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. 17, 2010
Filed:
Mar. 14, 2008
Naoki Yoshinaga, Futtsu, JP;
Nobuhiro Fujita, Futtsu, JP;
Manabu Takahashi, Futtsu, JP;
Koji Hashimoto, Futtsu, JP;
Shinya Sakamoto, Kimitsu, JP;
Kaoru Kawasaki, Himeji, JP;
Yasuhiro Shinohara, Futtsu, JP;
Takehide Senuma, Futtsu, JP;
Naoki Yoshinaga, Futtsu, JP;
Nobuhiro Fujita, Futtsu, JP;
Manabu Takahashi, Futtsu, JP;
Koji Hashimoto, Futtsu, JP;
Shinya Sakamoto, Kimitsu, JP;
Kaoru Kawasaki, Himeji, JP;
Yasuhiro Shinohara, Futtsu, JP;
Takehide Senuma, Futtsu, JP;
Nippon Steel Corporation, Tokyo, JP;
Abstract
The present invention provides a steel sheet excellent in workability, which may be used for components of an automobile or the like, and a method for producing the same. More specifically, according to one exemplary embodiment of the present invention, a steel sheet excellent in workability, including in mass, 0.08 to 0.25% C, 0.001 to 1.5% Si, 0.01 to 2.0% Mn, 0.001 to 0.06% P, at most 0.05% S, 0.001 to 0.007% N, 0.008 to 0.2% Al, at least 0.01% Fe. The steel sheet having an average r-value of at least 1.2, an r-value in the rolling direction of at least 1.3, an r-value in the direction of 45 degrees to the rolling direction of at least 0.9, and an r-value in the direction of a right angle to the rolling direction of at least 1.2.