Title:
AUSTENITIC STEEL WITH EXCELLENT HIGH-TEMPERATURE STRENGTH
Document Type and Number:
WIPO Patent Application WO/2018/097604
Kind Code:
A1
Abstract:
The present invention relates to austenitic steel, which can realize high-temperature properties equal to or greater than conventional heat-resistant stainless steel, while replacing nickel (Ni), which is an expensive alloy element rich in a heat resistant stainless steel used at a very high temperature such as for a turbocharger, with a low-cost alloy element. The austenitic steel according to the present invention comprises 0.4 to 0.5 wt% of C, 1.0 to 2.0 wt% of Si, 5.0 to 8.0 wt% of Mn, 13.5 to 16.5 wt% of Ni, 23 to 26 wt% of Cr, the remainder being Fe and other unavoidable impurities, wherein the ratio CMn/CNi of the Mn content to the Ni content in the alloy element is maintained in the range of 0.3 to 0.9.
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Inventors:
KIM HYEUNG-JUN (KR)
JANG SEONG-SIK (KR)
KIM GI-YONG (KR)
LEE SUNG-HAK (KR)
JUNG SEUNG-MUN (KR)
JO YONG-HEE (KR)
JANG SEONG-SIK (KR)
KIM GI-YONG (KR)
LEE SUNG-HAK (KR)
JUNG SEUNG-MUN (KR)
JO YONG-HEE (KR)
Application Number:
PCT/KR2017/013371
Publication Date:
May 31, 2018
Filing Date:
November 22, 2017
Export Citation:
Assignee:
POSTECH ACAD IND FOUND (KR)
KEYYANG PREC CO LTD (KR)
KEYYANG PREC CO LTD (KR)
International Classes:
C22C38/58; C22C38/02; C22C38/34
Foreign References:
| JPH05148591A | 1993-06-15 | |||
| JPH11323479A | 1999-11-26 | |||
| JP2014208875A | 2014-11-06 | |||
| KR100428572B1 | 2004-04-28 | |||
| KR100766251B1 | 2007-10-12 |
Attorney, Agent or Firm:
IAM PATNET FIRM (KR)
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