EP0200862A1 - Application d'un alliage fer-chrome-nickel résistant à l'acide sulfurique hautement concentré et à l'oléum - Google Patents

Application d'un alliage fer-chrome-nickel résistant à l'acide sulfurique hautement concentré et à l'oléum Download PDF

Info

Publication number: EP0200862A1
Authority: EP; European Patent Office
Prior art keywords: sulfuric acid; weight; resistant; chromium; alloy according
Prior art date: 1985-03-09
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

EP86102555A

Other languages

German (de)

English (en)

Other versions

EP0200862B1 (fr

Inventor

Helmut Dipl.-Ing. Diekmann

Günter Pütz

Klaus-Peter Grabowski

Kurt Wilhelm Dr. Eichenhofer

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.)

Bayer AG

Original Assignee

Bayer AG

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.)

1985-03-09

Filing date

1986-02-27

Publication date

1986-11-12

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6264782&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0200862(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1986-02-27 Application filed by Bayer AG filed Critical Bayer AG

1986-02-27 Priority to AT86102555T priority Critical patent/ATE34779T1/de

1986-11-12 Publication of EP0200862A1 publication Critical patent/EP0200862A1/fr

1988-06-01 Application granted granted Critical

1988-06-01 Publication of EP0200862B1 publication Critical patent/EP0200862B1/fr

Status Expired legal-status Critical Current

Links

229910000990 Ni alloy Inorganic materials 0.000 title description 2
LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 title 1
BIJOYKCOMBZXAE-UHFFFAOYSA-N chromium iron nickel Chemical compound [Cr].[Fe].[Ni] BIJOYKCOMBZXAE-UHFFFAOYSA-N 0.000 title 1
QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 59
239000000463 material Substances 0.000 claims abstract description 30
239000000956 alloy Substances 0.000 claims abstract description 26
229910045601 alloy Inorganic materials 0.000 claims abstract description 25
PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 16
VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 14
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 12
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 12
229910052804 chromium Inorganic materials 0.000 claims abstract description 12
239000011651 chromium Substances 0.000 claims abstract description 12
NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 9
229910052759 nickel Inorganic materials 0.000 claims abstract description 8
XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 7
229910052710 silicon Inorganic materials 0.000 claims abstract description 7
229910052717 sulfur Inorganic materials 0.000 claims abstract description 7
239000011593 sulfur Substances 0.000 claims abstract description 7
GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims abstract description 7
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 6
RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 6
OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 6
RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 6
229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 6
229910052799 carbon Inorganic materials 0.000 claims abstract description 6
GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 6
229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
229910052720 vanadium Inorganic materials 0.000 claims abstract description 6
LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 6
229910052742 iron Inorganic materials 0.000 claims abstract description 5
239000010703 silicon Substances 0.000 claims abstract description 5
229910052715 tantalum Inorganic materials 0.000 claims abstract description 5
229910052802 copper Inorganic materials 0.000 claims abstract description 4
239000010949 copper Substances 0.000 claims abstract description 4
229910052758 niobium Inorganic materials 0.000 claims abstract description 4
239000010955 niobium Substances 0.000 claims abstract description 4
229910052698 phosphorus Inorganic materials 0.000 claims abstract description 4
239000011574 phosphorus Substances 0.000 claims abstract description 4
239000010936 titanium Substances 0.000 claims abstract description 4
229910052719 titanium Inorganic materials 0.000 claims abstract description 4
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 claims abstract 2
238000004519 manufacturing process Methods 0.000 claims description 6
238000010521 absorption reaction Methods 0.000 claims description 5
239000007789 gas Substances 0.000 claims description 4
238000001035 drying Methods 0.000 claims description 3
239000002274 desiccant Substances 0.000 claims description 2
239000003595 mist Substances 0.000 claims description 2
MTJGVAJYTOXFJH-UHFFFAOYSA-N 3-aminonaphthalene-1,5-disulfonic acid Chemical compound C1=CC=C(S(O)(=O)=O)C2=CC(N)=CC(S(O)(=O)=O)=C21 MTJGVAJYTOXFJH-UHFFFAOYSA-N 0.000 claims 1
238000005260 corrosion Methods 0.000 description 17
230000007797 corrosion Effects 0.000 description 17
239000002253 acid Substances 0.000 description 5
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 4
ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 4
229910052750 molybdenum Inorganic materials 0.000 description 4
239000011733 molybdenum Substances 0.000 description 4
239000006096 absorbing agent Substances 0.000 description 3
230000003628 erosive effect Effects 0.000 description 3
238000000034 method Methods 0.000 description 3
229910001018 Cast iron Inorganic materials 0.000 description 2
241001295925 Gegenes Species 0.000 description 2
RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
239000004411 aluminium Substances 0.000 description 2
238000006243 chemical reaction Methods 0.000 description 2
229910052748 manganese Inorganic materials 0.000 description 2
239000011572 manganese Substances 0.000 description 2
AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 description 2
239000001117 sulphuric acid Substances 0.000 description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
238000005303 weighing Methods 0.000 description 2
238000003466 welding Methods 0.000 description 2
229910001149 41xx steel Inorganic materials 0.000 description 1
229910000831 Steel Inorganic materials 0.000 description 1
239000004809 Teflon Substances 0.000 description 1
229920006362 Teflon® Polymers 0.000 description 1
230000015572 biosynthetic process Effects 0.000 description 1
239000011449 brick Substances 0.000 description 1
238000001816 cooling Methods 0.000 description 1
230000001419 dependent effect Effects 0.000 description 1
238000002474 experimental method Methods 0.000 description 1
239000004744 fabric Substances 0.000 description 1
229910052739 hydrogen Inorganic materials 0.000 description 1
239000007788 liquid Substances 0.000 description 1
229910052751 metal Inorganic materials 0.000 description 1
239000002184 metal Substances 0.000 description 1
150000002739 metals Chemical class 0.000 description 1
230000003647 oxidation Effects 0.000 description 1
238000007254 oxidation reaction Methods 0.000 description 1
239000004033 plastic Substances 0.000 description 1
229920003023 plastic Polymers 0.000 description 1
125000006850 spacer group Chemical group 0.000 description 1
229910001220 stainless steel Inorganic materials 0.000 description 1
239000010959 steel Substances 0.000 description 1
239000000126 substance Substances 0.000 description 1

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
- F28F21/08—Constructions of heat-exchange apparatus characterised by the selection of particular materials of metal
- F28F21/081—Heat exchange elements made from metals or metal alloys
- F28F21/082—Heat exchange elements made from metals or metal alloys from steel or ferrous alloys
- 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

Definitions

sulfuric acid generally takes place via the sulfur dioxide stage, from which sulfur trioxide is then formed by oxidation, which is then absorbed in concentrated sulfuric acid, where it reacts with water to form further sulfuric acid.
Concentrated sulfuric acid and oleum are an extremely aggressive medium, especially in the higher temperature range. It is therefore highly desirable that all of the components of a sulfuric acid manufacturing plant, such as contact towers, heat exchangers, pipes, valves, pumps, manifolds, and the like, which come into contact with the sulfuric acid, are made of corrosion-resistant materials. Cast iron, brick, plastics and corrosion-resistant alloys are currently in use as such materials.
the metallic components used are subject to considerably rapid corrosion. If no special precautions are taken or if they are not alloyed with high alloys, then they have a limited lifespan.
One way to reduce corrosion is to use anodic protection. Corrosion can be reduced considerably by the electrochemical formation of an oxide film. This means that stainless steels can also be used at acid temperatures above 120 ° C.
tantalum for the production of corrosion-resistant materials (Chem. Ind. XXXV / 6, 1983, D.F. Lupton: special metals in chemical apparatus engineering) is countered by its high price, given the low availability.
DE-PS 2 154 126 describes the use of a molybdenum-containing austenitic nickel alloy as a material resistant to hot concentrated sulfuric acid. Due to the difficult processability, the use is limited to parts such as shafts, bearings, pumps, valves and the like.
Silicon-containing steels are known from DE-OS 3 320 527. However, their disadvantage is their limited usability due to the difficult handling of the material.
European patent application 1 30967 discloses 4 materials for use in hot, highly concentrated sulfuric acid, of which only the Alloy 26-1 (material no. 1.4131, short name X1 CrMo 26 1) shows good corrosion resistance under the required conditions.
a disadvantage of this factory fabric is its poor processability. Among other things, it requires particularly high requirements with regard to welding processing.
chromium-containing alloys with chromium contents of 21 to 35% by weight which contain 30 to 70% by weight of iron and optionally nickel up to 40% by weight, meet these requirements in an outstanding manner.
the alloys according to the invention are free of molybdenum. However, compared to the known molybdenum-containing alloys, these are still significantly improved with regard to their corrosion resistance.
the alloys according to the invention are also less expensive than those containing Mo.
the nickel content is jointly responsible for the good processability of the alloys according to the invention.
This invention therefore also relates to the use according to the invention, according to which the material is resistant to sulfuric acid up to concentrations of 100, preferably between 98.0 and 99.5% by weight.
the material is resistant to sulfuric acid at a concentration of 100 to 122.5% by weight (oleum). Due to its superior corrosion behavior, use in the oleum area is also recommended for economic and safety reasons.
the unusual temperature behavior of the alloy according to the invention is of essential importance for use as a sulfur-resistant material.
Materials made from it are resistant to sulfuric acids at temperatures up to 350 o C, preferably from 50 to 250 ° C, but especially from 80 to 190 ° C.
the layering is in a ferritic, ferritic-austenitic or austenitic structure.
temperatures above approximately 80 ° C. are aimed in particular in the area of intermediate and final absorption, the heat exchange serving to preheat the feed water or, at temperatures above 110 ° C., to produce low-pressure steam.
the materials according to the invention are also very suitable for this.
a further embodiment of the use according to the invention is thus that apparatus made from the alloy in the area of the intermediate and final absorption of sulfuric acid-producing plants at temperatures from 80 to 190 ° C. and sulfuric acid concentrations from 98.0 to 99.5% by weight H 2 S0 4 can be used.
the duration of the experiment was 7 days.
the removal rates were determined by gravimetric differential weighing and conversion to mmla.
the flow rate was approx. 1 m / sec, the test duration was 42 - 60 d.
the amount of acid circulated was approx. 250 m 3 / h.
the dimensions of the rectangular samples were 50 x 15 x 3 mm.
the corrosion resistance in mm / a was determined by gravimetric weighing and conversion.
a piece of pipe with a length of 80 cm (44.5 x 1.6 mm dimension) made of material 1.4335 was used in the bypass of the acid circuit of an intermediate absorber operated as a heat absorber and 56 days at 125 - 135 0 C and a sulfuric acid concentration of 98.5-99.5% operated.
the flow rate was set to approximately 1 m / sec.
the following materials were stored in 99% H 2 S0 4 at different temperatures for 7 days.
the following types of erosion resulted, measured in mm / a.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
Chemical & Material Sciences (AREA)
Materials Engineering (AREA)
General Engineering & Computer Science (AREA)
Thermal Sciences (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Physics & Mathematics (AREA)
Physical Or Chemical Processes And Apparatus (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Carbon And Carbon Compounds (AREA)
Manufacture And Refinement Of Metals (AREA)
Treatment Of Steel In Its Molten State (AREA)
Catalysts (AREA)
Rigid Pipes And Flexible Pipes (AREA)
Heat Treatment Of Articles (AREA)
High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Electroplating And Plating Baths Therefor (AREA)
Heat Treatment Of Steel (AREA)
Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Secondary Cells (AREA)
Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Glass Compositions (AREA)
Plural Heterocyclic Compounds (AREA)
Luminescent Compositions (AREA)
Pyrane Compounds (AREA)
Preventing Corrosion Or Incrustation Of Metals (AREA)

EP86102555A 1985-03-09 1986-02-27 Application d'un alliage fer-chrome-nickel résistant à l'acide sulfurique hautement concentré et à l'oléum Expired EP0200862B1 (fr)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
AT86102555T ATE34779T1 (de)	1985-03-09	1986-02-27	Verwendung einer gegen hochkonzentrierte schwefelsaeure und oleum bestaendigen eisen-chrom- nickel-legierung.

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE3508532		1985-03-09
DE19853508532 DE3508532A1 (de)	1985-03-09	1985-03-09	Verwendung einer chromhaltigen legierung

Publications (2)

Publication Number	Publication Date
EP0200862A1 true EP0200862A1 (fr)	1986-11-12
EP0200862B1 EP0200862B1 (fr)	1988-06-01

Family

ID=6264782

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP86102555A Expired EP0200862B1 (fr)	1985-03-09	1986-02-27	Application d'un alliage fer-chrome-nickel résistant à l'acide sulfurique hautement concentré et à l'oléum

Country Status (8)

Country	Link
EP (1)	EP0200862B1 (fr)
JP (1)	JPS61207551A (fr)
AT (1)	ATE34779T1 (fr)
AU (1)	AU583898B2 (fr)
CA (1)	CA1273230A (fr)
DE (2)	DE3508532A1 (fr)
ES (1)	ES8802377A1 (fr)
FI (1)	FI80481C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0317864B1 (fr) *	1987-11-25	1992-03-04	Bayer Ag	Mise en oeuvre d'un aliage contenant du chrome
DE4342188A1 (de) *	1993-12-10	1995-06-14	Bayer Ag	Austenitische Legierungen und deren Verwendung

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3830365C2 (de) *	1988-09-07	1996-06-27	Metallgesellschaft Ag	Verwendung von ferritischen Chrom - Molybdän-Stählen als gegen konzentrierte Schwefelsäure beständigem Werkstoff
FR2939052B1 (fr) *	2008-12-01	2010-12-10	Rhodia Operations	Installation de cristallisation d'acide adipique
EA202190631A1 (ru)	2018-08-29	2021-06-09	Кеметикс Инк.	Аустенитный нержавеющий сплав с превосходной коррозионной стойкостью

Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3649187A (en) *	1970-02-09	1972-03-14	Monsanto Co	Corrosion resistant apparatus
DE2154126A1 (de) *	1970-10-29	1972-05-04	Chas S Lewis U Co Inc	Korrosions-resistente Legierungen
US3844774A (en) *	1973-09-24	1974-10-29	Carondelet Foundry Co	Corrosion-resistant alloys
US3947266A (en) *	1974-05-17	1976-03-30	Carondelet Foundry Company	Corrosion-resistant alloys
US4329173A (en) *	1980-03-31	1982-05-11	Carondelet Foundry Company	Alloy resistant to corrosion

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS5435171B2 (fr) *	1973-07-13	1979-10-31
JPS5538957A (en) *	1978-09-13	1980-03-18	Japan Steel Works Ltd:The	Austenitic stainless cast steel
US4670242A (en) *	1984-11-09	1987-06-02	Monsanto Company	Heat recovery from concentrated sulfuric acid
US4576813A (en) *	1983-07-05	1986-03-18	Monsanto Company	Heat recovery from concentrated sulfuric acid

1985
- 1985-03-09 DE DE19853508532 patent/DE3508532A1/de not_active Withdrawn
1986
- 1986-02-27 EP EP86102555A patent/EP0200862B1/fr not_active Expired
- 1986-02-27 AT AT86102555T patent/ATE34779T1/de not_active IP Right Cessation
- 1986-02-27 DE DE8686102555T patent/DE3660261D1/de not_active Expired
- 1986-03-06 FI FI860944A patent/FI80481C/fi not_active IP Right Cessation
- 1986-03-07 ES ES552799A patent/ES8802377A1/es not_active Expired
- 1986-03-07 CA CA000503590A patent/CA1273230A/fr not_active Expired - Lifetime
- 1986-03-07 JP JP61048722A patent/JPS61207551A/ja active Pending
- 1986-03-07 AU AU54434/86A patent/AU583898B2/en not_active Ceased

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3649187A (en) *	1970-02-09	1972-03-14	Monsanto Co	Corrosion resistant apparatus
DE2154126A1 (de) *	1970-10-29	1972-05-04	Chas S Lewis U Co Inc	Korrosions-resistente Legierungen
US3844774A (en) *	1973-09-24	1974-10-29	Carondelet Foundry Co	Corrosion-resistant alloys
US3947266A (en) *	1974-05-17	1976-03-30	Carondelet Foundry Company	Corrosion-resistant alloys
US4329173A (en) *	1980-03-31	1982-05-11	Carondelet Foundry Company	Alloy resistant to corrosion

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
CHEMICAL ABSTRACTS, Band 100, Nr. 26, 25. Juni 1984, Seite 256, Nr. 214150f, Columbus, Ohio, US; E.M. SAVITSKII et al.: "Oxidation-resistant materials for sulfuric acid-cycle reactors for hydrogen production", & ISSLED. PRIMEN. SPLAVOV TUGOPLAVKIKH MET.,1983, Seiten 144-146 *
CHEMICAL ABSTRACTS, Band 79, Nr. 8, 27. August 1973, Seiten 142-143, Nr. 44791u, Columbus, Ohio, US; L.A. POLUBOYARTSEVA et al.: "Corrosion resistance of 1Kh18N10T chromium-nickel-titanium steel in fuming sulfuric acid", & KHIM. PROM. (MOSCOW) 1973, 49(5), Seiten 372-373 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0317864B1 (fr) *	1987-11-25	1992-03-04	Bayer Ag	Mise en oeuvre d'un aliage contenant du chrome
DE4342188A1 (de) *	1993-12-10	1995-06-14	Bayer Ag	Austenitische Legierungen und deren Verwendung
US5695716A (en) *	1993-12-10	1997-12-09	Bayer Aktiengesellschaft	Austenitic alloys and use thereof
DE4342188C2 (de) *	1993-12-10	1998-06-04	Bayer Ag	Austenitische Legierungen und deren Verwendung

Also Published As

Publication number	Publication date
ATE34779T1 (de)	1988-06-15
AU5443486A (en)	1986-09-11
AU583898B2 (en)	1989-05-11
FI80481C (fi)	1990-06-11
JPS61207551A (ja)	1986-09-13
FI860944A0 (fi)	1986-03-06
DE3660261D1 (en)	1988-07-07
FI80481B (fi)	1990-02-28
FI860944L (fi)	1986-09-10
ES8802377A1 (es)	1988-05-16
CA1273230A (fr)	1990-08-28
ES552799A0 (es)	1988-05-16
DE3508532A1 (de)	1986-09-18
EP0200862B1 (fr)	1988-06-01

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