Patent · US Active

Flat steel product having improved processing properties

US11891676B2 · kind B2 · utility

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8Claims

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Assignee

ThyssenKrupp Steel Europe AG · DE

Inventors

Maria Köyer · Dortmund, DE
Fred Jindra · Lennestadt, DE
Dirk Czupryna · Duisburg, DE

Key dates

Filing date	Nov 1, 2022
Grant date	Feb 6, 2024
Priority date	—
Expiry date	Nov 1, 2042

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC21D2211/008
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A flat steel product for production of a sheet metal component by hot forming includes a steel substrate consisting of a steel including 0.1-3% by weight of Mn and optionally up to 0.01% by weight of B, an aluminium-based coating disposed on at least one side of the steel substrate. A coating here has an applied layer weight of 15-30 g/m2. In addition, the coating has an Al base layer consisting of 1.0-15% by weight of Si, optionally 2-4% by weight of Fe, 0.1-5.0% by weight of alkali metals or alkaline earth metals, and optional further constituents, the contents of which are limited to a total of not more than 2.0% by weight, and aluminium as the balance.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.