HOT-ROLLED STEEL SHEET AND MANUFACTURING METHOD THEREFOR

Title:

HOT-ROLLED STEEL SHEET AND MANUFACTURING METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2024/019604

Kind Code:

A1

Abstract:

A hot-rolled steel sheet and a manufacturing method therefor are provided. The hot-rolled steel sheet of the present invention comprises, in wt%, 0.03-0.08% of C, 0.01-1.0% of Si, 1.0-2.0% of Mn, 0.01-0.1% of Sol.Al, 0.005-0.5% of Cr, 0.005-0.3% of Mo, 0.001-0.05% of P, 0.001-0.01% of S, 0.001-0.01% of N, 0.005-0.12% of Ti, 0.005-0.06% of Nb, 0.005-0.2% of V, 0.0003-0.003% of B, and the balance being Fe and inevitable impurities, and satisfies relational formula 1-2.

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Inventors:

KIM SUNG-IL (KR)
YI IL-CHEOL (KR)
LEE JE-WOONG (KR)

Application Number:

PCT/KR2023/095030

Publication Date:

January 25, 2024

Filing Date:

July 13, 2023

Export Citation:

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Assignee:

POSCO CO LTD (KR)

International Classes:

C22C38/38; C21D8/02; C22C38/00; C22C38/02; C22C38/06; C22C38/22; C22C38/24; C22C38/26; C22C38/28; C22C38/32

Foreign References:

JP2013133534A	2013-07-08
JP2015054983A	2015-03-23
KR101728789B1	2017-04-20
JP2008255484A	2008-10-23
JP2001020030A	2001-01-23

Attorney, Agent or Firm:

C&S PATENT AND LAW OFFICE (KR)

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