Title:
AUSTENITIC STAINLESS ALLOY MATERIAL
Document Type and Number:
WIPO Patent Application WO/2023/238851
Kind Code:
A1
Abstract:
The present invention provides an austenitic stainless alloy material which has excellent creep strength and excellent stress relaxation cracking resistance. An austenitic stainless alloy material according to the present disclosure contains, in mass%, 0.03% to 0.12% of C, 0.05% to 2.00% of Si, 0.05% to 3.00% of Mn, 0.03% or less of P, 0.010% or less of S, not less than 18.0% but less than 25.0% of Ni, not less than 22.0% but less than 30.0% of Cr, 0.04% to 0.80% of Co, 0.002% to 0.010% of Ti, 0.1% to 1.0% of Nb, 0.01% to 1.00% of V, not less than 0.001% but less than 0.030% of Al and 0.10% to 0.35% of N, while having a number density of precipitates having a circle-equivalent diameter of 0.5 µm to 2.0 µm of 5,000 per mm2 or more.
Inventors:
OTAKI NAO (JP)
HAMAGUCHI TOMOAKI (JP)
OSUKI TAKAHIRO (JP)
TANAKA KATSUKI (JP)
HAMAGUCHI TOMOAKI (JP)
OSUKI TAKAHIRO (JP)
TANAKA KATSUKI (JP)
Application Number:
PCT/JP2023/020959
Publication Date:
December 14, 2023
Filing Date:
June 06, 2023
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C22C38/00; C22C38/58; C21D8/10
Domestic Patent References:
| WO2021141107A1 | 2021-07-15 |
Foreign References:
| JP2021021093A | 2021-02-18 | |||
| JP2020164919A | 2020-10-08 | |||
| US20210348248A1 | 2021-11-11 |
Attorney, Agent or Firm:
ASCEND IP LAW FIRM (JP)
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