Patent ID: 7588651

Claim:
Method for producing a steel product with a high yield strength, wherein a steel strip or sheet is produced from steel which contains (in % by weight): C: ≦1.00% Mn: 7.00 to 30.00% Al: 1.00 to 10.00% Si: >2.50 to 8.00% Al + Si: >3.50 to 12.00% B: <0.01% Ni: <8.00% Cu: <3.00% N: <0.60% Nb: <0.30% Ti: <0.30% V: <0.30% P: <0.01% and iron and unavoidable impurities as the remainder, which strip or sheet is cold rolled to form a cold rolled strip, from which the steel product is subsequently produced by cold forming that takes place at a degree of cold forming of 2.5 to 25%.