Highly stable, steel and steel strips or steel sheets cold-formed, method for the production of steel strips and uses of said steel
OwnerHarald Hoffmann, Bernhard Engl +3inventors
InventorsHarald Hoffmann, Bernhard Engl, Manfred Menne, Thomas Heller, Werner Zimmermann
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Abstract
A steel strip or sheet steel having good cold formability and high-strength is described, comprising a light steel having (in weight-percent) C: ≦1.00%, Mn: 7.00-30.00%, Al: 1.00-10.00%, Si: >2.50-8.00%, Al+Si: >3.50-12.00%, B: >0.00-<0.01%, as well as alternately Ni: <8.00%, Cu: <3.00%, N: <0.60%, Nb: <0.30%, Ti: <0.30%, V: <0.30%, P: <0.01%, with the remainder iron and unavoidable impurities.
Claims30
A light steel, having good cold formability and high strength, with the following composition (in weight-percent):
- 5 C:
- 23 1.00% Mn:
- 7.00-30.00% Al:
- 1.00-10.00% Si:
- >2.50-8.00% Al + Si:
- >3.50-12.00% B:
- >0.00-<0.01% as well as alternately Ni:
- <8.00% Cu:
- <3.00% N:
- <0.60% Nb:
- <0.30% Ti:
- <0.30% V:
- <0.30% P:
- <0.01%, with the remainder iron and unavoid- able impurities.
The light steel according to one of the preceding claims, characterized in that the Si content is >2.70 weight-percent.
The light steel according to one of the preceding claims, characterized in that the boron content is 0.002 weight-percent to 0.01 weight-percent, in particular 0.003 to 0.008 weight-percent.
Dependencies are inferred from the claim text.