Metal treatment – Stock – Ferrous
Reexamination Certificate
2008-08-04
2011-11-08
Yee, Deborah (Department: 1733)
Metal treatment
Stock
Ferrous
Reexamination Certificate
active
08052807
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.
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English language translation of Office Action associated with Japanese Application No. 2000-40347, issued on Feb. 7, 2004, and the original Office Action by the Japanese Patent Office.
Fujita Nobuhiro
Hashimoto Koji
Kawasaki Kaoru
Sakamoto Shinya
Senuma Takehide
Baker & Botts LLP
Nippon Steel Corporation
Yee Deborah
LandOfFree
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