logo

For the Inventor, By the Inventor

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.:

US 11111556 B1

PDFFull Text
Date of Patent:
Sep. 07, 2021

Filed:

Apr. 19, 2016

Abrasion-resistant steel plate and method of producing abrasion-resistant steel plate

Applicant:

Jfe Steel Corporation, Tokyo, JP;

Inventors:

Yusuke Terazawa, Tokyo, JP;

Naoki Takayama, Tokyo, JP;

Kenji Hayashi, Tokyo, JP;

Kazukuni Hase, Tokyo, JP;

Assignee:

JFE STEEL CORPORATION, Tokyo, JP;

Attorney:

Kenja IP Law PC

Primary Examiner:

Patricia L Hailey

Assistant Examiner:

Christopher D Moody

Int. Cl.
CPC ...
C21D 8/02 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/20 (2006.01); C22C 38/22 (2006.01); C22C 38/24 (2006.01); C22C 38/26 (2006.01); C22C 38/50 (2006.01); C22C 38/54 (2006.01); C22C 38/18 (2006.01); C22C 38/40 (2006.01); B22D 11/12 (2006.01); C22C 38/38 (2006.01); C22C 38/32 (2006.01); C22C 38/28 (2006.01); B22D 11/00 (2006.01); C21D 9/46 (2006.01); C22C 38/58 (2006.01); B22D 11/041 (2006.01); C21D 6/00 (2006.01); C22C 38/44 (2006.01);
U.S. Cl.
CPC ...
C21D 9/46 (2013.01); B22D 11/001 (2013.01); B22D 11/041 (2013.01); B22D 11/1206 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/0205 (2013.01); C21D 8/0226 (2013.01); C21D 8/0263 (2013.01); C22C 38/001 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/18 (2013.01); C22C 38/20 (2013.01); C22C 38/22 (2013.01); C22C 38/24 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C22C 38/32 (2013.01); C22C 38/38 (2013.01); C22C 38/40 (2013.01); C22C 38/44 (2013.01); C22C 38/50 (2013.01); C22C 38/58 (2013.01); C21D 2211/001 (2013.01); C21D 2211/008 (2013.01);
Abstract

An abrasion-resistant steel plate comprises: a specific chemical composition; and a microstructure in which a volume fraction of martensite at a depth of 1 mm from a surface of the abrasion-resistant steel plate is 90% or more, and a prior austenite grain size in a plate thickness central part at the mid-thickness of the abrasion-resistant steel plate is 80 μm or less, wherein hardness at a depth of 1 mm from the surface of the abrasion-resistant steel plate is 460 to 590 HBW 10/3000 in Brinell hardness, and a concentration [Mn] of Mn in mass % and a concentration [P] of P in mass % in a plate thickness central segregation area satisfy 0.04[Mn]+[P]<0.50.

Find Patent Forward Citations

Loading…