High-Strength, Cold-Formable Steel and Flat Steel Product Made from Such a Steel

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United States of America Patent

APP PUB NO 20130209831A1
SERIAL NO

13807808

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Abstract

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High-strength, cold-formable steel and a flat steel product produced from such a steel, in which an optimal combination of weldability and a low tendency towards delayed cracking is ensured along with good strength and hot and cold deformability. In order to achieve this, a steel according to the invention contains (in % by weight) C: 0.1-1.0%, Mn: 10-25%, Si: up to 0.5%, Al: 0.3-2%, Cr: 1.5-3.5%, S: <0.03%, P: <0.08%, N: <0.1%, Mo: <2%, B: <0.01%, Ni: <8%, Cu: <5%, Ca: up to 0.015%, at least one element from the group “V, Nb” with the following proviso: Nb: 0.01-0.5%, V: 0.01-0.5% and optionally Ti: 0.01-0.5% and iron and unavoidable, production-related impurities as the remainder.

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Patent Owner(s)

Patent OwnerAddress
THYSSENKRUPP STEEL EUROPE AGKAISER-WILHELM-STRASSE 100 DUISBURG 47166

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Becker, Jens-Ulrik Duisburg, DE 20 114
Göklü, Sinasi Hattingen, DE 1 8
Höckling, Christian Duisburg, DE 6 9
Hofmann, Harald Dortmund, DE 40 410
Schirmer, Matthias Dusseldorf, DE 8 10
Thomas, Ingo Duisburg, DE 5 8

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