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    RAW PIPE OF Fe-Ni ALLOY AND METHOD FOR PRODUCTION THEREOF
    2.
    发明公开
    RAW PIPE OF Fe-Ni ALLOY AND METHOD FOR PRODUCTION THEREOF 有权
    管，从EAR Fe-Ni合金及工艺用于生产

    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.

    OIL WELL STEEL PIPE TO BE PLACED UNDER GROUND AND BE EXPANDED
    4.
    发明公开
    OIL WELL STEEL PIPE TO BE PLACED UNDER GROUND AND BE EXPANDED 审中-公开
    油井钢管埋地定位和扩建

    公开(公告)号：EP1640468A4

    公开(公告)日：2006-09-13

    申请号：EP04745326

    申请日：2004-05-26

    Applicant: SUMITOMO METAL IND

    Inventor： AMAYA HISASHI ,  ARAI YUJI

    IPC: C22C38/00 ,  C22C38/06 ,  C22C38/58

    CPC classification number: C22C38/02 ,  C22C38/04 ,  Y10T428/12

    Abstract: An oil well steel pipe to be placed under the ground and be expanded, which comprises a steel having a chemical composition in mass % that C: 0.05 to 0.45 %, Si: 0.1 to 1.5 %, Mn: 0.1 to 3.0 %, P: 0.03 % or less, S: 0.01 % or less, sol Al: 0.05 % or less, and the balance: Fe and impurities, with the proviso that the amount of N forming a solid solution in the steel is 40 ppm or less. The steel may also contain one or more of specific amounts of V, Ti, Nb, B, Cr, Mo, Ni, Cu and Ca in addition to the above composition. The oil well steel pipe is excellent in the resistance to the sulfide stress cracking after being expanded.

    Ni BASE ALLOY MATERIAL TUBE AND METHOD FOR PRODUCTION THEREOF
    5.
    发明公开
    Ni BASE ALLOY MATERIAL TUBE AND METHOD FOR PRODUCTION THEREOF 有权
    PIPE镍基合金材料及其制造方法

    公开(公告)号：EP1777313A4

    公开(公告)日：2009-06-03

    申请号：EP05755622

    申请日：2005-06-29

    Applicant: SUMITOMO METAL IND

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

    IPC: C22C19/05 ,  B21B19/04 ,  C22F1/10

    CPC classification number: B21B19/04 ,  B21B23/00 ,  C22C19/053 ,  C22C19/055 ,  C22C19/056 ,  C22F1/10

    Abstract: A nickel base alloy material tube which has a chemical composition that C = 0.04 %, Si = 0.50 %, Mn: 0.01 to 6.0 %, P = 0.03 %, S = 0.01 %, Cr: 15 to 30 %, Ni: more than 45 % and not more than 60 %, Mo: 0 to 18 %, W: 0 to 36 %, with the proviso that Mo (%) + 0.5W (%): more than 1.5 % and not more than 18 %, Cu: 0.01 to 1.5 %, Al = 0.01 %, N: 0.0005 to 0.20 %, and the balance: substantially Fe, wherein 1380 - 5000P - 100S - 4400C = 1300, Ni + 10(Mo + 0.5W) + 100N = 200, and (Ni - 50) + 10(N - 0.1) -2(Cr -25) - 5(Mo + 0.5W - 6) + 12 = 0 are satisfied. The above nickel base alloy material tube has excellent inner surface characteristics being sufficient to be finished into a seamless pipe by the use of Mannesman piercer. The resultant seamless pipe has an excellent mechanical properties and also excellent in the corrosion resistance under the sour gas environment, and thus, the above nickel base alloy material tube can be utilized as a material tube for an oil well pipe and a line pipe and further a material tube for various structural members in a nuclear power plant and a chemical plant.

    MARTENSITIC STAINLESS STEEL
    7.
    发明公开
    MARTENSITIC STAINLESS STEEL 有权
    MARTENSITISCHER NICHTROSTENDER STAHL

    公开(公告)号：EP1652950A4

    公开(公告)日：2006-09-27

    申请号：EP04748013

    申请日：2004-07-22

    Applicant: SUMITOMO METAL IND

    Inventor： KONDO KUNIO ,  AMAYA HISASHI

    IPC: C22C38/00 ,  C22C38/58

    CPC classification number: C22C38/42 ,  C22C38/02 ,  C22C38/04 ,  C22C38/44

    Abstract: A martensitic stainless steel which has a essential chemical composition, in mass %, wherein C: 0.001 to 0.1 %, Si: 0.05 to 1.0 %, Mn: 0.05 to 2.0 %, P: 0.025 % or less, S: 0.010 % or less, Cr: 11 to 18 %, Ni: 1.5 to 10 %, sol.Al: 0.001 to 0.1 %, N: 0.1 % or less, O: 0.01 % or less, Cu: 0 to 5 %, and Mo forming a solid solution: 3.5 to 7 %, wherein the following formula (1) is satisfied and optionally one or more elements selected from at least one group of the following A to C groups are further contained, and wherein the balance is composed of Fe, Mo forming no solid solution, if any, and impurities, formula (1): Ni-bal.= 30(C+N)+0.5(Mn+Cu)+Ni+8.2 -1.1(Cr+Mo+1.5Si) >= -4.5; A group - W: 0.2 to 5 %, B group - V: 0.001 to 0.50 %, Nb: 0.001 to 0.50 %, Ti: 0.001 to 0.50 % and Zr: 0.001 to 0.50 %, C group - Ca: 0.0005 to 0.05 %, Mg: 0.0005 to 0.05 %, REM: 0.0005 to 0.05 % and B: 0.0001 to 0.01 %. The martensitic stainless steel has the resistance to sulfide stress corrosion cracking being superior to that of super 13 Cr steel and exhibits the strength and corrosion resistance comparable to those of duplex stainless steel.

    Abstract translation: 1。一种马氏体系不锈钢，其特征在于，以质量％计含有C：0.001〜0.1％，Si：0.05〜1.0％，Mn：0.05〜2.0％，P：0.025％以下，S：0.010％以下 ，Cr：11〜18％，Ni：1.5〜10％，sol.Al：0.001〜0.1％，N：0.1％以下，O：0.01％以下，Cu：0〜5％ 溶液：3.5〜7％，其中，满足下述式（1），并且还含有选自下述A〜C组中的至少一组中的1种以上的元素，余量由Fe，Mo形成 （1）：Ni-bal。= 30（C + N）+0.5（Mn + Cu）+ Ni + 8.2-1.1（Cr + Mo + 1.5Si）> = - 4.5; A组：W：0.2〜5％，B组：-V：0.001〜0.50％，Nb：0.001〜0.50％，Ti：0.001〜0.50％，Zr：0.001〜0.50％，C组Ca：0.0005〜0.05％ ，Mg：0.0005〜0.05％，REM：0.0005〜0.05％，B：0.0001〜0.01％。 马氏体不锈钢的抗硫化物应力腐蚀开裂性能优于超级13Cr钢，并表现出与双相不锈钢相当的强度和耐腐蚀性。

    MARTENSITE STAINLESS STEEL OF HIGH CORROSION RESISTANCE
    8.
    发明公开
    MARTENSITE STAINLESS STEEL OF HIGH CORROSION RESISTANCE 失效
    MARTENSITISCHER ROSTFREIER STAHL MIT HOHEM KORROSIONSWIDERSTAND

    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。

    HIGH-STRENGTH STAINLESS STEEL FOR OIL WELL AND HIGH-STRENGTH STAINLESS STEEL PIPE FOR OIL WELL
    10.
    发明专利
    HIGH-STRENGTH STAINLESS STEEL FOR OIL WELL AND HIGH-STRENGTH STAINLESS STEEL PIPE FOR OIL WELL 未知

    公开(公告)号：CA2795326C

    公开(公告)日：2016-05-17

    申请号：CA2795326

    申请日：2011-04-25

    Applicant: SUMITOMO METAL IND

    Inventor： OHE TARO ,  AMAYA HISASHI ,  TAKABE HIDEKI ,  KONDO KUNIO ,  OTOME YOHEI

    IPC: C22C38/44 ,  C22C38/06 ,  C22C38/42

    Abstract: Disclosed is a high-strength stainless steel for oil wells having superior corrosion resistance in high temperature environments, having superior SSC resistance at normal temperatures, and having workability superior to 13% Cr steel. Specifically disclosed is a high-strength stainless steel for oil wells having a chemical composition that contains, in percent by mass, 0.05% or less C, 1.0% or less Si, 0.3% or less Mn, 0.05% or less P, less than 0.002% S, more than 16% and not more than 18% Cr, 1.5 - 3.0% Mo, 1.0 - 3.5% Cu, 3.5 - 6.5% Ni, 0.001 - 0.1% Al, 0.025% or less N, and 0.01% or less O, with the remainder being Fe and impurities. The high-strength stainless steel for oil wells also has a structure that includes a martensite phase, ferrite phase at a volume fraction of 10 - 48.5%, retained austenite phase at a volume fraction of 10% or less, yield strength of 758 MPa and uniform elongation of 10% or higher.

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