EP0626460B1 - Acier inoxydable austénitique à haute résistance à la corrosion par les milieux chlorurés et sulfuriques et utilisations - Google Patents

Acier inoxydable austénitique à haute résistance à la corrosion par les milieux chlorurés et sulfuriques et utilisations Download PDF

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Publication number
EP0626460B1
EP0626460B1 EP94401110A EP94401110A EP0626460B1 EP 0626460 B1 EP0626460 B1 EP 0626460B1 EP 94401110 A EP94401110 A EP 94401110A EP 94401110 A EP94401110 A EP 94401110A EP 0626460 B1 EP0626460 B1 EP 0626460B1
Authority
EP
European Patent Office
Prior art keywords
stainless steel
austenitic stainless
steel according
steel
equipment
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.)
Expired - Lifetime
Application number
EP94401110A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0626460A1 (fr
Inventor
François Dupoiron
Jean-Christophe Gagnepain
Michel Verneau
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.)
Industeel Creusot
Original Assignee
Creusot Loire SA
Creusot Loire Industrie SA
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Filing date
Publication date
Application filed by Creusot Loire SA, Creusot Loire Industrie SA filed Critical Creusot Loire SA
Publication of EP0626460A1 publication Critical patent/EP0626460A1/fr
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C30/00—Alloys containing less than 50% by weight of each constituent
    • 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
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
    • C22C38/58—Ferrous alloys, e.g. steel alloys containing chromium with nickel with more than 1.5% by weight of manganese

Definitions

  • the present invention relates to stainless steel austenitic with high mechanical strength and high corrosion resistance.
  • stainless steels with high mechanical resistance and high corrosion resistance in chlorinated media and sulfuric media or even in media at a time chlorinated and sulfuric are superaustenitic steels, austenoferritic steels or superaustenitic steels with a high nitrogen content.
  • superaustenitic steels with a high nitrogen content are, for these applications, the steels which offer the better performance in terms of combination of characteristics mechanical and corrosion resistance. They are described by two European patents: EP-A-0.438.992 and EP-A-0.342.574.
  • the subject of the present invention is an austenitic stainless steel with high mechanical strength and high corrosion resistance, characterized in that it contains by weight: 23% ⁇ Cr ⁇ 28% 25% ⁇ Ni ⁇ 28% 4.5% ⁇ Mo ⁇ 7% 0.35% ⁇ N ⁇ 0.8% 0.5% ⁇ Mn ⁇ 5.4% C ⁇ 0.06% S ⁇ 0.010% If ⁇ 1% 0.5% ⁇ Cu ⁇ 3%, and at least one of the elements B, Nb, V, Al in the following contents: B 0.0001 to 0.003%, Nb 0.001 to 0.3%, V 0.001 to 0.3% and Al 0.001 to 0.1 %, the rest, with the exception of iron, being made up of impurities resulting from processing.
  • the carbon content is less than 0.04%.
  • this steel can contain from 1% to 2% copper.
  • the composition of the steel according to the invention is as follows: 25% ⁇ Cr ⁇ 26% 25% ⁇ Ni ⁇ 26% 6% ⁇ Mo ⁇ 7% 0.4% ⁇ N ⁇ 0.5% 2.5% ⁇ Mn ⁇ 3.5% C ⁇ 0.03% If ⁇ 0.3% 1% ⁇ Cu ⁇ 2%, the rest, with the exception of iron, being constituted by impurities resulting from the production.
  • the invention also relates to the use steel according to the invention for the manufacture of equipment pollution control from thermal power plants and household waste incineration plants, especially gas or smoke washing towers, gas lines or smoke and chimneys; for manufacturing equipment delignification, in particular by the process bisulfite, filtration and bleaching of the pulp paper; for manufacturing equipment for industry chemical in chlorinated or acidic medium and in particular for the manufacture of tanks, reservoirs, reactors, tubes pump casing and pump shafts; for the manufacture off-shore platform equipment subject to corrosion by sea water and / or hydrocarbons and in particular supports for flares, heat exchangers, separators, tubular plates, piping transport of sea water, pipes used for the transport of hydrocarbons, elements of protection of pylon areas in the vicinity of the free surface from the sea, mace rods, pump shafts, flanges connection, wellheads, manifolds and risers; for the manufacture road or rail transport tanks of chlorides or highly corrosive acids.
  • Such steel must contain less than 0.06% of carbon to avoid precipitation of carbides to grain boundaries which deteriorate corrosion resistance and it is preferable to limit this content to 0.04% and even better at 0.03%.
  • the steel always contains a little sulfur must be up to 0.010% which is favorable to machinability but which promotes corrosion by bites, too, it's better to have a sulfur content less than 0.01%.
  • copper between 0.5% and 3% and preferably between 1% and 2%; copper also has the advantage of improving machinability.
  • Additions of copper, vanadium, niobium, boron, aluminum are optional and can be made alone or in combination.
  • the main alloying elements have, for certain properties, effects all the more favorable as their content is high and for other properties, effects all the less unfavorable as the content is lower; therefore, it is preferable to choose the chemical composition in a composition range which is not too wide.
  • the domains of chromium, nickel and molybdenum must be limited to: 23% ⁇ Cr ⁇ 28% 25% ⁇ Ni ⁇ 28% 4.5% ⁇ Mo ⁇ 7%.
  • This steel may also contain Nb, V, B or Al as previously stated.
  • the steel according to the invention has an additional advantage which comes from the fact that the product A x R of the elongation at break by the break limit is very high (two times more than for the steels of the prior art used for transport) so that resistance to impact of the walls made with this steel is very high and in particular much higher than for steels of prior art.
  • This feature has the advantage of allowing to make tanks, containers or pipes for transporting much safer corrosives in the event of an impact, that the equivalent equipment produced with steels according to the prior art.
  • This steel makes it particularly suitable for the manufacture of reactors (scrubbers, washing tower, filter tanks, attack tanks), tubes (welded and seamless), chimneys, parts junction such as flanges, manifolds, flow lines, separators and road or rail transport tanks, for industries in which this equipment is subject to very severe corrosion by chlorinated media and / or pure or polluted sulfuric and in particular for off-shore oil exploitation platforms, for combustion smoke abatement facilities thermal power plants or incineration of household waste, for the preparation of paper pulp in particular by the process called "bisulfite", and in particular for filtration, bleaching and delignification equipment, for the chemical industry and more particularly for hydrometallurgy equipment and the industry fertilizer using mineral attack by media concentrated sulfurics.
  • This steel also makes it possible to carry out any part subject to abrasion / corrosion in environments chlorides and / or acids.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
  • Preventing Corrosion Or Incrustation Of Metals (AREA)
  • Paper (AREA)
  • Physical Vapour Deposition (AREA)
  • Heat Treatment Of Steel (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
EP94401110A 1993-05-28 1994-05-18 Acier inoxydable austénitique à haute résistance à la corrosion par les milieux chlorurés et sulfuriques et utilisations Expired - Lifetime EP0626460B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9306468A FR2705689B1 (fr) 1993-05-28 1993-05-28 Acier inoxydable austénitique à haute résistance à la corrosion par les milieux chlorurés et sulfuriques et utilisations.
FR9306468 1993-05-28

Publications (2)

Publication Number Publication Date
EP0626460A1 EP0626460A1 (fr) 1994-11-30
EP0626460B1 true EP0626460B1 (fr) 2000-02-02

Family

ID=9447577

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94401110A Expired - Lifetime EP0626460B1 (fr) 1993-05-28 1994-05-18 Acier inoxydable austénitique à haute résistance à la corrosion par les milieux chlorurés et sulfuriques et utilisations

Country Status (11)

Country Link
US (1) US5480609A (pt)
EP (1) EP0626460B1 (pt)
AT (1) ATE189483T1 (pt)
DE (1) DE69422850T2 (pt)
DK (1) DK0626460T3 (pt)
ES (1) ES2141806T3 (pt)
FI (1) FI110010B (pt)
FR (1) FR2705689B1 (pt)
GR (1) GR3033108T3 (pt)
NO (1) NO302623B1 (pt)
PT (1) PT626460E (pt)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2711674B1 (fr) * 1993-10-21 1996-01-12 Creusot Loire Acier inoxydable austénitique à hautes caractéristiques ayant une grande stabilité structurale et utilisations.
US5841046A (en) * 1996-05-30 1998-11-24 Crucible Materials Corporation High strength, corrosion resistant austenitic stainless steel and consolidated article
WO1999061673A1 (en) * 1998-05-27 1999-12-02 U.S. Department Of Commerce And National Institute Of Standards And Technology High nitrogen stainless steel
DE60111925T2 (de) * 2000-03-15 2006-04-20 Huntington Alloys Corp., Huntington Korrosionsbeständige austenitische legierung
SE520027C2 (sv) * 2000-05-22 2003-05-13 Sandvik Ab Austenitisk legering
US20040156737A1 (en) * 2003-02-06 2004-08-12 Rakowski James M. Austenitic stainless steels including molybdenum
SE527177C2 (sv) * 2001-09-25 2006-01-17 Sandvik Intellectual Property Användning av ett austenitiskt rostfritt stål
SE525252C2 (sv) * 2001-11-22 2005-01-11 Sandvik Ab Superaustenitiskt rostfritt stål samt användning av detta stål
SE528008C2 (sv) * 2004-12-28 2006-08-01 Outokumpu Stainless Ab Austenitiskt rostfritt stål och stålprodukt
US7658883B2 (en) * 2006-12-18 2010-02-09 Schlumberger Technology Corporation Interstitially strengthened high carbon and high nitrogen austenitic alloys, oilfield apparatus comprising same, and methods of making and using same
US7985304B2 (en) * 2007-04-19 2011-07-26 Ati Properties, Inc. Nickel-base alloys and articles made therefrom
US8430075B2 (en) * 2008-12-16 2013-04-30 L.E. Jones Company Superaustenitic stainless steel and method of making and use thereof
MY180070A (en) * 2011-05-26 2020-11-20 United Pipelines Asia Pacific Pte Ltd Austenitic stainless steel
US20150337419A1 (en) * 2014-05-20 2015-11-26 Crs Holdings Inc. Austenitic Stainless Steel Alloy
US10179943B2 (en) 2014-07-18 2019-01-15 General Electric Company Corrosion resistant article and methods of making
US10968504B2 (en) * 2015-10-19 2021-04-06 Sandvik Intellectual Property Ab Austenitic stainless alloy
CN118326284B (zh) * 2024-06-13 2024-08-16 成都斯杰化工机械有限公司 一种耐腐蚀耐汽蚀不锈钢及其制备方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55100966A (en) * 1979-01-23 1980-08-01 Kobe Steel Ltd High strength austenite stainless steel having excellent corrosion resistance
SE441455B (sv) * 1983-10-21 1985-10-07 Avesta Ab Stal av austenitisk typ
CA1263041A (en) * 1984-11-13 1989-11-21 William Lawrence Mankins Nickel-chromium-molybdenum alloy
US4765957A (en) * 1986-12-29 1988-08-23 Carondelet Foundry Company Alloy resistant to seawater and other corrosive fluids
DE3716665A1 (de) * 1987-05-19 1988-12-08 Vdm Nickel Tech Korrosionsbestaendige legierung
EP0342574A1 (de) * 1988-05-17 1989-11-23 Thyssen Edelstahlwerke AG Korrosionsbeständiger austenitischer Stahl
US4981646A (en) * 1989-04-17 1991-01-01 Carondelet Foundry Company Corrosion resistant alloy
SE465373B (sv) * 1990-01-15 1991-09-02 Avesta Ab Austenitiskt rostfritt staal

Also Published As

Publication number Publication date
NO941991L (no) 1994-11-29
FR2705689A1 (fr) 1994-12-02
EP0626460A1 (fr) 1994-11-30
FI942490A0 (fi) 1994-05-27
ES2141806T3 (es) 2000-04-01
NO941991D0 (no) 1994-05-27
GR3033108T3 (en) 2000-08-31
PT626460E (pt) 2000-06-30
FI110010B (fi) 2002-11-15
FR2705689B1 (fr) 1995-08-25
DE69422850T2 (de) 2000-08-17
DK0626460T3 (da) 2000-05-01
ATE189483T1 (de) 2000-02-15
US5480609A (en) 1996-01-02
FI942490A (fi) 1994-11-29
NO302623B1 (no) 1998-03-30
DE69422850D1 (de) 2000-03-09

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