Title:
STAINLESS STEEL AND MANUFACTURING METHOD THEREFOR, AND STAINLESS STEEL PRODUCT AND MANUFACTURING METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/057705
Kind Code:
A1
Abstract:
Provided are: a stainless steel having excellent cold workability and a manufacturing method therefor; and a stainless steel product for which surface hardness is sufficiently high and for which corrosion resistance against acids, particularly non-oxidative acids, is excellent and a manufacturing method therefor. Provided are the stainless steel and the manufacturing method therefor, said steel having a component composition, in terms of % by mass, of 0.18-0.25% of C, 0.1-1.5% of Si, 0.35-1.5% of Mn, 0.04% or less of P, 0.01% or less of S, 0.05-0.20% of Ni, 12.5-14.6% of Cr, 1.5-3.0% of one or both of Mo and W according to the relational expression (Mo + 1/2W), 1.0-3.0% of Cu, and 0.03-0.10% of N, the remainder being Fe and impurities. Further provided are the stainless steel product and the manufacturing method therefor, said stainless steel product being obtained by quenching and tempering the foregoing stainless steel.
Inventors:
FUKUMOTO KENTARO (JP)
Application Number:
PCT/JP2023/026330
Publication Date:
March 21, 2024
Filing Date:
July 18, 2023
Export Citation:
Assignee:
PROTERIAL LTD (JP)
International Classes:
C22C38/00; C21D1/06; C21D8/00; C21D9/00; C22C38/44
Foreign References:
| JP2000336461A | 2000-12-05 | |||
| JPH10110248A | 1998-04-28 | |||
| JP2004099973A | 2004-04-02 | |||
| JP2021143388A | 2021-09-24 | |||
| JP2019518609A | 2019-07-04 |
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