High-strength steel having high yield ratio and excellent durability, and method for manufacturing same

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United States of America Patent

PATENT NO 12049687
APP PUB NO 20220389548A1
SERIAL NO

17773401

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Abstract

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Thick high-strength steel having a high yield ratio and excellent durability, and a method for manufacturing same are provided. The thick high-strength steel having a high yield ratio and excellent durability of the present invention comprises, in percentage by weight, C: 0.05 to 0.15%, Si: 0.01 to 1.0%, Mn: 1.0 to 2.3%, Al: 0.01 to 0.1%, Cr: 0.005 to 1.0%, P: 0.001 to 0.05%, S: 0.001 to 0.01%, N: 0.001 to 0.01%, Nb: 0.005 to 0.07%, Ti 0.005 to 0.11%, Fe and unavoidable impurities.

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Patent Owner(s)

Patent OwnerAddress
POSCOGYEONGSANGBUK-DO 790-300

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kim, Sung-Il Gwangyang-si, KR 71 314
Na, Hyun-Taek Gwangyang-si, KR 24 23

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