EP2245201A1 - Hochfester niedriglegierter stahl für nahtlose rohre mit hervorragender schweissbarkeit und korrosionsbeständigkeit - Google Patents
Hochfester niedriglegierter stahl für nahtlose rohre mit hervorragender schweissbarkeit und korrosionsbeständigkeitInfo
- Publication number
- EP2245201A1 EP2245201A1 EP09716073A EP09716073A EP2245201A1 EP 2245201 A1 EP2245201 A1 EP 2245201A1 EP 09716073 A EP09716073 A EP 09716073A EP 09716073 A EP09716073 A EP 09716073A EP 2245201 A1 EP2245201 A1 EP 2245201A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- steel
- max
- strength
- mpa
- low
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
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 steel pipes with excellent weldability and resistance to stress corrosion cracking according to claim 1.
- Seamless tubes made of high-strength steels are z. B. used for pipes for the transport of oil or gas, which are laid both onshore and offshore.
- Alloys commonly used for seamless conduits are defined for steels up to 80 ksi (X80) in standards such as API 5L, DNV-OS-F101 and EN 10208. For high strength grades above 80 ksi, these standards do not specify the limits for the alloying elements. When developing higher-strength grades, it must be borne in mind that the steel tubes produced from them are weldable and must possess good strength and toughness properties. While to date standard for steel pipes good to X80 (R min p02 551 MPa, R m min 620 MPa according to API 5L were used, there is now an increasing need for
- the strength-increasing mechanism which at the same time leads to an increase in toughness, is known to be the reduction of the grain size. This can be achieved, inter alia, by alloying nickel and molybdenum and the associated reduction in the transformation temperature
- molybdenum improves tempering resistance at higher tempering temperatures and throughput.
- nickel significantly deteriorates the surface quality of the hot-rolled tubes above a certain alloy content
- titanium, niobium and vanadium are used. Titanium precipitates as high-coarse titanium nitride at high temperatures. Niobium forms at lower temperatures Niobkarbonit ⁇ d precipitates With further decreasing temperature, vanadium additionally accumulates in carbonitrides , ie it is to be expected with the excretion of VC-Te ⁇ lchen
- a high strength, low alloy steel for hot rolled seamless steel tubing that meets the requirements of an X100 API 5L for welded tubes is from WO 2007/017161 A1 known
- This known steel alloy has an alloy concept with C 0 03 - 0.13%, Mn 0.90 - 1, 80%, Si ⁇ 0.40%, P ⁇ 0.020%, S ⁇ 0.005%, Ni 0 , 10 - 1, 00%, Cr 0,20 - 1, 20%, Mo 0,15 - 0,80%, Ca ⁇ 0,040%, V ⁇ 0,10%, Nb ⁇ 0,040%, Ti ⁇ 0,020%, N ⁇ 0.011% and a mixture consisting of bainite and martensite
- the N ⁇ contents are up to 1% in the known steel very high, which can in the formation of adhesive scale on the surface during hot rolling of the tubes, eg hot pilots, Rohrkontivon, etc, impact, and the surface quality of the pipes strong and would require extensive surface finishing
- the object of the invention is to provide a low-cost low-alloy steel for the production of high-strength weldable seamless steel tubes, which satisfies the stated requirements for yield strength, tensile strength and impact energy and also ensures good general weldability and sufficient corrosion resistance in sour gas use and after hot rolling has a perfect surface
- This object is achieved with the features of claim 1.
- Remaining iron with impurities caused by melting with optional addition of Ti and the proviso that the sum of the contents of Ti + Nb + V is ⁇ 0.04 to ⁇ 0.15% and the ratio Cu / Ni is a value of ⁇ 1 having.
- the steel alloy according to the invention is based on the development of the pipe steels according to API 5L, ISO 3183, DNV-OS-F101 and EN 10208.
- copper In addition to nickel, copper also has a positive effect on acid gas resistance. Copper alloyed alone adversely affects hot workability and damages the material Grain boundaries. By alloying Ni with an additionally adjusted with respect to sour gas resistance Cu / Ni ratio (Cu / Ni ⁇ 1), this is compensated.
- the Ni content is max. 0.60% low enough to produce a sufficiently good surface quality for the tube manufacturing processes mainly used for this steel grade.
- the seamless steel tubes produced from an operating melt with the steel alloy of the invention listed below have excellent strength and toughness properties.
- the values are the mean values of three tensile specimens each, or three notched-bar impact specimens.
- the samples were taken as longitudinal samples from heat-treated tubes made in-house.
- OD outer diameter
- WD wall thickness
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)
Abstract
Description
Claims
Applications Claiming Priority (2)
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 |
PCT/DE2009/000158 WO2009106033A1 (de) | 2008-02-28 | 2009-02-02 | Hochfester niedriglegierter stahl für nahtlose rohre mit hervorragender schweissbarkeit und korrosionsbeständigkeit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2245201A1 true EP2245201A1 (de) | 2010-11-03 |
EP2245201B1 EP2245201B1 (de) | 2017-09-13 |
Family
ID=40637863
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP09716073.3A Not-in-force EP2245201B1 (de) | 2008-02-28 | 2009-02-02 | Hochfester niedriglegierter stahl für nahtlose rohre mit hervorragender schweissbarkeit und korrosionsbeständigkeit |
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) |
Families Citing this family (8)
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 |
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 |
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 |
BR102016001063B1 (pt) | 2016-01-18 | 2021-06-08 | Amsted Maxion Fundição E Equipamentos Ferroviários S/A | liga de aço para componentes ferroviários, e processo de obtenção de uma liga de aço para componentes ferroviários |
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 |
ES2846779T3 (es) | 2016-07-13 | 2021-07-29 | Vallourec Deutschland Gmbh | Acero microaleado y método para producir dicho acero |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
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 |
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 |
US8512487B2 (en) * | 2003-10-20 | 2013-08-20 | Jfe Steel Corporation | Seamless expandable oil country tubular goods and manufacturing method thereof |
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. |
-
2008
- 2008-02-28 DE DE102008011856A patent/DE102008011856A1/de not_active Ceased
-
2009
- 2009-02-02 BR BRPI0908484A patent/BRPI0908484A8/pt not_active Application Discontinuation
- 2009-02-02 JP JP2010547943A patent/JP5715826B2/ja not_active Expired - Fee Related
- 2009-02-02 WO PCT/DE2009/000158 patent/WO2009106033A1/de active Application Filing
- 2009-02-02 EP EP09716073.3A patent/EP2245201B1/de not_active Not-in-force
- 2009-02-02 MX MX2010009446A patent/MX2010009446A/es active IP Right Grant
- 2009-02-02 US US12/920,218 patent/US20110259478A1/en not_active Abandoned
- 2009-02-23 AR ARP090100622A patent/AR070624A1/es unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2009106033A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE102008011856A1 (de) | 2009-09-10 |
AR070624A1 (es) | 2010-04-21 |
JP5715826B2 (ja) | 2015-05-13 |
WO2009106033A1 (de) | 2009-09-03 |
US20110259478A1 (en) | 2011-10-27 |
EP2245201B1 (de) | 2017-09-13 |
BRPI0908484A8 (pt) | 2017-05-16 |
BRPI0908484A2 (pt) | 2015-08-18 |
MX2010009446A (es) | 2010-09-30 |
JP2011513584A (ja) | 2011-04-28 |
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