ZnAlMg-coated metal sheet with improved flexibility and corresponding manufacturing process

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United States of America Patent

PATENT NO 12116673
APP PUB NO 20210310129A1
SERIAL NO

17347868

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Abstract

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A process for the manufacture of a pre-painted sheet. The process includes supplying a steel substrate, depositing a metallic coating on at least one face by hot-dipping of the substrate in a bath including 4.4% to 5.25% by weight aluminum and 0.3% to 0.56% by weight magnesium. The rest of the bath includes exclusively zinc, unavoidable impurities resulting from the process and optionally one or more additional elements including Si, Ti, Ca, Mn, La, Ce and Bi. The content by weight of each additional element in the metallic coating is less than 0.3% and the presence of nickel is excluded. The process further includes solidifying the metallic coating, surface preparation of the metallic coating and painting of the metallic coating. The present invention further provides a pre-painted sheet.

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Patent Owner(s)

Patent OwnerAddress
ARCELORMITTAL1160 LUXEMBOURG

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Ben, Saad Manel La Garenne Colombes, FR 5 4
Diez, Luc Maizieres les Mets, FR 18 82
Föjer, Gunhild Destelbergen, BE 4 3
Filou, Clémence Grivegnee, BE 3 2

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