Title:
LOW-SPECIFIC-GRAVITY CLAD STEEL SHEET HAVING EXCELLENT STRENGTH AND PLATEABILITY, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2020/032446
Kind Code:
A1
Abstract:
One aspect of the present invention relates to a low-specific-gravity clad steel sheet having excellent strength and plateability, the clad steel sheet comprising a base metal, and a clad material provided at both sides of the base metal, wherein the base metal is a ferritic-austenitic duplex lightweight steel sheet comprising, by wt%, 0.3-0.7% of C, 2.0-9.0% of Mn, 4.5-8.0% of Al and the balance of Fe and inevitable impurities, and the clad material is a ferritic carbon steel comprising, by wt%, 0.0005-0.2% of C, 0.05-2.5% of Mn and the balance of Fe and inevitable impurities.
Inventors:
KOO MIN-SEO (KR)
SONG TAE-JIN (KR)
SONG TAE-JIN (KR)
Application Number:
PCT/KR2019/009268
Publication Date:
February 13, 2020
Filing Date:
July 25, 2019
Export Citation:
Assignee:
POSCO (KR)
International Classes:
B32B15/18; B23K20/04; B32B15/04; B32B37/06; B32B37/10; B32B38/00; C22C38/04; C22C38/06; B23K103/16
Foreign References:
| KR20170075138A | 2017-07-03 | |||
| KR20090123229A | 2009-12-02 | |||
| CN106086658A | 2016-11-09 | |||
| KR20090038008A | 2009-04-17 | |||
| KR20070067950A | 2007-06-29 | |||
| KR20160082358A | 2016-07-08 | |||
| JP2009287114A | 2009-12-10 |
Other References:
See also references of EP 3835055A4
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (KR)
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