wherein the iron-tin alloy layer or layers are provided with a chromium metal chromium oxide coating layer produced by a trivalent chromium electroplating process, and wherein the thickness of the chromium metal chromium oxide coating layer corresponds to at least 20 mg Cr/m2 and a process for producing said coated substrate.