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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 10865458 B1

PDFFull Text
Date of Patent:
Dec. 15, 2020

Filed:

Aug. 25, 2016

Armor plate with 2000 mpa-graded tensile strength, and manufacturing method therefor

Applicant:

Baoshan Iron & Steel Co., Ltd., Shanghai, CN;

Inventors:

Xiaoting Zhao, Shanghai, CN;

Fengbin Li, Shanghai, CN;

Liandeng Yai, Shanghai, CN;

Hongbin Li, Shanghai, CN;

Assignee:

Baoshan Iron & Steel Co., Ltd., Shanghai, CN;

Attorney:

Thomas Horstemeyer, LLP

Primary Examiner:

Christopher S Kessler

Assistant Examiner:

Jiangtian Xu

Int. Cl.
CPC ...
C21D 9/42 (2006.01); C22C 38/54 (2006.01); C21D 8/02 (2006.01); F41H 5/04 (2006.01); C21D 6/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/42 (2006.01); C22C 38/44 (2006.01); C22C 38/50 (2006.01); F41H 5/02 (2006.01);
U.S. Cl.
CPC ...
C21D 9/42 (2013.01); C21D 6/004 (2013.01); C21D 6/005 (2013.01); C21D 6/008 (2013.01); C21D 8/02 (2013.01); C21D 8/0205 (2013.01); C21D 8/0226 (2013.01); C21D 8/0263 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/42 (2013.01); C22C 38/44 (2013.01); C22C 38/50 (2013.01); C22C 38/54 (2013.01); F41H 5/02 (2013.01); F41H 5/0442 (2013.01); C21D 2211/008 (2013.01);
Abstract

A bulletproof steel plate with a tensile strength of 2000 MPa grade and a Brinell Hardness of 600 grade and a manufacturing method thereof, characterized by that the chemical elements in mass percentage thereof being: 0.35-0.45% of C, 0.80-1.60% of Si, 0.3-1.0% of Mn, 0.02-0.06% of Al, 0.3-1.2% of Ni, 0.30-1.00% of Cr, 0.20-0.80% of Mo, 0.20-0.60% of Cu, 0.01-0.05% of Ti, 0.001-0.003% of B, and the balance being Fe and inevitable impurities. The tensile strength of the steel plate can reach a grade of 2000 MPa and its Brinell Hardness can reach a grade of 600.

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