Patent · US Active

High strength steel sheet having superior ductility

US7919194B2 · kind B2 · utility

7Cited by

0References

10Claims

0Family size

Assignees

JFE Steel Corporation · JP
Thyssenkrupp Steel AG · DE

Inventors

Kenji Kawamura · Fukuyama, JP
Taro Kizu · Tokyo, JP
Shusaku Takagi · Tokyo, JP
Kohei Hasegawa · Fukuyama, JP
Hiroshi Matsuda · Hiratsuka, JP
Akio Kobayashi · Tokyo, JP
Yasunobu Nagataki · Tokyo, JP
Yasushi Tanaka · Tokyo, JP
Thomas Heller · Pittsburgh, US
Brigitte Hammer · Voerde, DE
Jian Bian · Cologne, DE
Günter Stich · Bochum, DE
Rolf Bode · Wesel, DE

Key dates

Filing date	Feb 18, 2009
Grant date	Apr 5, 2011
Priority date	—
Expiry date	Jun 7, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/12972
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A high strength steel sheet and a method for manufacturing the same has superior phosphatability properties and hot-dip galvannealed properties besides a tensile strength of 950 MPa or more and a high ductility, and also having a small variation in mechanical properties with the change in annealing conditions.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.