EP0292061B1 - Alliage résistant à la corrosion - Google Patents
Alliage résistant à la corrosion Download PDFInfo
- Publication number
- EP0292061B1 EP0292061B1 EP88200969A EP88200969A EP0292061B1 EP 0292061 B1 EP0292061 B1 EP 0292061B1 EP 88200969 A EP88200969 A EP 88200969A EP 88200969 A EP88200969 A EP 88200969A EP 0292061 B1 EP0292061 B1 EP 0292061B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- alloy according
- corrosion
- structural components
- alloy
- making structural
- 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
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 36
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 36
- 230000007797 corrosion Effects 0.000 title claims abstract description 28
- 238000005260 corrosion Methods 0.000 title claims abstract description 28
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 18
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 9
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 7
- 239000011733 molybdenum Substances 0.000 claims abstract description 7
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims abstract description 6
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 3
- 239000011651 chromium Substances 0.000 claims abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract 2
- 229910052782 aluminium Inorganic materials 0.000 claims abstract 2
- 229910052802 copper Inorganic materials 0.000 claims abstract 2
- 239000010949 copper Substances 0.000 claims abstract 2
- 229910052742 iron Inorganic materials 0.000 claims abstract 2
- 229910052759 nickel Inorganic materials 0.000 claims abstract 2
- 229910052710 silicon Inorganic materials 0.000 claims abstract 2
- 239000010703 silicon Substances 0.000 claims abstract 2
- 239000000463 material Substances 0.000 claims description 28
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 6
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 4
- 238000005336 cracking Methods 0.000 claims description 4
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 3
- 238000005299 abrasion Methods 0.000 claims 2
- 239000004411 aluminium Substances 0.000 claims 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 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 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 claims 1
- 229910019589 Cr—Fe Inorganic materials 0.000 abstract 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract 1
- 230000003247 decreasing effect Effects 0.000 abstract 1
- 239000012535 impurity Substances 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 239000011572 manganese Substances 0.000 abstract 1
- 235000011007 phosphoric acid Nutrition 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 206010070834 Sensitisation Diseases 0.000 description 4
- 230000008313 sensitization Effects 0.000 description 4
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 235000011149 sulphuric acid Nutrition 0.000 description 2
- 229910021592 Copper(II) chloride Inorganic materials 0.000 description 1
- 241001295925 Gegenes Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- FOCAUTSVDIKZOP-UHFFFAOYSA-N chloroacetic acid Chemical compound OC(=O)CCl FOCAUTSVDIKZOP-UHFFFAOYSA-N 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 150000003016 phosphoric acids Chemical class 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
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
- C22C38/001—Ferrous alloys, e.g. steel alloys containing N
-
- 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
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
-
- 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
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
Definitions
- the invention relates to a modified alloy according to material no. 1.4563 and its use.
- This known alloy has the following composition:
- This alloy was developed in order to be able to provide a material that is particularly corrosion-resistant to technical phosphoric acids.
- the invention has for its object to further improve this known alloy in its corrosion properties without other properties being adversely affected.
- this goal could be achieved by increasing the molybdenum content to 6 to 7% and also ensuring a nitrogen addition of 0.10 to 0.25%. Due to the increased molybdenum content, the resistance to pitting and crevice corrosion in chloride-containing media is significantly improved during the Nitrogen content stabilizes the austenitic structure and reduces its tendency to excrete TCP phases.
- the nitrogen content is in the range 0.14 to 0.22%, preferably 0.16 to 0.20% or 0.18%.
- Table 1 contains information on the chemical composition of 5 by 2 samples which have been subjected to the tests described below. Samples 11 and 12 are examples of the alloy according to the invention, while samples 21 and 22 relate to the starting alloy, which contains less molybdenum and no nitrogen. The table also shows 2 samples from 3 other test alloys. In the following, only the first digit of the sample number is used to identify the 5 different alloys.
- Table 2 contains information on various properties of the 5 alloys tested for comparison.
- the alloys are labeled 1 to 5.
- Column 2 refers to the critical crevice corrosion temperature
- column 3 to the critical pitting temperature, each in 6% FeCl3 solution.
- Column 4 contains values for the Corrosion rates in technical phosphoric acid (H3PO4, 72%).
- Column 5 shows the removal rates under conditions according to ASTM G 28, Practice B.
- column 6 contains information on the sensitization time with regard to the resistance to intergranular corrosion , ranges being given in each case, because strong fluctuations must be expected.
- the critical crevice corrosion and pitting temperatures are significantly higher in the alloy according to the invention than in the starting alloy. Temperatures are reached that have previously only been achieved with material 5, which is much higher alloyed.
- the corrosion rates in technical phosphoric acid are in the range of the comparative alloy No. 2 designed for this purpose. The goal set here, namely to create a material in which the improvement of some properties is not at the expense of other properties.
- the removal rate according to column 5 is smaller by more than a power of ten for the material according to the invention than for the comparison materials. This is particularly noteworthy because it has previously been assumed that molybdenum only improves the resistance of a material to corrosion in reducing acids. Apparently, the significant improvement now found in oxidizing acids is due to the combined effect of molybdenum and chromium.
- the removal rates in monochloroacetic acid for three different materials are compared in FIG. 2, namely once for the base material and once for welded material.
- the material 1 according to the invention performs better in all cases than the comparison materials 2 and 3.
- test according to ASTM G 28, Practice A is used to examine materials for their resistance to intergranular corrosion. It is carried out in a boiling solution with 50% H2SO4 and 3.7% Fe2 (SO4) 3. Such conditions occur in practice, for example, when handling contaminated sulfuric acids.
- the test according to ASTM G 28, Practice B, is used to determine the corrosion behavior of materials in strongly oxidizing acids containing metal ions.
- a boiling solution with 23% H2SO4, 1.2% HCl, 1% FeCl3 and 1% CuCl2 is used. This simulates conditions such as those that occur in pickling plants.
- Sour gas test tests have been developed to test the resistance to stress corrosion cracking under conditions such as can occur in deep boreholes when searching for natural gas and crude oil.
- the material according to the invention showed no damage from stress corrosion cracking and no pitting corrosion.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Chemically Coating (AREA)
- Powder Metallurgy (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Materials For Medical Uses (AREA)
- Secondary Cells (AREA)
- Prostheses (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Claims (11)
1. Alliage avec 30 à 32% de nickel, 26 à 28% de chrome, 0,5 à 1,5% de cuivre au maximum 2% de manganèse, 6 à 7% de molybdène et 0,10 à 0,25% d'azote au maximum 1,0% de silicium, au maximum 2,0% d'aluminium, au maximum 0,03% de carbone, le reste du fer y compris les impuretés inévitables.
2. Alliage selon la revendication 1, caractérisé en ce que la teneur en azote est égale à 0,14 à 0,22%
3. Alliage selon la revendication 1, caractérisé en ce que la teneur en azote est égale à 0,16 à 0,20%
4. Alliage selon la revendication 1, caractérisé en ce que la teneur en azote est égale à environ 0,18%.
5. Utilisation de l'alliage selon les revendications 1 à 4 comme matériau pour fabriquer des pièces détachées qui doivent présenter une bonne résistance à la corrosion, en particulier à la corrosion locale et/ou en fissures, dans des milieux aqueux, neutres ou acides, avec une concentration élevée en ions chlorure.
6. Utilisation de l'alliage selon les revendications 1 à 4 comme matériau pour fabriquer des pièces détachées qui doivent présenter un taux de dénudation de moins que 0,20 mm/a dans l'acide phosphorique technique avec une concentration en ions chlorure allant jusqu'à 1000 ppm à 100°C.
7. Utilisation de l'alliage selon les revendications 1 à 4 comme matériau pour fabriquer des pièces détachées qui doivent présenter un potentiel de corrosion locale d'au moins 1000 mVH à 75°C et d'au moins 800 mVH à 90°C dans des milieux aqueux neutres avec une concentration en ions chlorure d'un ordre de grandeur de 20.000 ppm.
8. Utilisation de l'alliage selon les revendications 1 à 4 comme matériau pour fabriquer des pièces détachées qui doivent présenter une température critique de corrosion locale d'au moins 80°C et une température critique de corrosion en fissures d'au moins 50°C, dans les milieux acides avec une concentration en ions chlorure de 50.000 ppm et plus, comme par exemple dans une solution de FeCl₃.
9. Utilisation de l'alliage selon les revendications 1 à 4 comme matériau pour fabriquer des pièces détachées qui doivent résister à la corrosion intercristalline dans les conditions selon ASTM G28, practice A.
10. Utilisation de l'alliage selon les revendications 1 à 4 comme matériau pour fabriquer des pièces détachées qui doivent présenter dans les conditions selon ASTM G28, practice B, à l'état recuit en solution, un taux de dénudation inférieur à 0,5 mm/a.
11. Utilisation de l'alliage selon les revendications 1 à 4 comme matériau pour fabriquer des pièces détachées gui doivent être exemptes de corrosion fissurante due à la contrainte et locale, dans les conditions d'essai agressif au gaz acide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT88200969T ATE61420T1 (de) | 1987-05-19 | 1988-05-14 | Korrosionsbestaendige legierung. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3716665 | 1987-05-19 | ||
| DE19873716665 DE3716665A1 (de) | 1987-05-19 | 1987-05-19 | Korrosionsbestaendige legierung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0292061A1 EP0292061A1 (fr) | 1988-11-23 |
| EP0292061B1 true EP0292061B1 (fr) | 1991-03-06 |
Family
ID=6327824
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP88200969A Expired - Lifetime EP0292061B1 (fr) | 1987-05-19 | 1988-05-14 | Alliage résistant à la corrosion |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4876065A (fr) |
| EP (1) | EP0292061B1 (fr) |
| JP (1) | JPS6425936A (fr) |
| KR (1) | KR960010598B1 (fr) |
| AT (1) | ATE61420T1 (fr) |
| AU (1) | AU596745B2 (fr) |
| BR (1) | BR8802449A (fr) |
| CA (1) | CA1334801C (fr) |
| DE (2) | DE3716665A1 (fr) |
| ES (1) | ES2021822B3 (fr) |
| NO (1) | NO168313C (fr) |
| ZA (1) | ZA883561B (fr) |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4784830A (en) * | 1986-07-03 | 1988-11-15 | Inco Alloys International, Inc. | High nickel chromium alloy |
| FR2705689B1 (fr) * | 1993-05-28 | 1995-08-25 | Creusot Loire | Acier inoxydable austénitique à haute résistance à la corrosion par les milieux chlorurés et sulfuriques et utilisations. |
| DE4342188C2 (de) * | 1993-12-10 | 1998-06-04 | Bayer Ag | Austenitische Legierungen und deren Verwendung |
| WO1997048830A1 (fr) * | 1996-06-17 | 1997-12-24 | Sumitomo Metal Industries, Ltd. | Alliage possedant une forte teneur en chrome et en nickel et resistant a la corrosion par sulfure d'hydrogene |
| EP0851037B1 (fr) * | 1996-06-17 | 2002-09-04 | Sumitomo Metal Industries, Ltd. | Alliage possedant une forte teneur en chrome et en nickel et resistant a la corrosion par sulfure d'hydrogene |
| US6918967B2 (en) * | 2000-03-15 | 2005-07-19 | Huntington Alloys Corporation | Corrosion resistant austenitic alloy |
| SE520027C2 (sv) * | 2000-05-22 | 2003-05-13 | Sandvik Ab | Austenitisk legering |
| AT408889B (de) * | 2000-06-30 | 2002-03-25 | Schoeller Bleckmann Oilfield T | Korrosionsbeständiger werkstoff |
| US6709528B1 (en) * | 2000-08-07 | 2004-03-23 | Ati Properties, Inc. | Surface treatments to improve corrosion resistance of austenitic stainless steels |
| SE527177C2 (sv) * | 2001-09-25 | 2006-01-17 | Sandvik Intellectual Property | Användning av ett austenitiskt rostfritt stål |
| MY136087A (en) * | 2001-10-22 | 2008-08-29 | Shell Int Research | Process to reduce the temperature of a hydrogen and carbon monoxide containing gas and heat exchanger for use in said process |
| US6740291B2 (en) | 2002-05-15 | 2004-05-25 | Haynes International, Inc. | Ni-Cr-Mo alloys resistant to wet process phosphoric acid and chloride-induced localized attack |
| US6764646B2 (en) | 2002-06-13 | 2004-07-20 | Haynes International, Inc. | Ni-Cr-Mo-Cu alloys resistant to sulfuric acid and wet process phosphoric acid |
| DE10233961A1 (de) * | 2002-07-25 | 2004-02-12 | Schmidt + Clemens Gmbh + Co. Edelstahlwerk Kaiserau | Verfahren zum thermischen Spalten von Kohlenwasserstoffen |
| US20050131263A1 (en) * | 2002-07-25 | 2005-06-16 | Schmidt + Clemens Gmbh + Co. Kg, | Process and finned tube for the thermal cracking of hydrocarbons |
| JP5053321B2 (ja) * | 2009-04-07 | 2012-10-17 | 本田技研工業株式会社 | 車両用内装部材 |
| DE102009061021B4 (de) * | 2009-05-20 | 2015-05-07 | VDM Metals GmbH | Verfahren zur Herstellung einer Metallfolie |
| DE102010049781A1 (de) | 2010-10-29 | 2012-05-03 | Thyssenkrupp Vdm Gmbh | Ni-Fe-Cr-Mo-Legierung |
| ES2543046T3 (es) * | 2012-01-18 | 2015-08-14 | Sandvik Intellectual Property Ab | Aleación austenítica |
| US10174397B2 (en) * | 2014-02-13 | 2019-01-08 | Vdm Metals International Gmbh | Titanium-free alloy |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3044871A (en) * | 1960-04-13 | 1962-07-17 | Cooper Alloy Corp | Hardenable corrosion resistant stainless steel |
| BE757048A (fr) * | 1969-10-09 | 1971-03-16 | Boehler & Co Ag Geb | Applications d'un acier entierement austenique dans des conditions corrodantes |
| SE411130C (sv) * | 1976-02-02 | 1985-09-09 | Avesta Jernverks Ab | Austenitiskt rostfritt stal med hog mo-halt |
| US4201575A (en) * | 1979-05-18 | 1980-05-06 | Carpenter Technology Corporation | Austenitic stainless corrosion-resistant alloy |
| JPS5811736A (ja) * | 1981-07-13 | 1983-01-22 | Sumitomo Metal Ind Ltd | 耐応力腐食割れ性に優れた高強度油井管の製造法 |
| US4487744A (en) * | 1982-07-28 | 1984-12-11 | Carpenter Technology Corporation | Corrosion resistant austenitic alloy |
| AU580758B2 (en) * | 1984-03-16 | 1989-02-02 | Inco Alloys International Inc. | High-strength alloy for industrial vessels |
-
1987
- 1987-05-19 DE DE19873716665 patent/DE3716665A1/de not_active Withdrawn
-
1988
- 1988-05-14 DE DE8888200969T patent/DE3861905D1/de not_active Expired - Lifetime
- 1988-05-14 AT AT88200969T patent/ATE61420T1/de not_active IP Right Cessation
- 1988-05-14 ES ES88200969T patent/ES2021822B3/es not_active Expired - Lifetime
- 1988-05-14 EP EP88200969A patent/EP0292061B1/fr not_active Expired - Lifetime
- 1988-05-18 KR KR1019880005882A patent/KR960010598B1/ko not_active Expired - Lifetime
- 1988-05-18 NO NO882157A patent/NO168313C/no not_active IP Right Cessation
- 1988-05-18 AU AU16376/88A patent/AU596745B2/en not_active Expired
- 1988-05-18 CA CA000567089A patent/CA1334801C/fr not_active Expired - Lifetime
- 1988-05-19 JP JP63122965A patent/JPS6425936A/ja active Pending
- 1988-05-19 US US07/196,034 patent/US4876065A/en not_active Expired - Lifetime
- 1988-05-19 ZA ZA883561A patent/ZA883561B/xx unknown
- 1988-05-19 BR BR8802449A patent/BR8802449A/pt not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| KR880014124A (ko) | 1988-12-22 |
| JPS6425936A (en) | 1989-01-27 |
| NO168313B (no) | 1991-10-28 |
| NO168313C (no) | 1992-02-05 |
| NO882157L (no) | 1988-11-21 |
| US4876065A (en) | 1989-10-24 |
| CA1334801C (fr) | 1995-03-21 |
| EP0292061A1 (fr) | 1988-11-23 |
| AU596745B2 (en) | 1990-05-10 |
| AU1637688A (en) | 1988-11-24 |
| NO882157D0 (no) | 1988-05-18 |
| KR960010598B1 (ko) | 1996-08-06 |
| DE3716665A1 (de) | 1988-12-08 |
| BR8802449A (pt) | 1988-12-20 |
| DE3861905D1 (de) | 1991-04-11 |
| ZA883561B (en) | 1990-01-31 |
| ES2021822B3 (es) | 1991-11-16 |
| ATE61420T1 (de) | 1991-03-15 |
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