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AssigneeArcelorMittal
InventorsThomas URIOS, Patrick CHOQUET, Sergey ERSHOV
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A coated steel substrate coated with a first coating including above 40 wt. % of chromium and optionally one or several elements chosen from yttrium, silicon, calcium, titanium, zirconium, vanadium, niobium and nickel in an amount below 10 wt. % for each element, the balance being chromium and a second coating including from 2 to 30 wt. % of Aluminum, from 10 to 40 wt. % of chromium and optionally one or several elements chosen from yttrium, silicon, calcium, titanium, zirconium, vanadium, niobium and nickel in an amount below 10 wt. % for each element, the balance being iron, the steel substrate including Cr≤2.0% by weight; a method for the manufacture of this coated steel substrate; a method for the manufacture of a coated hot steel product; a coated hot steel product and the use of a hot steel product.
1-28. (canceled)
A coated steel substrate comprising:
A steel product according to claim 22 or 23, wherein the steel product comprises below 15 wt. % of chromium in the first region extending from the steel surface.
A steel product according to anyone of claims 22 to 24, wherein the steel product is hot formed.
A steel product according to claim 25, wherein the steel product is hot rolled, hot extruded, hot stamped or hot bended
A steel product according to claim 26, wherein the steel product is chosen from:
Use of the steel product according to anyone of claims 22 to 27 or obtainable according to anyone of claim 19 or 21, for the manufacture of offshore structure, offshore wind power, marine current power, hull of a boat, coastal and port infrastructure, quay wall, underground structure, rail and anchorage.
Dependencies are inferred from the claim text.