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Title:
HIGH-YIELD-RATIO ULTRA-HIGH-STRENGTH STEEL SHEET HAVING EXCELLENT THERMAL STABILITY, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2022/139190
Kind Code:
A1
Abstract:
The present invention relates to an ultra-high-strength steel sheet and a manufacturing method therefor, and, more specifically, to: a steel sheet having excellent thermal stability to have a high yield ratio and ultra-high strength even after heat treatment at a relatively low temperature; and a manufacturing method therefor.

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Inventors:
BANG CHAN-WOO (KR)
KIM SUNG-IL (KR)
NA HYUN-TAEK (KR)
Application Number:
PCT/KR2021/017014
Publication Date:
June 30, 2022
Filing Date:
November 18, 2021
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
POSCO (KR)
International Classes:
C22C38/38; C21D8/02; C21D9/46; C22C38/22; C22C38/24; C22C38/26; C22C38/28; C22C38/32
Foreign References:
KR20190076788A2019-07-02
KR20160089316A2016-07-27
KR101736620B12017-05-17
JP2014218692A2014-11-20
KR20190075589A2019-07-01
KR100358939B12003-01-24
KR101290382B12013-07-26
KR100962745B12010-06-10
KR101246390B12013-03-21
Other References:
See also references of EP 4265782A4
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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