Title:
AUSTENITIC STAINLESS STEEL HAVING EXCELLENT WORKABILITY AND ANTI-AGING CRACK RESISTANCE AND DRAWING PRODUCT USING SAME
Document Type and Number:
WIPO Patent Application WO/2019/039715
Kind Code:
A1
Abstract:
Disclosed, in the present invention, is austenitic stainless steel having excellent workability and anti-aging crack resistance that does not cause defects such as aging cracks or delayed fractures, etc. even when the austenitic stainless steel is applied to a design sink in which the radius of curvature of a sink corner is 50 mm or less. The austenitic stainless steel having excellent workability and anti-aging crack resistance, according to one embodiment of the present invention, comprises, in weight%: 0.01 to 0.04% of C; 0.1 to 1% of Si; 0.1 to 2% of Mn; 6 to 10% of Ni; 16 to 20% of Cr; 1 to 2% of Cu; 0.01 to 0.2% of Mo; 0.035 to 0.07% of N; and the balance being Fe and unavoidable impurities, wherein the austenite stabilization parameter (ASP) value is -3 or less and the work hardening exponent n in the range of true strain 0.3 to 0.4 satisfies the range of 0.4 to 0.5.
Inventors:
KIM SANG SEOK (KR)
PARK MI-NAM (KR)
JUNG HAN YONG (KR)
MIN HYUN WOONG (KR)
KIM YUNG-MIN (KR)
PARK MI-NAM (KR)
JUNG HAN YONG (KR)
MIN HYUN WOONG (KR)
KIM YUNG-MIN (KR)
Application Number:
PCT/KR2018/006853
Publication Date:
February 28, 2019
Filing Date:
June 18, 2018
Export Citation:
Assignee:
POSCO (KR)
International Classes:
C22C38/42; C22C38/02; C22C38/04; C22C38/44; C22C38/58
Foreign References:
| KR970010807B1 | 1997-07-01 | |||
| KR950009223B1 | 1995-08-18 | |||
| JPH07197200A | 1995-08-01 | |||
| JP2007031777A | 2007-02-08 | |||
| JP2008169423A | 2008-07-24 |
Attorney, Agent or Firm:
SELIM INTELLECTUAL PROPERTY LAW FIRM (KR)
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