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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 12760385 B1

PDFFull Text
Date of Patent:
Oct. 13, 2026

Filed:

Feb. 07, 2024

Seawater corrosion-resistant marine engineering steel and preparation method thereof

Applicants:

Wuhan University of Science and Technology, Wuhan, CN;

Wuke Xincai (Wuhan) Technology Co., Ltd., Wuhan, CN;

Wuke Composite Materials (Haikou) Technology Co., Ltd., Haikou, CN;

Sino-energy Huayuan Floating Wind Institute, Qingdao, CN;

Inventors:

Kaiming Wu, Wuhan, CN;

Zhihui Wang, Wuhan, CN;

Shaoguan Xiang, Wuhan, CN;

Assignees:

WUHAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, Wuhan, CN;

WUKE XINCAI (WUHAN) TECHNOLOGY CO., LTD., Wuhan, CN;

WUKE COMPOSITE MATERIALS (HAIKOU) TECHNOLOGY CO., LTD., Haikou, CN;

SINO-ENERGY HUAYUAN FLOATING WIND INSTITUTE, Qingdao, CN;

Attorney:

Bayramoglu Law Offices LLC

Primary Examiner:

Anthony M Liang

Int. Cl.
CPC ...
C21D 9/00 (2006.01); C21C 5/52 (2006.01); C21C 7/06 (2006.01); C21C 7/10 (2006.01); C21D 1/18 (2006.01); C21D 6/00 (2006.01); C21D 8/02 (2026.01); C21D 8/021 (2026.01); C21D 8/0221 (2026.01); C21D 8/0247 (2026.01); C22C 33/04 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/26 (2006.01); C22C 38/28 (2006.01);
U.S. Cl.
CPC ...
C21D 9/0081 (2013.01); C21C 5/5264 (2013.01); C21C 7/06 (2013.01); C21C 7/10 (2013.01); C21D 1/18 (2013.01); C21D 6/002 (2013.01); C21D 6/008 (2013.01); C21D 8/02 (2013.01); C21D 8/021 (2013.01); C21D 8/0226 (2013.01); C21D 8/0247 (2013.01); C22C 33/04 (2013.01); C22C 38/002 (2013.01); C22C 38/005 (2013.01); C22C 38/02 (2013.01); C22C 38/26 (2013.01); C22C 38/28 (2013.01); C21D 2211/005 (2013.01);
Abstract

A seawater corrosion-resistant marine engineering steel and a preparation method thereof are provided. The seawater corrosion-resistant marine engineering steel consists of the following chemical compositions in percentage by mass: C: 0.011-0.069%, Si: 0.11-0.29%, Cr: 1.51-1.99%, Nb: 0.02-0.05%, Zr: 0.01-0.02%, RE: 0.0034-0.02%, and the balance of Fe and inevitable impurities. The mass percentages of Zr element and RE element also satisfy the following formulas: 0.01%<Zr+RE<0.02%, and Zr/RE=1-3. The marine engineering steel is designed with cheap chemical compositions of low carbon, low silicon and medium chromium, and is completely free of valuable corrosion-resistant metal elements such as Ni and Cu. Instead of the traditional Al deoxidization technology, Si deoxidization assisted by Zr-RE composite deoxidization is used to form a fine, dispersed and uniform composite oxysulfide.

Find Patent Forward Citations

Wu, Kaiming. (2026). Seawater corrosion-resistant marine engineering steel and preparation method thereof (U.S. Patent No. 12760385). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12760385

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