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:
Jul. 13, 2021
Filed:
Feb. 02, 2018
Jfe Steel Corporation, Tokyo, JP;
Naoki Takayama, Tokyo, JP;
Yusuke Terazawa, Tokyo, JP;
Yoshiaki Murakami, Tokyo, JP;
Kazukuni Hase, Tokyo, JP;
Yusaku Takemura, Tokyo, JP;
Yasuhiro Murota, Tokyo, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
Provided is an abrasion-resistant steel plate which has high hardness up to the mid-thickness part thereof although the steel plate is 50 mm or more, and can be manufactured at low cost. The abrasion-resistant steel plate has a specific chemical composition having DI* of 120 or more, where DI* is defined by the following Formula (1): DI*=33.85×(0.1×C)×(0.7×Si+1)×(3.33×Mn+1)×(0.35×Cu+1)×(0.36×Ni+1)×(2.16×Cr+1)×(3×Mo+1)×(1.75×V+1)×(1.5×W+1) . . . (1), has HBof 360 HBW10/3000 to 490 HBW10/3000, HBbeing a Brinell hardness at a depth of 1 mm from a surface, has a hardness ratio, HBto HB, of 75% or more, HBbeing a Brinell hardness at a mid-thickness position, and has a plate thickness of 50 mm or more.