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:
Nov. 03, 2015
Filed:
Aug. 23, 2012
Hideyuki Kimura, Fukuyama, JP;
Kaneharu Okuda, Kawasaki, JP;
Yasunobu Nagataki, Chiyoda-ku, JP;
Kenji Kawamura, Chiyoda-ku, JP;
Hideyuki Kimura, Fukuyama, JP;
Kaneharu Okuda, Kawasaki, JP;
Yasunobu Nagataki, Chiyoda-ku, JP;
Kenji Kawamura, Chiyoda-ku, JP;
JFE Steel Corporation, Tokyo, JP;
Abstract
A high strength hot-dip galvanized steel sheet has TS of 440 MPa or more and an average r value of 1.30 or more, where the absolute value of the planar anisotropy of the r value (Δr) is 0.20 or less. A chemical composition contains C: 0.010% or more and 0.04% or less, Si: more than 1.0% and 1.5% or less, Mn: 1.0% or more and 3.0% or less, P: 0.005% or more and 0.1% or less, S: 0.01% or less, sol. Al: 0.005% or more and 0.5% or less, N: 0.01% or less, Nb: 0.010% or more and less than 0.05%, Ti: 0.015% or more and 0.120% or less, and the remainder composed of Fe and incidental impurities, wherein (Nb/93)/(C/12) 0.20 and 0.005<C*≦0.020 are satisfied.