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:
Jun. 06, 2017
Filed:
Mar. 28, 2012
Takayuki Nozaki, Tokyo, JP;
Manabu Takahashi, Tokyo, JP;
Nobuhiro Fujita, Tokyo, JP;
Hiroshi Yoshida, Tokyo, JP;
Shinichiro Watanabe, Tokyo, JP;
Takeshi Yamamoto, Tokyo, JP;
Takayuki Nozaki, Tokyo, JP;
Manabu Takahashi, Tokyo, JP;
Nobuhiro Fujita, Tokyo, JP;
Hiroshi Yoshida, Tokyo, JP;
Shinichiro Watanabe, Tokyo, JP;
Takeshi Yamamoto, Tokyo, JP;
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Abstract
This is a cold-rolled steel sheet includes, by mass %, C: 0.02% to 0.4%, Si: 0.001% to 2.5%, Mn: 0.001% to 4.0%, and Al: 0.001% to 2.0%. The sum of the Si content and the Al content is 1.0% to 4.5%. An average pole density of an orientation group from {100}<011> to {223}<110> is 1.0 to 6.5, and a pole density of a crystal orientation {332}<113> is 1.0 to 5.0. A microstructure includes, by an area ratio %, 5% to 80% of ferrite, 5% to 80% of bainite, and 2% to 30% of retained austenite. In the microstructure, by an area ratio %, martensite is limited to 20% or less, pearlite is limited to 10% or less, and tempered martensite is limited to 60% or less.