High nitrogen steel with high strength, low yield ratio and high corrosion resistance for ocean engineering and preparation method therefor

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 11767581
APP PUB NO 20230115623A1
SERIAL NO

17966900

Stats

ATTORNEY / AGENT: (SPONSORED)

Importance

Loading Importance Indicators... loading....

Abstract

See full text

The present invention discloses a high nitrogen steel with high strength, low yield ratio and high corrosion resistance for ocean engineering, comprising the following chemical components by weight percentage: C≤0.01%, Si≤0.1%, Cr 17%-19%, Mn 14%-16%, Mo 1%-1.5%, Ti≤0.05%, N 0.45%-0.6%, P≤0.01%, S≤0.01%, O≤0.02%, and the balance of iron. The present invention also discloses a preparation method as follows: (1) raw material weighing; (2) ingot preparation, remelting and smelting; (3) solution and forging treatments; and (4) hot rolling and post-rolling treatment. A product provided by the present invention has high tensile strength, low yield ratio and high corrosion resistance. At the same time, the present invention does not need pressurized equipment in the preparation process, therefore the preparation method is simple, the cost is low, and the present invention is suitable for industrial popularization in China.

Loading the Abstract Image... loading....

First Claim

See full text

Family

Loading Family data... loading....

Patent Owner(s)

Patent OwnerAddress
NORTH CHINA UNIVERSITY OF SCIENCE AND TECHNOLOGYNO 21 BOHAI AVENUE CAOFEIDIAN DISTRICT TANGSHAN CITY HEBEI PROVINCE 063210 TANGSHAN CITY HEBEI PROVINCE 063210

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Li, Hao Tangshan, CN 560 4472
Liu, Jimeng Tangshan, CN 1 0
Wang, Shuhuan Tangshan, CN 2 117
Xue, Yuekai Tangshan, CN 1 0
Zhang, Cunshuai Tangshan, CN 1 0
Zhao, Dingguo Tangshan, CN 1 0

Cited Art Landscape

Load Citation

Patent Citation Ranking

Forward Cite Landscape

Load Citation

Maintenance Fees

Fee Large entity fee small entity fee micro entity fee due date
3.5 Year Payment $1600.00 $800.00 $400.00 Mar 26, 2027
7.5 Year Payment $3600.00 $1800.00 $900.00 Mar 26, 2031
11.5 Year Payment $7400.00 $3700.00 $1850.00 Mar 26, 2035
Fee Large entity fee small entity fee micro entity fee
Surcharge - 3.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 7.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge - 11.5 year - Late payment within 6 months $160.00 $80.00 $40.00
Surcharge after expiration - Late payment is unavoidable $700.00 $350.00 $175.00
Surcharge after expiration - Late payment is unintentional $1,640.00 $820.00 $410.00