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Title:
HOT ROLLED STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2021/176999
Kind Code:
A1
Abstract:
Provided is a hot rolled steel sheet having a prescribed chemical composition, the microstructure of the hot rolled steel sheet comprising 90-100% pearlite and 0-10% proeutectoid ferrite by area ratio, the average lamellar spacing of the pearlite being 0.08-0.30 µm, and the ratio of cementite for which the length of the long axis thereof is greater than 0.3 µm and the aspect ratio is less than 3.0 from among cementite constituting the pearlite being less than 15%.

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Inventors:
NAKADA KOHEI (JP)
TOYODA TAKESHI (JP)
Application Number:
PCT/JP2021/005325
Publication Date:
September 10, 2021
Filing Date:
February 12, 2021
Export Citation:
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Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C21D8/02; C21D9/46; C22C38/00; C22C38/58
Domestic Patent References:
WO2020179737A12020-09-10
WO2020179737A12020-09-10
Foreign References:
JP2015515548A2015-05-28
US20190316235A12019-10-17
JP2011099129A2011-05-19
JP2011530659A2011-12-22
JP2019039056A2019-03-14
US20110259483A12011-10-27
JP2016098414A2016-05-30
JP2011530659A2011-12-22
JP2011099132A2011-05-19
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
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