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公开(公告)号:EP4116445A1
公开(公告)日:2023-01-11
申请号:EP22183442.7
申请日:2022-07-06
申请人: SSAB Technology AB
发明人: PYYKKÖNEN, Juha , RITOLA, Ville , TARKKA, Jarmo , SUIKKANEN, Pasi , SAVOLA, Jaakko , LIIMATAINEN, Tommi , VIROLAINEN, Esa , AIRAKSINEN, Kari , ANTTILA, Severi , KELTAMÄKI, Kimmo , TIHINEN, Sakari
IPC分类号: C21D1/19 , C21D1/25 , C21D1/26 , C21D8/02 , C21D9/46 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/54 , C22C38/06
摘要: This invention relates to a hot-rolled weather resistant steel product comprising a composition consisting of, in terms of weight percentages (wt. %): C 0.015 - 0.045, Si 0.15 - 0.75, Mn 0.8 - 1.6, Al 0.005 - 0.12, Nb 0.0 - 0.08, Cu 0.2 - 1.0, Cr 0.35 - 1.0, Ni 0.01 - 1.0, Ti 0.0 - 0.12, Mo > 0.05 - 0.35, V 0.0 - 0.14, B 50 %,
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公开(公告)号:EP4114992A1
公开(公告)日:2023-01-11
申请号:EP21708181.9
申请日:2021-02-23
申请人: Schwartz GmbH
发明人: WINKEL, Jörg , REINARTZ, Andreas , WILDEN, Frank
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公开(公告)号:EP4026922A1
公开(公告)日:2022-07-13
申请号:EP20861319.0
申请日:2020-09-03
IPC分类号: C21D9/46 , C22C38/00 , C22C38/60 , C22C38/02 , C22C38/04 , C22C38/14 , C21D8/02 , C21D1/19 , C21D1/22 , B22D11/00 , B22D11/043 , B22D11/06 , C21D1/25 , C21D1/76 , B22D11/055
摘要: Provided are a steel sheet having a predetermined chemical composition and having the following steel structure, and a method of manufacturing the steel sheet.
(1) In area ratio%, ferrite: 0 to 5%, martensite: 90 to 100%, a ratio of tempered martensite to total martensite: 80 to 100%, and retained austenite: 0.5 to 6.0% are contained.
(2) The number density of inclusions satisfying the maximum diameter ≥ 3 µm is 40 inclusions/mm 2 or less.
(3)When the number density of the inclusions satisfying the maximum diameter ≥ 3 µm in each section is calculated, the number density in the section where the number density of inclusions is in the top 10% is 80 inclusions/mm 2 or less.
(4) Formula (A) is satisfied. V γ ′ /V γ ≥ 0.1 Vγ: Initial retained austenite, Vy': Retained austenite after deep cooling at -196°C
(5) The tensile strength is 1470 MPa or more.-
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57.
公开(公告)号:EP3797176A1
公开(公告)日:2021-03-31
申请号:EP18730235.1
申请日:2018-05-22
发明人: GERBER, Thomas , HECKELMANN, Ilse , LINKE, Bernd
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58.
公开(公告)号:EP3378957B1
公开(公告)日:2020-11-04
申请号:EP18163690.3
申请日:2018-03-23
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59.
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公开(公告)号:EP3164517B1
公开(公告)日:2020-01-08
申请号:EP15750460.6
申请日:2015-07-03
申请人: Arcelormittal
发明人: GIRINA, Olga A. , PANAHI, Damon
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