The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 26, 2014
Filed:
Nov. 03, 2006
Takeshi Yokota, Kawasaki, JP;
Akio Kobayashi, Kawasaki, JP;
Kazuhiro Seto, Kawasaki, JP;
Yoshihiro Hosoya, Chiba, JP;
Thomas Heller, Duisburg, DE;
Brigitte Hammer, Voerde, DE;
Rolf Bode, Wesel, DE;
Günter Stich, Bochum, DE;
Takeshi Yokota, Kawasaki, JP;
Akio Kobayashi, Kawasaki, JP;
Kazuhiro Seto, Kawasaki, JP;
Yoshihiro Hosoya, Chiba, JP;
Thomas Heller, Duisburg, DE;
Brigitte Hammer, Voerde, DE;
Rolf Bode, Wesel, DE;
Günter Stich, Bochum, DE;
JFE Steel Corporation, , JP;
ThyssenKrupp Steel AG, , DE;
Abstract
A high strength steel, including about 0.05 to about 0.25% of C, less than about 0.5% of Si, about 0.5 to about 3.0% of Mn, not more than about 0.06% of P, not more than about 0.01% of S, about 0.50 to about 3.0% of Sol. Al, not more than about 0.02% of N, about 0.1 to about 0.8% of Mo, about 0.02 to about 0.40% of Ti, and the balance of iron and unavoidable impurities, wherein the steel has a structure formed of at least three phases including a bainite phase, and a retained austenite phase in addition to a ferrite phase having a composite carbide containing Ti and Mo dispersed and precipitated therein, wherein the total volume of the ferrite phase and the bainite phase is not smaller than 80%, the volume of the bainite phase is about 5% to about 60%, and the volume of the retained austenite phase is about 3 to about 20%.