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：EP1548140A4

公开(公告)日：2007-10-31

申请号：EP03795286

申请日：2003-09-03

Applicant: SUMITOMO METAL IND

Inventor： ISHIDA KAZUHIKO ,  OGAWA KAZUHIRO ,  YAZAWA TAKEO ,  YAMAMOTO HIDEAKI ,  MORISAKI HIDEO

IPC: B23K15/00 ,  C22C38/00 ,  B21B1/02 ,  B21B3/02 ,  B23K9/04 ,  B23K35/30 ,  B23K103/04 ,  C21D7/13 ,  C22C38/04 ,  C22C38/32 ,  C22C38/44 ,  C22C38/54 ,  G21F5/00 ,  H01M8/02

CPC classification number: B21B3/02 ,  B21B1/024 ,  B21B1/026 ,  B21B2001/022 ,  B21B2001/028 ,  B23K15/00 ,  B23K35/308 ,  B23K35/3086 ,  B23K2203/05 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/06 ,  C22C38/44 ,  C22C38/54 ,  H01M8/021 ,  Y02P70/56

Abstract: A B-containing stainless steel bloom which comprises a stainless steel bloom containing 0.3 to 2.5 % of B and a protecting material being joined by the use of a weld metal having a chemical components satisfying the following formulae (1) to (4): 15 ≤ Cr eq ≤ 30 --- (1), 4 ≤ Cr eq - Ni eq ≤ 17 --- (2), Cr eq = Cr + 1.5Si + Mo - 5B --- (3), and Ni eq = Ni + 30(C + N) + 0.5Mn --- (4), wherein a symbol of an element represents the content of the element (mass %) in the steel, so as to be integrated with the bloom; the B-containing stainless steel bloom preferably further comprising an inserted material being provided between the bloom and the protecting material in the joining; and a method for producing a steel product comprising rolling the B-containing stainless steel bloom. The B-containing stainless steel bloom can be hot rolled without the occurrence of an edge crack and be used for a neutron shielding material and a separator of a fuel cell.

公开(公告)号：EP1645650A4

公开(公告)日：2007-07-25

申请号：EP04746980

申请日：2004-06-29

Applicant: SUMITOMO METAL IND

Inventor： OGAWA KAZUHIRO ,  OMURA TOMOHIKO

IPC: C22C38/00 ,  C22C38/44 ,  C22C38/54

CPC classification number: C22C38/44 ,  C22C38/001 ,  C22C38/02 ,  C22C38/04 ,  C22C38/54

Abstract: A duplex stainless steel which has a chemical composition that C: 0.03 % or less, Si: 1.0 % or less, Mn: 1.5 % or less, P: 0.040 % or less, S: 0.008 % or less, Cr: 23.0 to 27.0 %, Mo: 2.0 to 4.0 %, Ni: 5.0 to 9.0 %, W: more than 1.5 % and not more than 5.0 %, N: 0.24 to 0.35 %, and the balance: Fe and impurities, wherein PREW = Cr + 3.3(Mo + 0.5W) + 16N takes a value of 40 or more, the formulae Mo + 1.1Ni

Abstract translation: 1。一种双相不锈钢，其具有C：0.03％以下，Si：1.0％以下，Mn：1.5％以下，P：0.040％以下，S：0.008％以下，Cr：23.0〜27.0 ％，Mo：2.0〜4.0％，Ni：5.0〜9.0％，W：超过1.5％且5.0％以下，N：0.24〜0.35％，余量由Fe和杂质构成，PREW = Cr + 3.3 （Mo + 0.5W）+ 16N的值为40以上时，满足Mo +1.1Ni≤12.5和Mo-0.8Ni≤-1.6，并且其中被定义为包含Al的夹杂物的粗大夹杂物 通过观察截面而测定的20质量％以上且5μm以上的长径以每1mm见方10个以下的量存在。 双相不锈钢具有优异的耐点蚀性和优异的可焊性，特别是即使在热影响区也不会形成细金属化合物。

公开(公告)号：EP2199420A4

公开(公告)日：2011-12-21

申请号：EP08836748

申请日：2008-10-02

Applicant: SUMITOMO METAL IND

Inventor： OSUKI TAKAHIRO ,  OGAWA KAZUHIRO ,  HIRATA HIROYUKI ,  NISHIYAMA YOSHITAKA

IPC: C22C38/00 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50 ,  C22C38/60

CPC classification number: C22C38/001 ,  C22C38/40 ,  C22C38/46 ,  C22C38/48 ,  C22C38/50

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：EP0750053A4

公开(公告)日：1998-04-01

申请号：EP95940444

申请日：1995-12-14

Applicant: SUMITOMO METAL IND

Inventor： AZUMA SHIGEKI ,  OGAWA KAZUHIRO

IPC: C22C38/42 ,  C22C38/58 ,  C22C38/50 ,  C22C38/54

CPC classification number: C22C38/42 ,  C22C38/58

Abstract: A duplex stainless steel that is inexpensive, has an excellent corrosion resistance, and is suitable for applications such as pipings and heat exchanges of petroleum refining or chemical industrial plants. The steel comprises on the weight basis 0.05-2.0 % Si, 0.1-4.0 % Mn, 1.0-4.0 % Ni, 20.0-26.0 % Cr, over 1.0 to 3.0 % Cu, 0.002-0.05 % Al, 0.10-0.40 % N, and 0.05-0.50 % at least one element selected among V, Ti and Nb, optionally contains at most 0.50 % Mo, at most 0.50 % W, at most 0.0030 % of B, and at most 0.0030 % Ca, the balance consisting of Fe and inevitable impurities comprising at most 0.05 % C, at most 0.03 % P, and at most 0.005 % S, and has an Nibal value as defined by the following equation (1): Nibal = Nieq - 1.1. x Creq + 8.2 of -11.0 to -8.0, wherein (2): Nieq = Ni (%) + 0.5 x Cu (%) + 30 x {C (%) + N (%)} and (3): Creq = Cr (%) + 1.5 x Si (%) + Mo (%) + W (%).

Abstract translation: 本发明涉及一种适用于建筑管道系统，热交换器等的廉价，高耐腐蚀的双相不锈钢，其安装在炼油工业，化学工业等的设备中。 本发明的高耐腐蚀性双相不锈钢具有化学组成，重量百分比：Si：0.05〜2.0％，Mn：0.1〜4.0％，Ni：1.0〜4.0％，Cr：20.0〜26.0％，Cu：1.0〜3.0％ ，0.002〜0.05％的Al，0.10〜0.40％的N，0.05〜0.50％的V，Ti，Nb中的至少一种，必要时为0.50％以下，Mo：0.50％以下，W：0.0030以下，B： 0.0030％以下的Ca，余量为Fe和不可避免的杂质。 杂质含量为0.05％以下C，0.03％以下P和0.005％以下S.双相不锈钢具有以下式（1）表示的Nibal值：-11.0〜-8.0的范围：$其中$ $ $ \mathop{\mathrm{image}}$$$$

公开(公告)号：EP1179380A4

公开(公告)日：2007-04-18

申请号：EP00950035

申请日：2000-08-07

Applicant: SUMITOMO METAL IND

Inventor： KUSHIDA TAKAHIRO ,  OMURA TOMOHIKO ,  KONDO KUNIO ,  OGAWA KAZUHIRO ,  HAMADA MASAHIKO

IPC: B23K9/02 ,  B23K9/025 ,  B23K9/23 ,  B23K35/30 ,  C22C38/00 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50

CPC classification number: B23K9/23 ,  B23K9/0253 ,  B23K35/308 ,  B23K35/3086 ,  B23K2201/06 ,  C22C38/002 ,  C22C38/004 ,  C22C38/42 ,  C22C38/44 ,  C22C38/46 ,  C22C38/50 ,  Y10S148/909 ,  Y10T428/12958 ,  Y10T428/12979 ,  Y10T428/12986

Abstract: A large-diameter, thick-walled martensite stainless steel welded steel pipe, wherein a protrusion of a weld bead at an inner seam of the pipe is limited in size based on a conditional expression involving bead width and height, and yield strengths of a base material and a weld metal, thereby providing an excellent corrosion resistance, especially a stress corrosion cracking resistance (SCC resistance) at an inner seam of the pipe. A proper selection of a chemical composition can further enhance corrosion resistance such as sulfide stress cracking resistance (sour resistance) and carbon dioxide corrosion resistance. This welded steel pipe is particularly suitable for a pipeline steel pipe for transporting crude oil, natural gas or the like that are strong in metal corroding action and omitted in dehydrating treating.

公开(公告)号：EP1026273A4

公开(公告)日：2005-12-14

申请号：EP98932588

申请日：1998-07-17

Applicant: SUMITOMO METAL IND

Inventor： UEDA MASAKATSU ,  TAKABE HIDEKI ,  KONDO KUNIO ,  OGAWA KAZUHIRO ,  AMAYA HISASHI

IPC: C22C38/00 ,  C22C38/40 ,  C22C38/50 ,  C22C38/42

CPC classification number: C22C38/001 ,  C22C38/002 ,  C22C38/40 ,  C22C38/50

Abstract: Martensite stainless steel of a high corrosion resistance to carbon dioxide, a high strength and a high tenacity, not having the possibility of occurrence of cracks even when the steel is used as welded and cathodically protected, the steel having the following basic composition (1): at most 0.04 mass% of C, 7-15 mass% of Cr, 0.7-8.0 mass% of Ni, 0.001-0.20 mass% of A1 and a specified quantity of at least one kind of element selected from Si, Mn, Cu, S, Nb, Ti, Zr, Mo, W, Ca, Mg and La; and satisfying the following conditions (2): M=98+47C-1.1Cr+1.4Ni-150Al-200Nb-50Ti-200Zr-22(Mo+0.5W)>/=50... 1 P

Abstract translation: 高强度，高韧性的马氏体不锈钢，耐二氧化碳的耐腐蚀性优异，即使在阴极保护下焊接时也不会有龟裂的危险。 钢具有以下基本组成（1），满足以下条件（2）。 （1）以质量计含有C：不大于0.04％，Cr：7-15％，Ni：0.7-8.0％，Al：0.001-0.20％，或进一步含有一种或多种Si， Mn，Cu，S，Nb，Ti，Zr，Mo，W，Ca，Mg和La。 （2）满足以下不等式（1）和（2）。 M = 98 + 47C-1.1Cr + 1.4Ni-150Al-200Nb-50Ti-200Zr-22（Mo + 0.5W）> = = 50P <0.046-0.0008HRC其中不等式（1 ）-1〜（1）-4和（2）表示各元素的含量（质量％），不等式（2）中的HRC表示淬火后的钢的洛氏C度硬度。