| abstract |
The invention relates to a higher-strength, cold-formable steel and to a steel sheet product produced from such a steel, in which an optimal combination of weldability and a low tendency toward delayed cracking as well as good strength and hot- and cold-formability are assured. 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 "V, Nb" group provided that: Nb: 0.01-0.5%, V: 0.01-0.5% and optionally Ti: 0.01-0.5%, and remainder being iron and unavoidable manufacturing-related impurities. |