Thyssenkrupp Steel Europe Ag

Julia Mura

Jens-Ulrik Becker

Thomas Heller

Stefan Myslowicki

Martin Norden

Thomas Gerber

Ilse Heckelmann

Nicolas Vives Diaz

A flat steel product is disclosed which is particularly suitable for the production of components for motor vehicle bodies by press-hardening, and which has insensitivity to cracking coupled with increased strength and has sufficient suitability for welding for incorporation into a welded construction. This combination of properties is achieved in accordance with the invention by virtue of the flat steel product having a core layer consisting of a steel alloyed with Mn, B and at least 0.3% by weight of C and having a tensile strength of more than 1500 MPa, and an outer layer cohesively bonded to the core layer. The C content of the outer layer is not more than 0.09% by weight. This flat steel product has, in the region of the outer layer, a tensile strength corresponding to not more than half the tensile strength of the steel of the core layer in the ready-hardened state, with the elongation A80 of the outer layer corresponding to at least 1.5 times the elongation A80 of the core layer in the ready-hardened state.

Sheet steel product, a steel component produced from such a sheet steel product, and body for a motor vehicle

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Dusseldorf, Germany

Julia Mura