Title:
HPF MEMBER HAVING EXCELLENT DELAMINATION RESISTANCE, AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2016/190538
Kind Code:
A1
Abstract:
An HPF member having excellent delamination resistance and a preparation method therefor are provided. The present invention relates to an HPF member having excellent delamination resistance and having a hot dipped aluminized layer formed on the surface of a base steel sheet, wherein the base steel sheet comprises 0.18-0.25 wt% of C, 0.1-0.5 wt% of Si, 0.9-1.5 wt% of Mn, 0.03 wt% or less of P, 0.01 wt% or less of S, 0.01-0.05 wt% of Al, 0.05-0.5 wt% of Cr, 0.01-0.05 wt% of Ti, 0.001-0.005 wt% of B, 0.009 wt% or less of N and the balance of Fe and other impurities, the aluminized layer comprises a single soft diffusion layer comprising α-Fe with solid-solubilized Al, and the hardness of the diffusion layer is 300-600 (Hv).
Inventors:
KIM HEUNG-YUN (KR)
Application Number:
PCT/KR2016/003513
Publication Date:
December 01, 2016
Filing Date:
April 05, 2016
Export Citation:
Assignee:
POSCO (KR)
International Classes:
B21B1/38; C23C2/28; C22C38/38; C23C2/12; C23C2/20; C23C10/22
Foreign References:
| KR20130008657A | 2013-01-22 | |||
| JP2010018860A | 2010-01-28 | |||
| KR20100082537A | 2010-07-19 | |||
| KR20130132623A | 2013-12-04 | |||
| KR100878614B1 | 2009-01-15 |
Other References:
See also references of EP 3305938A4
Attorney, Agent or Firm:
C&S PATENT AND LAW OFFICE (Daelim Acrotel13 Eonju-ro 30-gil,Gangnam-gu, Seoul, KR)
Download PDF: