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公开(公告)号：US20200299800A1
公开(公告)日：2020-09-24
申请号：US16607420
申请日：2018-04-13
IPC分类号： C21D9/46 , C21D8/02 , C21D6/00 , C22C38/60 , C22C38/54 , C22C38/52 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00
摘要： A ferritic stainless steel sheet having excellent corrosion resistance, formability, and ridging resistance and a method for manufacturing the same are provided. A ferritic stainless steel sheet has a chemical composition containing, in terms of mass %, C: 0.005 to 0.030%, Si: 0.05 to 1.00%, Mn: 0.05 to 1.00%, P: 0.040% or less, S: 0.030% or less, Al: 0.001 to 0.150%, Cr: 10.8 to 14.4%, Ni: 0.01 to 2.50%, and N: 0.005 to 0.060%, with the balance being Fe and incidental impurities. The elongation after fracture is 28% or more, and the ridging height of a surface of a steel sheet to which a tensile strain of 23% has been applied in a rolling direction is 3.0 μm or less.
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2.发明申请公开(公告)号：US20160168673A1
公开(公告)日：2016-06-16
申请号：US14908176
申请日：2014-07-16
发明人： Masataka YOSHINO , Hiroki OTA
IPC分类号： C22C38/60 , C22C38/54 , C22C38/52 , C22C38/50 , C22C38/48 , C22C38/00 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/58 , C22C38/46
CPC分类号： C22C38/60 , C21D6/002 , C21D9/46 , C22C38/002 , C22C38/004 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/58
摘要： Ferritic stainless steel that is excellent in terms of corrosion resistance of a weld zone. The ferritic stainless steel includes, by mass %, C: 0.001% or more and 0.025% or less, Si: 0.05% or more and 0.30% or less, Mn: 0.35% or more and 2.0% or less, P: 0.05% or less, S: 0.01% or less, Al: 0.05% or more and 0.80% or less, N: 0.001% or more and 0.025% or less, Cr: 16.0% or more and 20.0% or less, Ti: 0.12% or more and 0.50% or less, Nb: 0.002% or more and 0.050% or less, Cu: 0.30% or more and 0.80% or less, Ni: 0.05% or more and less than 0.50%, V: 0.01% or more and 0.50% or less, and Fe and inevitable impurities such that Expression (1) is satisfied: 0.50
摘要翻译： 在焊接区的耐腐蚀性方面优异的铁素体不锈钢。 铁素体系不锈钢以质量％计含有：C：0.001％以上且0.025％以下，Si：0.05％以上且0.30％以下，Mn：0.35％以上且2.0％以下，P：0.05％ 以下，S：0.01％以下，Al：0.05％以上且0.80％以下，N：0.001％以上且0.025％以下，Cr：16.0％以上且20.0％以下，Ti：0.12％ 以上，0.50％以下，Nb：0.002％以上且0.050％以下，Cu：0.30％以上且0.80％以下，Ni：0.05％以上且小于0.50％，V：0.01％以上 和0.50％以下，以及满足式（1）的Fe和不可避免的杂质：0.50 <25×C + 18×N + Ni + 0.11×Mn + 0.46×Cu（1）。
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公开(公告)号：US20180265951A1
公开(公告)日：2018-09-20
申请号：US15516584
申请日：2014-10-02
发明人： Masataka YOSHINO , Akito MIZUTANI , Mitsuyuki FUJISAWA , Ayako TA
IPC分类号： C22C38/28 , C22C38/26 , C22C38/22 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C21D8/02
CPC分类号： C22C38/28 , C21D6/002 , C21D8/0263 , C21D8/0273 , C21D8/0463 , C21D8/0473 , C21D9/46 , C21D2211/005 , C22C38/001 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/18 , C22C38/22 , C22C38/26 , C22C38/32
摘要： A ferritic stainless steel having sufficient corrosion resistance and excellent formability and ridging resistance. The ferritic stainless steel having a chemical composition comprising, by mass %, C: 0.005% or more and 0.035% or less, Si: 0.25% or more and less than 0.40%, Mn: 0.05% or more and 0.35% or less, P: 0.040% or less, S: 0.01% or less, Cr: 15.5% or more and 18.0% or less, Al: 0.001% or more and 0.10% or less, N: 0.01% or more and 0.06% or less, and the balance being Fe and inevitable impurities. Si and Mn satisfy the relational expression 29.5×Si−50×Mn+6≥0, where Si and Mn in the relational expression respectively denote the content, by mass %, of the corresponding chemical element.
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公开(公告)号：US20170327921A1
公开(公告)日：2017-11-16
申请号：US15531562
申请日：2015-07-02
发明人： Akito MIZUTANI , Masataka YOSHINO , Mitsuyuki FUJISAWA , Ayako TA
IPC分类号： C21D9/46 , C21D6/00 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C22C38/52 , C21D8/02 , C22C38/54
CPC分类号： C21D9/46 , C21D6/002 , C21D6/004 , C21D6/005 , C21D6/007 , C21D6/008 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0273 , C21D2211/005 , C21D2211/008 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/40 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54
摘要： Ferritic stainless steel that has excellent formability and ridging resistance and can be produced with high productivity is provided. The ferritic stainless steel has: a predetermined chemical composition; a microstructure containing ferrite crystal grains which satisfy at least one of a C concentration of 2CC or more and an N concentration of 2CN or more, the ferrite crystal grains having a volume fraction with respect to a whole volume of the microstructure of 5% or more and 50% or less, where CC and CN are respectively C content and N content in the steel in mass %; and a Vickers hardness of 180 or less.
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公开(公告)号：US20220017984A1
公开(公告)日：2022-01-20
申请号：US17299308
申请日：2019-11-27
IPC分类号： C21D9/46 , C21D8/02 , C21D6/00 , C22C38/60 , C22C38/54 , C22C38/52 , C22C38/50 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00
摘要： A ferritic stainless steel sheet has a predetermined chemical composition and thickness, and has an area ratio of crystal grains of 45 μm or more in grain size of 20% or less.
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6.发明申请公开(公告)号：US20190226045A1
公开(公告)日：2019-07-25
申请号：US16327988
申请日：2017-09-27
IPC分类号： C21D9/46 , C21D8/02 , C21D6/00 , C22C38/54 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/52 , C22C38/06 , C22C38/04 , C22C38/00 , C22C38/02
摘要： A hot-rolled and annealed ferritic stainless steel sheet which has sufficient corrosion resistance and with which it is possible to inhibit a crack from occurring when punching work is performed to form a thick-walled flange and a method for manufacturing the steel sheet. The hot-rolled and annealed ferritic stainless steel sheet has a chemical composition comprising, by mass %, C: 0.001% to 0.020%, Si: 0.05% to 1.00%, Mn: 0.05% to 1.00%, P: 0.04% or less, S: 0.01% or less, Al: 0.001% to 0.100%, Cr: 10.0% to 24.0%, Ni: 0.01% to 0.60%, Ti: 0.10% to 0.40%, N: 0.001% to 0.020%, and the balance being Fe and inevitable impurities, and a threshold stress intensity factor KIC of 20 MPa·m1/2 or more.
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公开(公告)号：US20170349984A1
公开(公告)日：2017-12-07
申请号：US15533499
申请日：2015-07-02
发明人： Akito MIZUTANI , Masataka YOSHINO , Mitsuyuki FUJISAWA , Ayako TA
CPC分类号： C22C38/40 , C21D6/002 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D8/0273 , C21D9/46 , C21D2211/005 , C21D2211/008 , C22C38/00 , C22C38/001 , C22C38/005 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/50 , C22C38/52 , C22C38/54
摘要： Stainless steel that has excellent formability and ridging resistance and can be produced with high productivity is provided. The stainless steel comprises: a chemical composition containing, in mass %, C: 0.005% to 0.050%, Si: 0.01% to 1.00%, Mn: 0.01% to 1.0%, P: 0.040% or less, S: 0.010% or less, Cr: 15.5% to 18.0%, Ni: 0.01% to 1.0%, Al: 0.001% to 0.10%, and N: 0.005% to 0.06%, with a balance being Fe and incidental impurities; and a microstructure containing a martensite phase of 1% to 10% in volume fraction with respect to a whole volume of the microstructure.
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公开(公告)号：US20240072266A1
公开(公告)日：2024-02-29
申请号：US17823608
申请日：2022-08-31
发明人： Muhammad FEBRY , Takayoshi YANO , Tetsuyuki NAKAMURA , Akito MIZUTANI , Masataka YOSHINO , Reiko SUGIHARA , Conghua WANG
IPC分类号： H01M8/021 , H01M8/0217 , H01M8/0245
CPC分类号： H01M8/021 , H01M8/0219 , H01M8/0245 , H01M2008/1293
摘要： Disclosed is a component for solid oxide fuel cells that is excellent in both electrical conductivity and chromium poisoning resistance. As a substrate, a ferritic stainless steel having a chemical composition containing, in mass %, Cr: 14.0% to 32.0% and Al: 2.50% to 7.00% is used. Precious metal particles are coated on a surface of the substrate. The precious metal particles have: an average particle size of 1 μm or more and 10 μm or less; a coating thickness of 0.5 μm or more and 10 μm or less; and a surface coverage of 1.0% or more.
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公开(公告)号：US20230212705A1
公开(公告)日：2023-07-06
申请号：US17995582
申请日：2021-04-07
发明人： Masataka YOSHINO , Shino HIROTA , Takuya MATSUMOTO , Ayako TA
IPC分类号： C21D9/46 , C22C38/54 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00 , C21D8/02 , C21D1/18 , C21D6/00
CPC分类号： C21D9/46 , C22C38/54 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/005 , C22C38/002 , C22C38/001 , C21D8/0205 , C21D8/0226 , C21D8/0236 , C21D8/0263 , C21D1/18 , C21D6/004 , C21D6/005 , C21D6/008 , C21D2211/005 , C21D2211/008
摘要： Provided is a stainless steel sheet having a predetermined chemical composition, in which a total volume fraction of Cr-based carbides with a grain size of 2.0 μm or more is 10% or less.
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公开(公告)号：US20230119504A1
公开(公告)日：2023-04-20
申请号：US17904954
申请日：2021-02-19
IPC分类号： C22C38/54 , C22C38/52 , C22C38/50 , C22C38/48 , C22C38/46 , C22C38/44 , C22C38/42 , C22C38/06 , C22C38/04 , C22C38/02 , C22C38/00
摘要： Having a chemical composition (1) containing 0.15 mass % to 1.00 mass % of Nb, and (2) containing 0.0005 mass % to 0.0100 mass % of Mg, where (3) the Al content is controlled in a range of 0.55 mass % to 2.00 mass %, and (4) a relationship of 0.0004≤[Mg]/[Al]≤0.0050 is further satisfied.
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