US20110259478A1 - High-strength, low-alloy steel for seamless pipes with outstanding weldability and corrosion resistance - Google Patents

High-strength, low-alloy steel for seamless pipes with outstanding weldability and corrosion resistance Download PDF

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Publication number
US20110259478A1
US20110259478A1 US12/920,218 US92021809A US2011259478A1 US 20110259478 A1 US20110259478 A1 US 20110259478A1 US 92021809 A US92021809 A US 92021809A US 2011259478 A1 US2011259478 A1 US 2011259478A1
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US
United States
Prior art keywords
steel
strength
max
mpa
low
Prior art date
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Abandoned
Application number
US12/920,218
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English (en)
Inventor
André Schneider
Tanja Schmidt
Christina Wintermann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Vallourec Deutschland GmbH
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V&M Deutschland GmbH
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Filing date
Publication date
Application filed by V&M Deutschland GmbH filed Critical V&M Deutschland GmbH
Assigned to V & M DEUTSCHLAND GMBH reassignment V & M DEUTSCHLAND GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHMIDT, TANJA, SCHNEIDER, ANDRE, WINTERMANN, CHRISTINA
Publication of US20110259478A1 publication Critical patent/US20110259478A1/en
Abandoned legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/08—Ferrous alloys, e.g. steel alloys containing nickel
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/16—Ferrous alloys, e.g. steel alloys containing copper

Definitions

  • the invention relates to a high-strength, low-alloy steel for seamless pipes with excellent weldability and resistance against stress corrosion cracking according to claim 1 .
  • Seamless pipes constructed from high-strength steels are used, for example, in pipelines for transporting oil or gas and can be laid onshore as well as offshore.
  • Alloys which are typically used for seamless pipes in pipelines, are defined for steel grades to 80 ksi (X80) in form of standards, for example API 5L, DNV-OS-F 101 and EN 10208.
  • X80 80 ksi
  • these standards provide no information with respect to limit values for the alloy elements.
  • the required properties for hot-rolled, seamless pipes must be attained by a subsequent tempering treatment, in particular by adapting an alloying process and by deliberately adjusting a fine-grain structure meeting the requirements.
  • a known mechanism responsible for increasing both the strength and the ductility is a reduction in the grain size. This can be achieved, among others, by alloying additional nickel and molybdenum and the associated decrease in the transition temperature.
  • Molybdenum also improves hardness retention at higher tempering temperatures and through-hardening. However, from a certain alloy concentration on, addition of nickel significantly degrades the surface quality of the hot-rolled pipes.
  • Micro-alloying elements such as titanium, niobium and vanadium, are additionally employed to increase the strength. Titanium already partially precipitates at high temperatures in the liquid phase as very coarse titanium nitride. Niobium forms niobium carbide precipitates at low temperatures. With further decreasing temperature, vanadium accumulates additionally in form of carbonitrites, i.e., precipitation of VC-particles can be anticipated.
  • WO 2007/017161 discloses a high-strength low-alloy steel for hot-rolled seamless steel pipes which satisfies the requirements of X100 according to API 5L for welded pipes.
  • Ni-concentrations in conventional steel are very high and can reach 1%, which may cause scaling of the surface during hot-rolling of the pipes, for example during hot pilgering, continuous pipe rolling processes, etc., and may severely degrade the surface quality of the pipes and require costly machining of the surface.
  • the steel alloy according to the invention improves on the development of the steels according to API 5L, ISO 3183, DNV-OS-F101 and EN 10208 for pipelines.
  • the sum of the concentrations of titanium, niobium and vanadium is, on one hand, sufficiently high at a value of ⁇ 0.04% to attain the required increase in strength, but is also sufficiently low with ⁇ 0.15% so as to ensure the required ductility properties and sufficient acid gas resistance.
  • the alloying concept according to the invention can be used to obtain both a steel with the grade 90 ksi (X90) as well as a steel with the grade 100 ksi (X100) while maintaining all requirements typical for the respective grade.
  • the seamless steel pipes produced from a process melt with the steel alloy according to the invention listed below have excellent strength and ductility values.
  • the values listed in the following Table are determined.
  • the values are the average values from each of three tensile samples or three notched impact strength samples.
  • the samples were taken as longitudinal samples from heat-treated pipes produced during operation.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Articles (AREA)
  • Rigid Pipes And Flexible Pipes (AREA)
US12/920,218 2008-02-28 2009-02-02 High-strength, low-alloy steel for seamless pipes with outstanding weldability and corrosion resistance Abandoned US20110259478A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102008011856A DE102008011856A1 (de) 2008-02-28 2008-02-28 Hochfester niedriglegierter Stahl für nahtlose Rohre mit hervorragender Schweißbarkeit und Korrosionsbeständigkeit
DE102008011856.7 2008-02-28
PCT/DE2009/000158 WO2009106033A1 (de) 2008-02-28 2009-02-02 Hochfester niedriglegierter stahl für nahtlose rohre mit hervorragender schweissbarkeit und korrosionsbeständigkeit

Publications (1)

Publication Number Publication Date
US20110259478A1 true US20110259478A1 (en) 2011-10-27

Family

ID=40637863

Family Applications (1)

Application Number Title Priority Date Filing Date
US12/920,218 Abandoned US20110259478A1 (en) 2008-02-28 2009-02-02 High-strength, low-alloy steel for seamless pipes with outstanding weldability and corrosion resistance

Country Status (8)

Country Link
US (1) US20110259478A1 (de)
EP (1) EP2245201B1 (de)
JP (1) JP5715826B2 (de)
AR (1) AR070624A1 (de)
BR (1) BRPI0908484A8 (de)
DE (1) DE102008011856A1 (de)
MX (1) MX2010009446A (de)
WO (1) WO2009106033A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104404368A (zh) * 2014-10-22 2015-03-11 苏州莱特复合材料有限公司 耐腐蚀性不锈钢合金及其制备方法
US9040865B2 (en) 2007-02-27 2015-05-26 Exxonmobil Upstream Research Company Corrosion resistant alloy weldments in carbon steel structures and pipelines to accommodate high axial plastic strains
EP3269837A1 (de) 2016-07-13 2018-01-17 Vallourec Deutschland GmbH Mikro-legierter stahl und verfahren zur herstellung dieses stahls
US10400296B2 (en) 2016-01-18 2019-09-03 Amsted Maxion Fundicao E Equipamentos Ferroviarios S.A. Process of manufacturing a steel alloy for railway components

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102154593B (zh) * 2011-05-26 2013-01-16 天津钢管集团股份有限公司 X80钢级抗腐蚀低温无缝管线管
CN102900897A (zh) * 2011-07-28 2013-01-30 锐迈管业有限公司 一种混凝土泵车弯管及其加工工艺
CN105543705A (zh) * 2016-01-19 2016-05-04 天津钢管集团股份有限公司 海洋环境R-Lay铺设用抗大应变抗腐蚀无缝管线管的制造方法
CN105543690A (zh) * 2016-01-19 2016-05-04 天津钢管集团股份有限公司 具有抗大应变的415spdf以上钢级海底无缝管线管

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06172855A (ja) * 1992-12-10 1994-06-21 Nippon Steel Corp 低降伏比高靭性シームレス鋼管の製造法

Family Cites Families (11)

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JPS56166324A (en) * 1980-05-23 1981-12-21 Kawasaki Steel Corp Production of high-strength seamless steel pipe of good weldability for middle temperature region
JPS5837120A (ja) * 1981-08-28 1983-03-04 Kawasaki Steel Corp 脆性破壊の伝播停止特性にすぐれたパイプライン用厚肉鋼管の製造方法
JPS62151545A (ja) * 1985-12-25 1987-07-06 Kawasaki Steel Corp 厚肉高強度低ＰｃＭ曲管とその製造方法
JPH01139740A (ja) * 1987-11-27 1989-06-01 Kawasaki Steel Corp 耐食二重管
DE3832014C2 (de) * 1988-09-16 1994-11-24 Mannesmann Ag Verfahren zur Herstellung hochfester nahtloser Stahlrohre
JPH09287027A (ja) * 1996-04-19 1997-11-04 Sumitomo Metal Ind Ltd 高強度高靱性継目無鋼管の製造方法
JPH1017986A (ja) * 1996-06-28 1998-01-20 Nippon Steel Corp パイプラインの耐外面ｓｃｃ特性に優れた鋼
JP2004176172A (ja) * 2002-10-01 2004-06-24 Sumitomo Metal Ind Ltd 耐水素誘起割れ性に優れた高強度継目無鋼管およびその製造方法
BRPI0415653B1 (pt) * 2003-10-20 2017-04-11 Jfe Steel Corp artigos tubulares para petróleo sem costura expansíveis do tipo octg e método de fabricação dos mesmos
JP4475023B2 (ja) * 2004-06-10 2010-06-09 住友金属工業株式会社 低温靱性に優れた超高強度ベンド管
MXPA05008339A (es) 2005-08-04 2007-02-05 Tenaris Connections Ag Acero de alta resistencia para tubos de acero soldables y sin costura.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06172855A (ja) * 1992-12-10 1994-06-21 Nippon Steel Corp 低降伏比高靭性シームレス鋼管の製造法

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9040865B2 (en) 2007-02-27 2015-05-26 Exxonmobil Upstream Research Company Corrosion resistant alloy weldments in carbon steel structures and pipelines to accommodate high axial plastic strains
CN104404368A (zh) * 2014-10-22 2015-03-11 苏州莱特复合材料有限公司 耐腐蚀性不锈钢合金及其制备方法
US10400296B2 (en) 2016-01-18 2019-09-03 Amsted Maxion Fundicao E Equipamentos Ferroviarios S.A. Process of manufacturing a steel alloy for railway components
US10415108B2 (en) * 2016-01-18 2019-09-17 Amsted Maxion Fundição E Equipamentos Ferroviários S.A. Steel alloy for railway components, and process of manufacturing a steel alloy for railway components
EP3269837A1 (de) 2016-07-13 2018-01-17 Vallourec Deutschland GmbH Mikro-legierter stahl und verfahren zur herstellung dieses stahls
WO2018011299A1 (en) 2016-07-13 2018-01-18 Vallourec Deutschland Gmbh Micro alloyed steel and method for producing said steel
CN109477189A (zh) * 2016-07-13 2019-03-15 瓦卢莱克德国有限公司 微合金钢和用于制备所述钢的方法
US11021769B2 (en) 2016-07-13 2021-06-01 Vallourec Deutschland Gmbh Micro alloyed steel and method for producing said steel

Also Published As

Publication number Publication date
JP2011513584A (ja) 2011-04-28
AR070624A1 (es) 2010-04-21
EP2245201A1 (de) 2010-11-03
BRPI0908484A2 (pt) 2015-08-18
MX2010009446A (es) 2010-09-30
JP5715826B2 (ja) 2015-05-13
EP2245201B1 (de) 2017-09-13
DE102008011856A1 (de) 2009-09-10
WO2009106033A1 (de) 2009-09-03
BRPI0908484A8 (pt) 2017-05-16

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AS Assignment

Owner name: V & M DEUTSCHLAND GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SCHNEIDER, ANDRE;SCHMIDT, TANJA;WINTERMANN, CHRISTINA;REEL/FRAME:025443/0016

Effective date: 20100920

STCB Information on status: application discontinuation

Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION