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公开(公告)号：EP3438306A1
公开(公告)日：2019-02-06
申请号：EP16897119.0
申请日：2016-12-28
摘要： An objective of the present invention is to provide a Ni-Fe-Cr alloy having an excellent intergranular corrosion resistance. A Ni-Fe-Cr alloy of the present embodiment has a chemical composition consisting of, in mass percent, C: 0.005 to 0.015%, Si: 0.05 to 0.50%, Mn: 0.05 to 1.5%, P: 0.030% or less, S: 0.020% or less, Cu: 1.0 to 5.0%, Ni: 30.0 to 45.0%, Cr: 18.0 to 30.0%, Mo: 2.0 to 4.5%, Ti: 0.5 to 2.0%, N: 0.001 to 0.015%, and Al: 0 to 0.50%, with the balance being Fe and impurities. An average grain size d (µm) satisfies Formula (1): d 4.386 / C rel + 0.15 where, C rel in Formula (1) is defined by Formula (2): C rel = C − 0.125 Ti + 0.8571 N where, symbols of elements in Formula (1) and Formula (2) are to be substituted by contents of corresponding elements (mass%).
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公开(公告)号：EP2479301B1
公开(公告)日：2018-06-20
申请号：EP10817213.1
申请日：2010-09-15
发明人： UEYAMA, Masaki , TERUNUMA, Masaaki
CPC分类号： C22F1/10 , C22C19/055 , C22C30/02
摘要： A Ni based alloy material, having a chemical composition which consists of by mass percent, C ‰¤ 0.03%, Si: 0.01 to 0.5%, Mn: 0.01 to 1.0%, P ‰¤ 0.03%, S ‰¤ 0.01%, Cr: not less than 20% to less than 30%, Ni: more than 40% to not more than 50%, Cu: more than 2.0% to not more than 5.0%, Mo: 4.0 to 10%, Al: 0.005 to 0.5%, W: 0.1 to 10% , N: more than 0.10% to not more than 0.35%, and optionally one or more elements selected from Ca ‰¤ 0.01% and Mg ‰¤ 0.01%, with the balance being Fe and impurities, and the formula of "0.5Cu + Mo ‰¥ 6.5" is satisfied, and further, having a surface hardness of a Vickers hardness of not less than 350 at 500°C, has a corrosion resistance equivalent to that of Ni based alloys having high Mo contents, such as Hastelloy C22 and Hastelloy C276 together with an excellent erosion resistance, in a severe environment at a temperature from 100 to 500°C where erosion, hydrochloric acid corrosion, and sulfuric acid corrosion occur.
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公开(公告)号：EP3133179B1
公开(公告)日：2019-06-05
申请号：EP15779606.1
申请日：2015-04-17
IPC分类号： C22C38/58 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/02 , C22C38/00 , C21D8/02 , C21D8/00 , C21D6/00 , C21D9/00 , C21D7/13
CPC分类号： C21D9/0068 , B21D22/022 , C21D6/004 , C21D6/005 , C21D7/13 , C21D8/005 , C21D8/0226 , C21D2211/001 , C22C33/04 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/58
摘要： There is provided an austenitic stainless steel having a high strength and an excellent hydrogen brittleness resistance and further having an excellent machinability. The austenitic stainless steel of the present embodiment has a chemical composition including: in mass%, C: 0.10% or less; Si: 1.0% or less; Mn: 2.1 to 6.0%; P: 0.045% or less; S: 0.1% or less; Ni: 8.0 to 16.0%; Cr: 15.0 to 30.0%; Mo: 1.0 to 5.0%; N: 0.05 to 0.45%; Nb: 0 to 0.50%; and V: 0 to 0.50%, with the balance being Fe and impurities, and satisfying Formula (1). The austenitic stainless steel of the present embodiment has a grain size number of less than 8.0 and a tensile strength of 690 MPa or more. 15 ‰¤ 12.6 C + 1.05 Mn + Ni + 15 N
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公开(公告)号：EP3358030A1
公开(公告)日：2018-08-08
申请号：EP16850796.0
申请日：2016-07-06
发明人： HIRATA, Hiroyuki , JOTOKU, Kana , OMURA, Tomohiko , NAKAMURA, Jun , TERUNUMA, Masaaki , OSUKI, Takahiro , UEYAMA, Masaki
CPC分类号： C21D8/005 , C21D8/00 , C22C38/00 , C22C38/001 , C22C38/02 , C22C38/06 , C22C38/20 , C22C38/42 , C22C38/44 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/58 , Y02P10/212
摘要： An austenitic stainless steel with improved strength, ductility and weldability is provided. An austenitic stainless steel has a chemical composition of, in mass %: 0.005 to 0.07 % C; 0.1 to 1.2 % Si; 3.2 to 6.5 % Mn; 9 to 14 % Ni; a total of not less than 0.005 % and less than 3 % of at least one of Cu and Co; 19 to 24 % Cr; 1 to 4 % Mo; 0.05 to 0.4 % Nb; 0.15 to 0.50 % N; up to 0.05 % Al; up to 0.03 % P; up to 0.002 % S; up to 0.02 % O; 0 to 0.5 % V; 0 to 0.5 % Ti; 0 to 0.01 % B; 0 to 0.05 % Ca; 0 to 0.05 % Mg; 0 to 0.5 % REM; and the balance being Fe and impurities, where the amount of Nb analyzed as residues after electrolytic extraction is 0.01 to 0.3 mass %.
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公开(公告)号：EP3524702A1
公开(公告)日：2019-08-14
申请号：EP17858545.1
申请日：2017-10-06
发明人： TAKEDA, Kiyoko , TERUNUMA, Masaaki
摘要： Provided is a nickel material having excellent corrosion resistance and high strength, and a method for manufacturing the nickel material. A nickel material has a chemical composition consisting of, in mass%, C: 0.001 to 0.20%, Si: 0.15% or less, Mn: 0.50% or less, P: 0.030% or less, S: 0.010% or less, Cu: 0.10% or less, Mg: 0.15% or less, Ti: 0.005 to 1.0%, Nb: 0.040 to 1.0%, Fe: 0.40% or less, sol. Al: 0.01 to 0.10%, an N: 0.0010 to 0.080%, with the balance being Ni and impurities, and satisfying Formula (1) and Formula (2). 0.030 ≤ 45 / 48 Ti + 5 / 93 Nb − 1 / 14 N 0.25 0.030 3 / 48 Ti + 88 / 93 Nb − 1 / 12 C
A content (mass%) of a corresponding element is substituted for each element symbol in Formula (1) and Formula (2).-
公开(公告)号：EP3441495A1
公开(公告)日：2019-02-13
申请号：EP17779117.5
申请日：2017-04-04
摘要： There is provided an austenitic stainless steel material having a consistent high-strength across the overall length of the steel material. An austenitic stainless steel material according to the present embodiment has a chemical composition consisting of, in mass percent: C: 0.10% or less, Si: 1.0% or less, Mn: 3 to 8%, P: 0.05% or less, S: 0.03% or less, Ni: 10 to 20%, Cr: 15 to 30%, N: 0.20 to 0.70%, Mo: 0 to 5.0%, V: 0 to 0.5%, and Nb: 0 to 0.5%, with the balance being Fe and impurities, the austenitic stainless steel material having a grain size number of 6.0 or greater, the grain size number conforming to ASTM E 112. The tensile strength of the austenitic stainless steel material is 800 MPa or more, and the difference between the maximum value and the minimum value of the tensile strength is 50 MPa or smaller. The number of alloy carbo-nitrides having a circle equivalent diameter of larger than 1000 nm in the steel is 10 /mm 2 or more.
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公开(公告)号：EP2692886B1
公开(公告)日：2019-05-08
申请号：EP12764728.7
申请日：2012-03-19
发明人： OMURA, Tomohiko , NAKAMURA, Jun , OKADA, Hirokazu , SEMBA, Hiroyuki , TOMIO, Yusaku , HIRATA, Hiroyuki , IGARASHI, Masaaki , OGAWA, Kazuhiro , TERUNUMA, Masaaki
CPC分类号： C21D9/46 , C21D1/26 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0226 , C21D8/0236 , C21D8/0247 , C21D2211/001 , C21D2211/004 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/005 , C22C38/02 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/58 , F16L9/02
摘要： There is provided an austenitic stainless steel for high-pressure hydrogen gas consisting, by mass percent, of C: 0.10% or less, Si: 1.0% or less, Mn: 3% or more to less than 7%, Cr: 15 to 30%, Ni: 10% or more to less than 17%, Al: 0.10% or less, N: 0.10 to 0.50%, and at least one kind of V: 0.01 to 1.0% and Nb: 0.01 to 0.50%, the balance being Fe and impurities, wherein in the impurities, the P content is 0.050% or less and the S content is 0.050% or less, the tensile strength is 800 MPa or higher, the grain size number (ASTM E112) is No. 8 or higher, and alloy carbo-nitrides having a maximum diameter of 50 to 1000 nm are contained in the number of 0.4/µm 2 or larger in cross section observation.
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公开(公告)号：EP3133179A1
公开(公告)日：2017-02-22
申请号：EP15779606.1
申请日：2015-04-17
CPC分类号： C21D9/0068 , B21D22/022 , C21D6/004 , C21D6/005 , C21D7/13 , C21D8/005 , C21D8/0226 , C21D2211/001 , C22C33/04 , C22C38/00 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/58
摘要： There is provided an austenitic stainless steel having a high strength and an excellent hydrogen brittleness resistance and further having an excellent machinability. The austenitic stainless steel of the present embodiment has a chemical composition including: in mass%, C: 0.10% or less; Si: 1.0% or less; Mn: 2.1 to 6.0%; P: 0.045% or less; S: 0.1% or less; Ni: 8.0 to 16.0%; Cr: 15.0 to 30.0%; Mo: 1.0 to 5.0%; N: 0.05 to 0.45%; Nb: 0 to 0.50%; and V: 0 to 0.50%, with the balance being Fe and impurities, and satisfying Formula (1). The austenitic stainless steel of the present embodiment has a grain size number of less than 8.0 and a tensile strength of 690 MPa or more. 15 ≤ 12.6 C + 1.05 Mn + Ni + 15 N
摘要翻译： 提供了具有高强度和优异的耐氢脆性并且还具有优异的机械加工性的奥氏体不锈钢。 本实施方式的奥氏体系不锈钢具有以质量％计含有C：0.10％以下的化学成分。 Si：1.0％以下; Mn：2.1〜6.0％ P：0.045％以下; S：0.1％以下; Ni：8.0〜16.0％ Cr：15.0〜30.0％ Mo：1.0〜5.0％ N：0.05〜0.45％ Nb：0〜0.50％ V：0〜0.50％，余量为Fe和杂质，满足式（1）。 本实施方式的奥氏体系不锈钢的粒径数小于8.0，抗张强度为690MPa以上。 15‰¤12.6 C + 1.05 Mn + Ni + 15 N
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公开(公告)号：EP2256220B1
公开(公告)日：2016-03-23
申请号：EP09723654.1
申请日：2009-03-25
CPC分类号： C22F1/00 , C22C19/055 , C22F1/10
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10.发明公开
公开(公告)号：EP2692886A1
公开(公告)日：2014-02-05
申请号：EP12764728.7
申请日：2012-03-19
发明人： OMURA, Tomohiko , NAKAMURA, Jun , OKADA, Hirokazu , SEMBA, Hiroyuki , TOMIO, Yusaku , HIRATA, Hiroyuki , IGARASHI, Masaaki , OGAWA, Kazuhiro , TERUNUMA, Masaaki
CPC分类号： C21D9/46 , C21D1/26 , C21D6/004 , C21D6/005 , C21D6/008 , C21D8/0226 , C21D8/0236 , C21D8/0247 , C21D2211/001 , C21D2211/004 , C22C38/001 , C22C38/002 , C22C38/004 , C22C38/005 , C22C38/02 , C22C38/06 , C22C38/42 , C22C38/44 , C22C38/46 , C22C38/48 , C22C38/50 , C22C38/52 , C22C38/54 , C22C38/58 , F16L9/02
摘要： There is provided an austenitic stainless steel for high-pressure hydrogen gas consisting, by mass percent, of C: 0.10% or less, Si: 1.0% or less, Mn: 3% or more to less than 7%, Cr: 15 to 30%, Ni: 10% or more to less than 17%, Al: 0.10% or less, N: 0.10 to 0.50%, and at least one kind of V: 0.01 to 1.0% and Nb: 0.01 to 0.50%, the balance being Fe and impurities, wherein in the impurities, the P content is 0.050% or less and the S content is 0.050% or less, the tensile strength is 800 MPa or higher, the grain size number (ASTM E112) is No. 8 or higher, and alloy carbo-nitrides having a maximum diameter of 50 to 1000 nm are contained in the number of 0.4/µm 2 or larger in cross section observation.
摘要翻译： 提供了一种用于高压氢气的奥氏体不锈钢，以质量％计含有C：0.10％以下，Si：1.0％以下，Mn：3％以上且小于7％，Cr：15〜 30％，Ni：10％以上至小于17％，Al：0.10％以下，N：0.10〜0.50％，V：0.01〜1.0％，Nb：0.01〜0.50％中的至少一种， 余量为Fe和杂质，其中在杂质中，P含量为0.050％以下，S含量为0.050％以下，拉伸强度为800MPa以上，粒径数（ASTM E112）为8 以上，截面观察中最大直径为50〜1000nm的合金碳氮化物的含量为0.4 /μm2以上。
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