EP0626460A1 - Austenitisches rostfreies Stahl mit hoher Korrosionsbeständigkeit in Chlorid- und Schwefelenthaltende Umgebung, und seine Verwendung - Google Patents

Austenitisches rostfreies Stahl mit hoher Korrosionsbeständigkeit in Chlorid- und Schwefelenthaltende Umgebung, und seine Verwendung Download PDF

Info

Publication number: EP0626460A1
Authority: EP; European Patent Office
Prior art keywords: stainless steel; austenitic stainless; steel according; manufacture; steel
Prior art date: 1993-05-28
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

Application number

EP94401110A

Other languages

English (en)

French (fr)

Other versions

EP0626460B1 (de

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

Priority date (The priority date 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 date listed.)

1993-05-28

Filing date

1994-05-18

Publication date

1994-11-30

1994-05-18 Application filed by Creusot Loire SA, Creusot Loire Industrie SA filed Critical Creusot Loire SA

1994-11-30 Publication of EP0626460A1 publication Critical patent/EP0626460A1/de

2000-02-02 Application granted granted Critical

2000-02-02 Publication of EP0626460B1 publication Critical patent/EP0626460B1/de

2014-05-18 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

238000005260 corrosion Methods 0.000 title claims abstract description 49
230000007797 corrosion Effects 0.000 title claims abstract description 49
229910000963 austenitic stainless steel Inorganic materials 0.000 title claims description 17
229910000831 Steel Inorganic materials 0.000 title abstract description 47
239000010959 steel Substances 0.000 title abstract description 47
VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 title 1
238000004519 manufacturing process Methods 0.000 claims abstract description 31
229910052759 nickel Inorganic materials 0.000 claims abstract description 17
229910052750 molybdenum Inorganic materials 0.000 claims abstract description 16
229910052804 chromium Inorganic materials 0.000 claims abstract description 15
229910052757 nitrogen Inorganic materials 0.000 claims abstract description 14
239000000126 substance Substances 0.000 claims abstract description 13
239000013535 sea water Substances 0.000 claims abstract description 8
229920001131 Pulp (paper) Polymers 0.000 claims abstract description 5
229910052710 silicon Inorganic materials 0.000 claims abstract description 5
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
239000010949 copper Substances 0.000 claims description 14
239000000203 mixture Substances 0.000 claims description 12
238000001914 filtration Methods 0.000 claims description 11
239000007789 gas Substances 0.000 claims description 11
229910052802 copper Inorganic materials 0.000 claims description 10
229910052782 aluminium Inorganic materials 0.000 claims description 8
229910052758 niobium Inorganic materials 0.000 claims description 8
229910052720 vanadium Inorganic materials 0.000 claims description 8
238000004061 bleaching Methods 0.000 claims description 7
239000012535 impurity Substances 0.000 claims description 7
229910052742 iron Inorganic materials 0.000 claims description 7
238000000034 method Methods 0.000 claims description 7
238000005406 washing Methods 0.000 claims description 7
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
229910052796 boron Inorganic materials 0.000 claims description 6
239000000779 smoke Substances 0.000 claims description 6
LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 claims description 5
239000002253 acid Substances 0.000 claims description 5
230000002378 acidificating effect Effects 0.000 claims description 5
NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 4
229910052698 phosphorus Inorganic materials 0.000 claims description 4
229910052717 sulfur Inorganic materials 0.000 claims description 4
239000011593 sulfur Substances 0.000 claims description 4
150000001805 chlorine compounds Chemical class 0.000 claims description 3
239000010791 domestic waste Substances 0.000 claims description 3
230000004224 protection Effects 0.000 claims description 3
150000007513 acids Chemical class 0.000 claims description 2
238000004056 waste incineration Methods 0.000 claims 1
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 31
239000011651 chromium Substances 0.000 abstract description 20
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 18
ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 8
VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 6
239000011733 molybdenum Substances 0.000 abstract description 5
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
229910052799 carbon Inorganic materials 0.000 abstract description 4
239000003517 fume Substances 0.000 abstract description 4
238000005202 decontamination Methods 0.000 abstract 1
230000003588 decontaminative effect Effects 0.000 abstract 1
WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract 1
239000003921 oil Substances 0.000 abstract 1
239000010703 silicon Substances 0.000 abstract 1
239000011572 manganese Substances 0.000 description 6
239000010955 niobium Substances 0.000 description 6
238000001556 precipitation Methods 0.000 description 5
ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 4
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
OSVXSBDYLRYLIG-UHFFFAOYSA-N chlorine dioxide Inorganic materials O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 4
WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 description 4
ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 3
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
235000019398 chlorine dioxide Nutrition 0.000 description 3
238000002485 combustion reaction Methods 0.000 description 3
150000001247 metal acetylides Chemical class 0.000 description 3
GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 3
238000005204 segregation Methods 0.000 description 3
229910001220 stainless steel Inorganic materials 0.000 description 3
GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 3
KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
238000007792 addition Methods 0.000 description 2
239000003518 caustics Substances 0.000 description 2
239000000460 chlorine Substances 0.000 description 2
QBWCMBCROVPCKQ-UHFFFAOYSA-N chlorous acid Chemical compound OCl=O QBWCMBCROVPCKQ-UHFFFAOYSA-N 0.000 description 2
238000009792 diffusion process Methods 0.000 description 2
230000000694 effects Effects 0.000 description 2
230000002349 favourable effect Effects 0.000 description 2
238000005242 forging Methods 0.000 description 2
229930195733 hydrocarbon Natural products 0.000 description 2
150000002430 hydrocarbons Chemical class 0.000 description 2
229910052748 manganese Inorganic materials 0.000 description 2
208000031968 Cadaver Diseases 0.000 description 1
239000004155 Chlorine dioxide Substances 0.000 description 1
UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
241001080024 Telles Species 0.000 description 1
238000005299 abrasion Methods 0.000 description 1
239000006096 absorbing agent Substances 0.000 description 1
238000005275 alloying Methods 0.000 description 1
238000009835 boiling Methods 0.000 description 1
229910052801 chlorine Inorganic materials 0.000 description 1
229910001902 chlorine oxide Inorganic materials 0.000 description 1
150000001875 compounds Chemical class 0.000 description 1
238000001816 cooling Methods 0.000 description 1
229940082150 encore Drugs 0.000 description 1
239000003337 fertilizer Substances 0.000 description 1
238000005098 hot rolling Methods 0.000 description 1
239000001257 hydrogen Substances 0.000 description 1
229910052739 hydrogen Inorganic materials 0.000 description 1
238000009854 hydrometallurgy Methods 0.000 description 1
150000004767 nitrides Chemical class 0.000 description 1
230000001590 oxidative effect Effects 0.000 description 1
150000002978 peroxides Chemical class 0.000 description 1
239000003208 petroleum Substances 0.000 description 1
238000002360 preparation method Methods 0.000 description 1
238000000746 purification Methods 0.000 description 1
239000011819 refractory material Substances 0.000 description 1
239000010935 stainless steel Substances 0.000 description 1
235000011149 sulphuric acid Nutrition 0.000 description 1
229910000601 superalloy Inorganic materials 0.000 description 1

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 an austenitic stainless steel with high mechanical strength and high corrosion resistance.
stainless steels with high mechanical strength and high corrosion resistance are used in chlorinated and sulfuric media or even in both chlorinated and sulfuric media.
These stainless steels 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 best performance in terms of combination of mechanical characteristics 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 a high mechanical characteristic and high corrosion resistance, the chemical composition of which comprises by weight: 20% ⁇ Cr ⁇ 30% 25% ⁇ Ni ⁇ 32% 3% ⁇ MB ⁇ 7% 0.35% ⁇ N ⁇ 0.8% 0.5% ⁇ Mn ⁇ 5.4% C ⁇ 0.06% if ⁇ 1%, the rest, with the exception of iron, being constituted by impurities resulting from the production.
the carbon content is less than 0.04%.
this steel can also comprise from 0.5% to 3% of copper.
this steel contains less than 0.010% sulfur.
B 0.0001 to 0.003%
Nb 0.001 to 0.3%
V from 0.001 at 0.3%
Al from 0.001 to 0.1%.
this steel contains: 23% ⁇ Cr ⁇ 28% 25% ⁇ Ni ⁇ 28% 4.5% ⁇ MB ⁇ 7%.
the composition of the steel according to the invention is as follows: 25% ⁇ Cr ⁇ 26% 25% ⁇ Ni ⁇ 26% 6% ⁇ MB ⁇ 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 of the steel according to the invention for the manufacture of equipment for decontaminating smoke from thermal power plants and from plants for the incineration of household waste, in particular gas washing towers. or smoke, gas or smoke pipes and chimneys; for the manufacture of delignification equipment, in particular by the bisulfite process, of filtration and bleaching of paper pulp; for the manufacture of equipment for the chemical industry in chlorinated or acidic environments and in particular for the manufacture of tanks, reservoirs, reactors, pump casing tubes and pump shafts; for the manufacture of off-shore platform equipment subject to corrosion by seawater and / or hydrocarbons and in particular flare supports, heat exchangers, separators, tubular plates, piping for transporting seawater, piping used for the transport of hydrocarbons, elements for protecting pylon areas located in the vicinity of the free surface of the sea, rods, pump shafts, flanges connection, well heads, manifolds (risers) and risers; for the manufacture of road or rail transport tanks of highly corrosive
Such steel should contain less than 0.06% carbon to avoid precipitation of carbides at the grain boundaries which deteriorate the corrosion resistance and it is preferable to limit this content to 0.04% and even better to 0.03 %.
Steel always contains a little sulfur which is favorable to machinability but which favors pitting corrosion, so it is preferable to have a sulfur content of less than 0.01%.
copper can be added between 0.5% and 3% and preferably between 1% and 2%; copper also has the advantage of improving machinability.
niobium or vanadium can be added.
a steel which contains in its most general form: 20% ⁇ Cr ⁇ 30% 25% ⁇ Ni ⁇ 32% 3% ⁇ MB ⁇ 7% 0.35% ⁇ N ⁇ 0.8% 0.5% ⁇ Mn ⁇ 5.4% C ⁇ 0.06% If ⁇ 1%, the rest, with the exception of iron, being constituted by impurities resulting from the production.
Additions of copper, vanadium, niobium, boron, aluminum are optional and can be done 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. It is therefore preferable, in all cases, to limit the areas of chromium, nickel and molybdenum to: 23% ⁇ Cr ⁇ 28% 25% ⁇ Ni ⁇ 28% 4.5% ⁇ MB ⁇ 7%.
This steel may also contain Nb, V, B or Al as indicated above.
This steel was produced in the form of a bar 500 mm in diameter obtained after air cooling.
a localized corrosion test in a chlorinated medium according to the American standard ASTM G 48 gave a pitting temperature greater than or equal to the boiling point.
This steel has an additional advantage which comes from the fact that the product A x R of the elongation at break by the breaking limit is very high (approximately twice as much as for the steels of the prior art used for transport) so that the impact resistance of the walls produced with this steel is very high and in particular much higher than for steels of the prior art.
This characteristic has the advantage of making it possible to produce tanks, receptacles or pipes for the transport of corrosive products which are much safer in the event of impact than 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, junction pieces such as flanges, manifolds (manifolds), pipelines (flow lines), separators and tanks for road or rail transport, for industries in which these equipments are subjected to very severe corrosions by pure chlorinated and / or sulfuric media or polluted and in particular for off-shore platforms of petroleum exploitations, for pollution abatement facilities from combustion fumes from thermal power stations or from 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 equipment nts of hydrometallurgy and fertilizer industry using attack on ores by concentrated sulfuric media.
This steel also makes it possible to produce any part subject to abrasion / corrosion in chlorinated and / or acidic environments.
the person skilled in the art is constantly looking for steel which has the highest possible mechanical characteristics and the highest possible corrosion resistance without, however, its price being exorbitant in order to produce the most reliable equipment. possible with the longest possible service life and at a price compatible with their industrial operation.
the steel according to the invention by virtue of its chemical composition and its properties, is much more advantageous than nickel-based superalloys.

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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)
Structures Of Non-Positive Displacement Pumps (AREA)
Heat Treatment Of Steel (AREA)
Physical Vapour Deposition (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

EP94401110A 1993-05-28 1994-05-18 Austenitischer rostfreie Stahl mit hoher Korrosionsbeständigkeit in chlorid- und schwefelenthaltende Umgebung, und seine Verwendung Expired - Lifetime EP0626460B1 (de)

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 true EP0626460A1 (de)	1994-11-30
EP0626460B1 EP0626460B1 (de)	2000-02-02

Family

ID=9447577

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP94401110A Expired - Lifetime EP0626460B1 (de)	1993-05-28	1994-05-18	Austenitischer rostfreie Stahl mit hoher Korrosionsbeständigkeit in chlorid- und schwefelenthaltende Umgebung, und seine Verwendung

Country Status (11)

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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0810296A1 (de) *	1996-05-30	1997-12-03	Crucible Materials Corporation	Hochfester und korrosionsbeständiger rostfreier austenitischer Stahl und konsolidierter Artikel
WO2012161661A1 (en)	2011-05-26	2012-11-29	United Pipelines Asia Pacific Pte Limited	Austenitic stainless steel

Families Citing this family (16)

* 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.
WO1999061673A1 (en) *	1998-05-27	1999-12-02	U.S. Department Of Commerce And National Institute Of Standards And Technology	High nitrogen stainless steel
WO2001068929A1 (en) *	2000-03-15	2001-09-20	Huntington Alloys Corporation	Corrosion resistant austenitic alloy
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
RU2254394C1 (ru) *	2004-03-16	2005-06-20	Открытое акционерное общество "Синарский трубный завод" (ОАО "СинТЗ")	Высокопрочная аустенитная нержавеющая сталь и способ окончательной упрочняющей обработки изделий из нее
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
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
CN108138295B (zh) *	2015-10-19	2021-09-14	山特维克材料技术公司	新型奥氏体不锈合金
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

Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0142015A1 (de) *	1983-10-21	1985-05-22	Avesta Aktiebolag	Austenitischer Stahl
EP0184038A1 (de) *	1984-11-13	1986-06-11	Inco Alloys International, Inc.	Eisen-Nickel-Chrom-Molybdänlegierung
EP0292061A1 (de) *	1987-05-19	1988-11-23	VDM Nickel-Technologie Aktiengesellschaft	Korrosionsbeständige 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
EP0438992A1 (de) *	1990-01-15	1991-07-31	Avesta Sheffield Aktiebolag	Austenitischer rostfreier Stahl

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* 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
US4765957A (en) *	1986-12-29	1988-08-23	Carondelet Foundry Company	Alloy resistant to seawater and other corrosive fluids

1993
- 1993-05-28 FR FR9306468A patent/FR2705689B1/fr not_active Expired - Lifetime
1994
- 1994-05-18 PT PT94401110T patent/PT626460E/pt unknown
- 1994-05-18 DE DE69422850T patent/DE69422850T2/de not_active Expired - Fee Related
- 1994-05-18 AT AT94401110T patent/ATE189483T1/de not_active IP Right Cessation
- 1994-05-18 DK DK94401110T patent/DK0626460T3/da active
- 1994-05-18 ES ES94401110T patent/ES2141806T3/es not_active Expired - Lifetime
- 1994-05-18 EP EP94401110A patent/EP0626460B1/de not_active Expired - Lifetime
- 1994-05-27 US US08/250,687 patent/US5480609A/en not_active Expired - Fee Related
- 1994-05-27 NO NO941991A patent/NO302623B1/no unknown
- 1994-05-27 FI FI942490A patent/FI110010B/fi active
2000
- 2000-03-29 GR GR20000400797T patent/GR3033108T3/el not_active IP Right Cessation

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0142015A1 (de) *	1983-10-21	1985-05-22	Avesta Aktiebolag	Austenitischer Stahl
EP0184038A1 (de) *	1984-11-13	1986-06-11	Inco Alloys International, Inc.	Eisen-Nickel-Chrom-Molybdänlegierung
EP0292061A1 (de) *	1987-05-19	1988-11-23	VDM Nickel-Technologie Aktiengesellschaft	Korrosionsbeständige 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
EP0438992A1 (de) *	1990-01-15	1991-07-31	Avesta Sheffield Aktiebolag	Austenitischer rostfreier Stahl

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0810296A1 (de) *	1996-05-30	1997-12-03	Crucible Materials Corporation	Hochfester und korrosionsbeständiger rostfreier austenitischer Stahl und konsolidierter Artikel
US5841046A (en) *	1996-05-30	1998-11-24	Crucible Materials Corporation	High strength, corrosion resistant austenitic stainless steel and consolidated article
WO2012161661A1 (en)	2011-05-26	2012-11-29	United Pipelines Asia Pacific Pte Limited	Austenitic stainless steel
EP2714955A4 (de) *	2011-05-26	2015-01-07	United Pipelines Ltd	Austenitischer edelstahl
US9803267B2 (en)	2011-05-26	2017-10-31	Upl, L.L.C.	Austenitic stainless steel

Also Published As

Publication number	Publication date
PT626460E (pt)	2000-06-30
FI942490A0 (fi)	1994-05-27
DE69422850D1 (de)	2000-03-09
ES2141806T3 (es)	2000-04-01
NO302623B1 (no)	1998-03-30
EP0626460B1 (de)	2000-02-02
FR2705689A1 (fr)	1994-12-02
NO941991L (no)	1994-11-29
FI942490L (fi)	1994-11-29
ATE189483T1 (de)	2000-02-15
US5480609A (en)	1996-01-02
GR3033108T3 (en)	2000-08-31
FR2705689B1 (fr)	1995-08-25
FI110010B (fi)	2002-11-15
DK0626460T3 (da)	2000-05-01
DE69422850T2 (de)	2000-08-17
NO941991D0 (no)	1994-05-27

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