Precoated sheets for manufacturing press-hardened coated steel parts

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United States of America Patent

PATENT NO 9957582
SERIAL NO

15609841

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Abstract

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A cold-rolled sheet is provided. The cold-rolled sheet includes a steel substrate with a carbon content C0 between 0.07% and 0.5%, expressed by weight, and a metal pre-coating on at least the two principal faces of the steel substrate. The substrate has a decarburized area on the surface of each of the two principal faces. The depth p50% of the decarburized area is between 6 and 30 micrometers, and p50% is the depth at which the carbon content is equal to 50% of the content C0. The sheet does not contain a layer of iron oxide between the substrate and the metal pre-coating.

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Patent Owner(s)

Patent OwnerAddress
ARCELORMITTAL1160 LUXEMBOURG

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Drillet, Pascal Rozerieulles, FR 34 236
Puerta, Velasquez Juan David Metz, FR 5 55
Staudte, Jonas Montigny-les-Metz, FR 8 43

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