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:
Mar. 22, 2022
Filed:
Dec. 27, 2018
Nippon Steel Corporation, Tokyo, JP;
Hitoshi Furuya, Tokyo, JP;
Kentaro Watanabe, Tokyo, JP;
Keisuke Mori, Tokyo, JP;
Masakazu Asaba, Tokyo, JP;
Yoshiaki Suematsu, Tokyo, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
A nickel-containing steel plate according to an aspect of the present invention has a chemical composition within a predetermined range, in which an average coarse grain size of prior austenite which is defined as a simple average value of maximum values of equivalent circle diameters of prior austenite grains in each of ten visual fields having an area of 200 μm, measured at a ¼t position of the steel plate in a section formed by a rolling direction of the steel plate and a thickness direction of the steel plate is 20 μm or less, and a tensile strength is 690 MPa to 900 MPa.