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Title:
STEEL MATERIAL FOR SLIDING COMPONENTS AND PRODUCTION METHOD FOR STEEL MATERIAL FOR SLIDING COMPONENTS
Document Type and Number:
WIPO Patent Application WO/2023/080029
Kind Code:
A1
Abstract:
Provided is a steel material for sliding components that has excellent sliding properties and workability. The steel material for sliding components: comprises a steel material having 0.30%–0.60% by mass C content; has a structure that includes iron carbide and at least either tempered martensite or bainite; has a total, by volume fraction, of at least 80% tempered martensite and bainite and at least 2.0% iron carbide; and has a Vickers hardness Hv of 300–600. The volume fraction X of the iron carbide and the Vickers hardness Hv fulfill the relational expression (1).　X ≥ –0.065 × Hv + 36.5 (1). The unit for X is % and the unit for Hv is Hv.

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Inventors:
KIKUCHI NATSUMI (JP)
NISHIHARA KISON (JP)
ABE TATSUHIKO (JP)
Application Number:
PCT/JP2022/039894
Publication Date:
May 11, 2023
Filing Date:
October 26, 2022
Export Citation:
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Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C22C38/00; C21D9/30; C22C38/60
Domestic Patent References:
WO2022065425A12022-03-31
Foreign References:
JP2006009145A2006-01-12
JP2011084784A2011-04-28
JP2017061747A2017-03-30
JP2007308772A2007-11-29
Attorney, Agent or Firm:
UEBA, Hidetoshi et al. (JP)
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