Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
AUSTENITIC STAINLESS STEEL PROCESSED PRODUCT HAVING EXCELLENT SURFACE CHARACTERISTICS, AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2018/117480
Kind Code:
A1
Abstract:
An austenitic stainless steel processed product having excellent surface characteristics, and a manufacturing method therefor are disclosed. The disclosed austenitic stainless steel processed product comprises an austenitic stainless steel comprising, by wt%, 0.005-0.15% of C, 0.1-1.0% of Si, 0.1-2.0% of Mn, 6.0-8.0% of Ni, 16-18% of Cr, 0.1-4.0% of Cu, 0.005-0.2% of N, 0.01-0.2% of Mo, and the balance of Fe and other inevitable impurities, and a Ni surface negative segregation thereof defined by the following formula (1) is 0.6-0.9 and a martensite fraction thereof is 10-30%. (CNi-Min)/(CNi-Ave) ...... formula (1) Here, CNi-Min is the minimum concentration of Ni on the surface and CNi-Ave is the average concentration of Ni on the surface.

Inventors:
KANG HYUNG GU (KR)
SHIM JAE-HONG (KR)
JO GYU JIN (KR)
CHAE DONG CHUL (KR)
Application Number:
PCT/KR2017/014086
Publication Date:
June 28, 2018
Filing Date:
December 04, 2017
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
POSCO (KR)
International Classes:
C22C38/40; C21D1/18; C22C38/00; C22C38/02; C22C38/04; C22C38/42; C22C38/44
Foreign References:
JPH08103802A1996-04-23
JPH08300124A1996-11-19
JP3090148B22000-09-18
KR20160079998A2016-07-07
JP2007197821A2007-08-09
KR20130014069A2013-02-06
Other References:
See also references of EP 3561125A4
Attorney, Agent or Firm:
SELIM INTELLECTUAL PROPERTY LAW FIRM (KR)
Download PDF: