公开(公告)号：EP2163655A4

公开(公告)日：2011-12-21

申请号：EP08790632

申请日：2008-06-26

Applicant: SUMITOMO METAL IND

Inventor： SAGARA MASAYUKI ,  SUWABE HITOSHI ,  AMAYA HISASHI ,  KIMURA SHIGEMITSU ,  IGARASHI MASAAKI

IPC: C21D8/10 ,  B21B3/02 ,  C21D6/00 ,  C22C38/42 ,  C22C38/44

CPC classification number: C22C38/02 ,  C21D6/004 ,  C21D8/10 ,  C21D8/105 ,  C21D9/14 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44

公开(公告)号：EP1777314A4

公开(公告)日：2008-01-09

申请号：EP05755195

申请日：2005-06-29

Applicant: SUMITOMO METAL IND

Inventor： IGARASHI MASAAKI ,  SHIMODA KAZUHIRO ,  YAMAKAWA TOMIO ,  AMAYA HISASHI

IPC: C22C38/00 ,  B21B19/04 ,  C21D8/10 ,  C22C19/05 ,  C22C38/58 ,  C22F1/10

CPC classification number: C22F1/10 ,  B21B23/00 ,  C21D8/10 ,  C22C19/055 ,  C22C38/02 ,  C22C38/04 ,  C22C38/42 ,  C22C38/44

Abstract: A raw pipe made of an Fe-Ni alloy, which has a chemical composition that C: 0.04 % or less, Si: 0.50 % or less, Mn: 0.01 to 6.0 %, P: 0.03 % or less, S: 0.01 % or less, Cr: 20 to 30 %, Ni: 30 to 45 %, Mo: 0 to 10 %, W: 0 to 20 %, Cu: 0.01 to 1.5 %, Al: 0.01 % or less, N: 0.0005 to 0.20 % and the balance: substantially Fe, with the proviso that Mo(%) + 0.5W(%) is more than 1.5 % and not more than 10 %, wherein 1440 - 6000P - 100S - 2000C = 1300, Ni + 10(Mo + 0.5W) + 100N = 120, (Ni - 35) + 10(N - 0.1) - 2(Cr -25) - 5(Mo + 0.5W - 3) + 8 = 0 are satisfied. The above raw pipe made of the Fe-Ni alloy is excellent in the property of the inner surface thereof and thus can be finished into a seamless pipe by the use of Mannesman piercer, and the resultant seamless pipe has excellent mechanical properties and also excellent in the corrosion resistance under a sour gas circumstance. Accordingly, the above raw pipe made of the Fe-Ni alloy can be utilized as a raw pipe for an oil well pipe and a line pipe, and further as a raw pipe for various structural members in a nuclear power plant and a chemical industry plant.

公开(公告)号：EP1930460A4

公开(公告)日：2010-03-24

申请号：EP06797438

申请日：2006-09-05

Applicant: SUMITOMO METAL IND

Inventor： NAKASHIMA TAKASHI ,  KAWANO KAORI ,  IGARASHI MASAAKI

IPC: C22C38/00 ,  C21C7/04 ,  C21C7/06 ,  C22C38/18 ,  C22C38/22 ,  C22C38/54

CPC classification number: C21C7/0006 ,  C21C7/06 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/22

公开(公告)号：EP1605072A4

公开(公告)日：2007-11-14

申请号：EP04722058

申请日：2004-03-19

Applicant: SUMITOMO METAL IND

Inventor： IGARASHI MASAAKI ,  SEMBA HIROYUKI ,  MIYAHARA MITSUO ,  OGAWA KAZUHIRO ,  OMURA TOMOHIKO

IPC: B23K35/30 ,  C22C38/00 ,  C22C38/18 ,  C22C38/46 ,  C22C38/58

CPC classification number: C22C38/18 ,  C22C38/001 ,  C22C38/02 ,  C22C38/06 ,  C22C38/46 ,  C22C38/58 ,  Y10T428/12979

Abstract: A stainless steel for a high pressure hydrogen gas, characterized in that it has a chemical composition, in mass %: C: 0.02 % or less, Si: 1.0 % or less, Mn: 3 to 30 %, Cr: more than 22 % and up to 30 %, Ni: 17 to 30 %, V: 0.001 to 1.0 %, N: 0.10 to 0.50 %, Al: 0.10 % or less, and the balance: Fe and impurities, with the proviso that the impurities contains, based on 100 mass % of the steel, 0.030 % or less of P, 0.005 % or less of S, and 0.010 % or less of each of Ti, Zr and Hf, and the contents of Cr, Mn and N satisfy the following formula (1): 5Cr + 3.4Mn

公开(公告)号：EP1873270A4

公开(公告)日：2009-12-02

申请号：EP06745409

申请日：2006-04-17

Applicant: SUMITOMO METAL IND

Inventor： IGARASHI MASAAKI ,  KAWANO KAORI

IPC: C22C38/00 ,  C22C38/32 ,  C22C38/54

CPC classification number: C22C38/22 ,  C22C38/02 ,  C22C38/04 ,  C22C38/24

公开(公告)号：EP1605073A4

公开(公告)日：2007-11-14

申请号：EP04722083

申请日：2004-03-19

Applicant: SUMITOMO METAL IND

Inventor： IGARASHI MASAAKI ,  SEMBA HIROYUKI ,  MIYAHARA MITSUO ,  OGAWA KAZUHIRO ,  OMURA TOMOHIKO

IPC: B23K35/30 ,  C22C38/18 ,  C22C38/00 ,  C22C38/58

CPC classification number: C22C38/18 ,  B23K35/3086 ,  C22C38/001 ,  C22C38/02 ,  C22C38/06 ,  C22C38/46 ,  C22C38/58

Abstract: A high-strength stainless steel having excellent mechanical properties and corrosion resistance in high-pressure hydrogen gas environments is disclosed. A container for high-pressure hydrogen gas made of such a stainless steel is also disclosed. The stainless steel has a chemical composition comprising, in mass %, C: not more than 0.04%, Si: not more than 1.0%, Mn: 7-30%, Cr: 15-22%, Ni: 5-20%, V: 0.001-1.0%, N: 0.20-0.50%, Al: not more than 0.10%, and the balance: Fe and unavoidable impurities including not more than 0.030% of P, not more than 0.005% of S, and respectively not more than 0.01% of Ti, Zr and Hf. The contents of Cr, Mn and N satisfy the following relation: 2.5Cr + 3.4Mn

公开(公告)号：EP1645649A4

公开(公告)日：2006-12-13

申请号：EP04745932

申请日：2004-06-09

Applicant: SUMITOMO METAL IND

Inventor： SEMBA HIROYUKI ,  IGARASHI MASAAKI ,  OMURA TOMOHIKO ,  MIYAHARA MITSUO ,  OGAWA KAZUHIRO

IPC: C22C38/00 ,  C21D8/00 ,  C22C38/58

CPC classification number: C22C38/001 ,  C22C38/02 ,  C22C38/44 ,  C22C38/58

Abstract: An austenitic stainless steel for a hydrogen gas, which has a chemical composition, in mass %, that C: 0.10 % or less, Si: 1.0 % or less, Mn: 0.01 to 30 %, P: 0.040 % or less, S: 0.01 % or less, Cr: 15 to 30 %, Ni: 5.0 to 30 %, Al: 0.10 % or less, N: 0.001 to 0.30 % and the balance: Fe and inevitable impurities, wherein an X-ray (111) integration intensity of a cross section along the direction rectangular to the working direction is five times that in a random direction or less, and the X-ray integration intensity ratio of a cross section along the working direction satisfies I(220)/I(111)

公开(公告)号：EP1645355A4

公开(公告)日：2006-12-06

申请号：EP04745841

申请日：2004-06-08

Applicant: SUMITOMO METAL IND

Inventor： OGAWA KAZUHIRO ,  IGARASHI MASAAKI ,  SEMBA HIROYUKI ,  OMURA TOMOHIKO ,  MIYAHARA MITSUO

IPC: B23K35/30 ,  B23K9/173 ,  B23K35/02 ,  C22C38/00 ,  C22C38/58

CPC classification number: C22C38/44 ,  B23K9/173 ,  B23K35/0261 ,  B23K35/3033 ,  B23K35/3066 ,  B23K2201/06 ,  B23K2201/10 ,  B23K2201/12 ,  B23K2203/05 ,  C22C38/001 ,  C22C38/02 ,  C22C38/48 ,  C22C38/50 ,  C22C38/58 ,  Y10T428/12292 ,  Y10T428/12951 ,  Y10T428/12958 ,  Y10T428/12965 ,  Y10T428/12972

Abstract: A weld joint having a base material and a weld metal both of an austenitic steel, wherein the weld metal has a chemical composition, in mass %, that C: 0.04 % or less, Si: 1.0 % or less, Mn: 3 % or less, P: 0.02 % or less, S: 0.005 % or less, Cr: 15 to 25 %, Ni: 30 % or more, Mo: 10 % or less, Nb: 2.5 to 5 %, Al: 3.0 % or less, Ti: 0.5 % or less, and the balance: Fe and inevitable impurities, with the proviso that the contents of Al and Ti satisfy the following: (Ti + Al) > Nb/8, and wherein the base material has a chemical composition, in mass %, that C: 0.04 % or less, Si: 1.0 % or less, Mn: 3 to 30 %, P: 0.02 % or less, S: 0.005 % or less, Cr: 15 to 30 %, Ni: 5 to 30 %, N: 0.10 to 0.50% and further contains at least one of 10 % or less of Mo, 10 % or less of W, 0.001 to 1.0 % of V, 0.10 % or less of Al, 0.01 % or less of Ti, 0.01 % or less of Zr and 0.01 % or less of Hf, the balance being Fe and inevitable impurities. The weld joint is a high strength austenitic steel weld joint which exhibits excellent toughness at a low temperature and excellent resistance to hydrogen embrittlement, which are required for a piping and a vessel for high pressure hydrogen, particularly also in a welded zone.

公开(公告)号：EP1403391A4

公开(公告)日：2004-08-25

申请号：EP02728217

申请日：2002-05-31

Applicant: SUMITOMO METAL IND

Inventor： KONDO KUNIO ,  KUSHIDA TAKAHIRO ,  KOMIZO YUICHI ,  IGARASHI MASAAKI

IPC: C21D8/00 ,  C21D8/02 ,  C22C38/00 ,  C22C38/18 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/54 ,  C22C38/40

CPC classification number: C22C38/44 ,  C21D8/005 ,  C21D8/0263 ,  C21D2211/008 ,  C22C38/42 ,  C22C38/46

Abstract: A martensitic stainless steel which comprises, in mass %, 0.01 to 0.1 % of C, 9 to 15 % of Cr, 0.1 % or less of N, wherein it contains carbides present in old austenite grain boundaries in an amount of 0.5 vol % or less, or wherein carbides contained therein have a maximum short diameter of 10 to 200 nm, or wherein carbides contained therein have a ratio of an average Cr concentration to an average Fe concentration of 0.4 or less, or wherein it contains carbides of M 23 C 6 type in an amount of 1 vol % or less, carbides of M 3 C type in an amount of 0.01 to 1.5 vol %, and nitrides of MN type or M 2 N type in an amount of 0.3 vol % or less. The martensitic stainless steel has a relatively high Cr content resulting in high strength, and also exhibits improved toughness, and accordingly has a wide range of applications including those for an oil well containing carbon dioxide and a small amount of hydrogen sulfide, in particular, an oil well pipe for a greatly deep oil well.

Abstract translation: 马氏体不锈钢（质量％）：0.01〜0.1碳; 9-15铬; 和0.1以下的氮。 不锈钢含有以0.5体积％以下的老奥氏体晶界存在的碳化物，或者其中含有的碳化物的最大短径为10〜200nm，其中含有的碳化物的平均铬 浓度为0.4以下的平均铁浓度，或者该组合物含有1体积％以下的M 23 C 6型碳化物，0.01〜1.5体积％的M 3C型碳化物，氮化物 MN型或M 2N型，含量为0.3体积％以下。

公开(公告)号：EP2157202A4

公开(公告)日：2011-09-14

申请号：EP08764663

申请日：2008-05-26

Applicant: SUMITOMO METAL IND

Inventor： HIRATA HIROYUKI ,  YOSHIZAWA MITSURU ,  OGAWA KAZUHIRO ,  IGARASHI MASAAKI

IPC: C22C38/00 ,  C22C38/38

CPC classification number: C22C38/24 ,  C22C38/001 ,  C22C38/005 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/22 ,  C22C38/26 ,  C22C38/30 ,  C22C38/32