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:
Dec. 06, 2016
Filed:
Jul. 27, 2012
Hiroshi Shuto, Tokyo, JP;
Nobuhiro Fujita, Tokyo, JP;
Tatsuo Yokoi, Tokyo, JP;
Riki Okamoto, Tokyo, JP;
Kazuaki Nakano, Tokyo, JP;
Shinichiro Watanabe, Tokyo, JP;
Hiroshi Shuto, Tokyo, JP;
Nobuhiro Fujita, Tokyo, JP;
Tatsuo Yokoi, Tokyo, JP;
Riki Okamoto, Tokyo, JP;
Kazuaki Nakano, Tokyo, JP;
Shinichiro Watanabe, Tokyo, JP;
NIPPON STEEL AND SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
A high-strength cold-rolled steel sheet having excellent stretch flangeability and precision punchability containing predetermined components and a balance being composed of iron and inevitable impurities, in which in a range of ⅝ to ⅜ in sheet thickness from the surface of the steel sheet, an average value of pole densities of the {100}<011> to {223}<110> orientation group represented by respective crystal orientations of {100}<011>, {116}<110>, {114}<110>, {113}<110>, {112}<110>, {335}<110>, and {223}<110> is 6.5 or less, and a pole density of the {332}<113> crystal orientation is 5.0 or less, and a metal structure contains, in terms of an area ratio, greater than 5% of pearlite, the sum of bainite and martensite limited to less than 5%, and a balance composed of ferrite.