EP1624082A1 - Acier austénitique non-magnétisable et utilisations de cet acier. - Google Patents
Acier austénitique non-magnétisable et utilisations de cet acier. Download PDFInfo
- Publication number
- EP1624082A1 EP1624082A1 EP04012322A EP04012322A EP1624082A1 EP 1624082 A1 EP1624082 A1 EP 1624082A1 EP 04012322 A EP04012322 A EP 04012322A EP 04012322 A EP04012322 A EP 04012322A EP 1624082 A1 EP1624082 A1 EP 1624082A1
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- EP
- European Patent Office
- Prior art keywords
- steel
- content
- weight
- steels
- corrosion resistance
- 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.)
- Withdrawn
Links
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 63
- 239000010959 steel Substances 0.000 title claims abstract description 63
- 230000007797 corrosion Effects 0.000 claims abstract description 31
- 238000005260 corrosion Methods 0.000 claims abstract description 31
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 14
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 9
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 6
- 229910052796 boron Inorganic materials 0.000 claims abstract description 6
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 6
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 5
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 3
- 238000005516 engineering process Methods 0.000 claims description 10
- 229910052717 sulfur Inorganic materials 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 3
- 238000005553 drilling Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 238000011982 device technology Methods 0.000 claims 1
- 238000005259 measurement Methods 0.000 claims 1
- 239000010949 copper Substances 0.000 abstract description 20
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 14
- 239000011651 chromium Substances 0.000 abstract description 14
- 229910052802 copper Inorganic materials 0.000 abstract description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 9
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 abstract description 7
- 229910017052 cobalt Inorganic materials 0.000 abstract description 7
- 239000010941 cobalt Substances 0.000 abstract description 7
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 abstract description 7
- 239000011733 molybdenum Substances 0.000 abstract description 7
- 229910052799 carbon Inorganic materials 0.000 abstract description 4
- 229910052758 niobium Inorganic materials 0.000 abstract description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 abstract description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 abstract description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 2
- 239000011572 manganese Substances 0.000 abstract 2
- 239000010955 niobium Substances 0.000 abstract 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000005864 Sulphur Substances 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 abstract 1
- 239000011574 phosphorus Substances 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 10
- 238000007792 addition Methods 0.000 description 5
- 238000001816 cooling Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000005275 alloying Methods 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 229910001566 austenite Inorganic materials 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 229910052715 tantalum Inorganic materials 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 229910052720 vanadium Inorganic materials 0.000 description 3
- 229910000859 α-Fe Inorganic materials 0.000 description 3
- 238000009826 distribution Methods 0.000 description 2
- 238000005242 forging Methods 0.000 description 2
- 229910052735 hafnium Inorganic materials 0.000 description 2
- 230000002401 inhibitory effect Effects 0.000 description 2
- 239000000543 intermediate Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000001953 recrystallisation Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910052726 zirconium Inorganic materials 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910017709 Ni Co Inorganic materials 0.000 description 1
- QDLZHJXUBZCCAD-UHFFFAOYSA-N [Cr].[Mn] Chemical compound [Cr].[Mn] QDLZHJXUBZCCAD-UHFFFAOYSA-N 0.000 description 1
- PYPDMIQMPWEFHX-UHFFFAOYSA-N [Pb].[Co] Chemical compound [Pb].[Co] PYPDMIQMPWEFHX-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000011593 sulfur 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
- 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
- C22C38/001—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
- C22C38/06—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
- C22C38/18—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
-
- 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
- C22C38/48—Ferrous alloys, e.g. steel alloys containing chromium with nickel with niobium or tantalum
-
- 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
- C22C38/52—Ferrous alloys, e.g. steel alloys containing chromium with nickel with cobalt
-
- 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
- C22C38/54—Ferrous alloys, e.g. steel alloys containing chromium with nickel with boron
-
- 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 invention relates to a non-magnetizable, austenitic steel of high corrosion resistance and strength.
- the property of being non-magnetic is obtained by the steel having a stable austenitic lattice structure in which no martensitic transformation occurs and which is free of ferrite portions.
- steels of this type are suitable for applications in which the interaction between the components made of the respective steel and ambient magnetic fields or hysteresis-related losses must be avoided. Examples of such areas of application can be found in refrigeration technology, in shipbuilding or special shipbuilding, in generator construction, in the offshore sector, in deep drilling technology, medical technology or the electrical industry.
- the steels must be particularly resistant to corrosion as they are widely used in environments critical to corrosion attack.
- the steels are highly resistant to pitting, contact and stress corrosion cracking.
- the high N contents also contribute to an increase in corrosion resistance.
- This is additionally supported by chromium contents, which are usually 14-20% by weight in the known steels. Further improvements in corrosion resistance can be achieved by adding Mo.
- EP 0 640 695 A1 An example of such a steel intended specifically for applications on the human body is described in EP 0 640 695 A1.
- the steel known from this publication has (in% by weight) max. 0.1% C, max. 1.0% Si, 11.0-25.0% Mn, 10.0-20.0% Cr, max. 1.0% Mo and 0.05 - 0.55% N, balance iron and unavoidable impurities.
- the known steel may have contents of V, Nb, Ta, W, Al, Ti, Cu or boron if the content of these elements does not exceed 2.0% by weight. The influences that these elements on the however, are not explained in EP 0 640 695 A1.
- the steel known from this document can also contain additional contents of Ni, Si, S, Bi, Cu, Co, V, Nb, Ta, Ti, Zr, Hf, W, Al, B, Ce or Ca having a content of up to 2 wt .-%.
- the strength of these steels produced and assembled in a known manner is at a level that is not sufficient for use in the fields of interest mentioned herein.
- a nonmagnetizable, austenitic steel of high corrosion resistance and strength which (in% by weight) C: 0.010-0.050%, Si: 0.01-0.35%, Mn: 12.0-22 , 0%, P: ⁇ 0.030%, S: ⁇ 0.010%, Cr: 15.0 - 23.5%, Mo: 1.0 - 4.0%, Ni: 0, 3 - 5.5%, Al : ⁇ 0.050%, N: 0, 40 - 0.68%, B: 0.0008 - 0.0040%, at least one of the elements Cu and / or Co, the following being applicable to the content of these elements: Cu: 1.0 - 5.0%, Co: 1.0-6.5%, and optionally Nb with a content of 0.001-0.1%, balance iron and unavoidable impurities.
- a steel is available, which is characterized by a particularly high stability of its austenitic structure and a correspondingly minimized magnetizability. Due to these properties, relative permeability values ⁇ r of ⁇ 1.005 are reliably achieved. At the same time, steel according to the invention has a significantly improved corrosion resistance compared with the known non-magnetic steels while the strength is still good. This makes steel according to the invention particularly suitable for use in an aggressive environment, as is the case, for example, in the field of offshore technology, or in deep drilling technology, in particular in the field of oil and natural gas exploration. Also, steel according to the invention can be used particularly well in generator construction, in refrigeration technology or in medical technology because of this property combination.
- Characteristic features of the composition of the invention are the special alloy tuning, in which the effect of certain alloying elements has been used in particular for increasing the corrosion resistance.
- the alloying measures compared to the known steels relate in particular to the modification of the contents of molybdenum and nickel and the individual or combined addition of copper and cobalt depending on the particular case of use.
- the passivity range is thereby widened compared to copper-free steels.
- a reduction of the material removal rates is achieved.
- the anticorrosive effect is shown to a particularly high degree against attack by non-oxidizing media, such as sulfur-containing substances, and HCL attack.
- the strongest effect in terms of corrosion inhibition is achieved by the dissolved amounts of copper. If the distribution is sufficiently homogeneous and fine, precipitated copper also contributes to the reduction of mass removal.
- copper helps to stabilize the austenitic structure, allowing the use of the corrosion-inhibiting influence of other elements, eg higher levels of molybdenum.
- the upper limit of the Cu content is 5% by weight, preferably 4 wt .-%, in order to avoid the formation of copper phases, which lose their corrosion-inhibiting effect on coarse, inhomogeneous distribution on the one hand, and on the other greatly affect the forming behavior of the steels.
- Additions of cobalt in contents of at least 1% by weight, on the other hand, can purposefully improve the resistance of the steel according to the invention to oxidizing media.
- cobalt leads in a similar way as copper to a widening of the passivity range in the temperature concentration field of the contact media.
- the presence of cobalt in steel according to the invention further supports austenite stabilization. Accordingly, by adding cobalt, the contents of such alloying elements can be increased, which are undesirable per se because of their ferrite-forming property, but contribute to the optimized corrosion resistance of the steel according to the invention.
- a reduction of the Ni content in favor of the presence of cobalt achieved strong effects, so that the combined presence of Ni and Co showed better activity than the single presence of Ni without Co.
- Co contents which are well above 6.5 wt .-%, no further increase in the effect could be found.
- An optimal ratio of achieved property improvement and alloying expense resulted when the Co contents were varied to a maximum of 4 wt .-%.
- the invention thus provides a possibility of producing a high-strength and non-magnetic steel with regard to its properties
- the presence of molybdenum at levels of 1.0-4.0% by weight also contributes to the high corrosion resistance of a steel according to the invention.
- the use of molybdenum was in the genus of the steel belonging to the known steels only very limited because of the strong ferrite-forming property of Mo.
- the steel composition of the present invention allows increased addition of Mo due to the enhanced austenite stability due to the presence of Cu and / or Co, with the result that overall improved corrosion resistance is achieved. At levels less than 1.0% by weight, the beneficial effects of Mo do not occur. By contrast, contents of more than 4.0% by weight would again entail the risk of ferrite formation and would also impair the formability of the steel.
- Nickel is added to austenite stabilizing steel of the invention at levels of 0.3-5.5 wt%.
- the maximum Ni content is limited to 5.0 wt% in order to take advantage of the surprisingly found improvement in the corrosion resistance of the reduced Ni content in the co-presence of Cu and / or Co.
- nitrogen contents of 0.40 - 0.68 wt .-% By nitrogen contents of 0.40 - 0.68 wt .-%, the formation of a stable austenitic structure is supported. In addition, nitrogen contributes in a conventional manner to improve the corrosion properties. These effects are particularly certain when the N content is 0.45-0.68% by weight, in particular 0.45-0.60% by weight.
- the blocks were subjected to hot deformation by forging in the temperature range between 1230 ° C and 970 ° C.
- the hot deformation can also be carried out as rolling if the end product is to be delivered as a rolled product.
- thermoformed intermediates were cooled to below the recrystallization temperature.
- a cooling rate was achieved which was at least that obtained by cooling in air Cooling rate corresponds. It proved particularly advantageous to carry out the cooling to a temperature which is between 250 ° C and the recrystallization temperature.
- the intermediates cooled to this temperature were then subjected to a final transformation.
- the resulting degree of deformation was in the range of 10 - 35%, in which case it was found that particularly good results were achieved when the degree of deformation in the range of 15 - 20%.
- the forged and cooled blocks were reduced from the steels in the final deformation with a degree of deformation of 18% each to a final diameter of 136 mm.
- the current density potential curves (current density j above the potential ⁇ ) for the samples tested in 1000 ppm Cl - containing medium are v 1000 , E 1000 and applied the samples V 80000 and E 80000 investigated in 80,000 ppm Cl - containing medium.
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)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04012322A EP1624082A1 (fr) | 2004-05-25 | 2004-05-25 | Acier austénitique non-magnétisable et utilisations de cet acier. |
| PCT/EP2005/005423 WO2005116285A1 (fr) | 2004-05-25 | 2005-05-19 | Acier austenitique non magnetisable et utilisations de cet acier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP04012322A EP1624082A1 (fr) | 2004-05-25 | 2004-05-25 | Acier austénitique non-magnétisable et utilisations de cet acier. |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP1624082A1 true EP1624082A1 (fr) | 2006-02-08 |
Family
ID=34967688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04012322A Withdrawn EP1624082A1 (fr) | 2004-05-25 | 2004-05-25 | Acier austénitique non-magnétisable et utilisations de cet acier. |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1624082A1 (fr) |
| WO (1) | WO2005116285A1 (fr) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2248919B1 (fr) | 2009-04-27 | 2015-10-21 | Daido Tokushuko Kabushiki Kaisha | Acier inoxydable non magnétique à haute résistance à la corrosion |
| RU2813453C1 (ru) * | 2023-12-08 | 2024-02-12 | Общество с ограниченной ответственностью "ЗЛАТОУСТОВСКИЙ МЕТАЛЛУРГИЧЕСКИЙ ЗАВОД" | Аустенитная высокопрочная коррозионно-стойкая немагнитная азотсодержащая сталь ЗИ135 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8535606B2 (en) * | 2008-07-11 | 2013-09-17 | Baker Hughes Incorporated | Pitting corrosion resistant non-magnetic stainless steel |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3904401A (en) * | 1974-03-21 | 1975-09-09 | Carpenter Technology Corp | Corrosion resistant austenitic stainless steel |
| US5094812A (en) * | 1990-04-12 | 1992-03-10 | Carpenter Technology Corporation | Austenitic, non-magnetic, stainless steel alloy |
| CH688862A5 (de) * | 1995-01-03 | 1998-04-30 | Basf Ag | Korrosionsbestaendige Legierung zur Verwendung als Werkstoff fuer am oder im menschlichen Koerper verwendete Gegenstaende, insbesondere zur Vermeidung von Nickel-Allergie. |
| EP0987342A1 (fr) * | 1998-09-16 | 2000-03-22 | Daido Tokushuko Kabushiki Kaisha | Acier inoxydable non magnétique à haute résistance, et procédé pour sa production |
| WO2000026428A1 (fr) * | 1998-11-02 | 2000-05-11 | Crs Holdings, Inc. | Acier inoxydable austenitique cr-mn-ni-cu |
-
2004
- 2004-05-25 EP EP04012322A patent/EP1624082A1/fr not_active Withdrawn
-
2005
- 2005-05-19 WO PCT/EP2005/005423 patent/WO2005116285A1/fr not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3904401A (en) * | 1974-03-21 | 1975-09-09 | Carpenter Technology Corp | Corrosion resistant austenitic stainless steel |
| US5094812A (en) * | 1990-04-12 | 1992-03-10 | Carpenter Technology Corporation | Austenitic, non-magnetic, stainless steel alloy |
| CH688862A5 (de) * | 1995-01-03 | 1998-04-30 | Basf Ag | Korrosionsbestaendige Legierung zur Verwendung als Werkstoff fuer am oder im menschlichen Koerper verwendete Gegenstaende, insbesondere zur Vermeidung von Nickel-Allergie. |
| EP0987342A1 (fr) * | 1998-09-16 | 2000-03-22 | Daido Tokushuko Kabushiki Kaisha | Acier inoxydable non magnétique à haute résistance, et procédé pour sa production |
| WO2000026428A1 (fr) * | 1998-11-02 | 2000-05-11 | Crs Holdings, Inc. | Acier inoxydable austenitique cr-mn-ni-cu |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2248919B1 (fr) | 2009-04-27 | 2015-10-21 | Daido Tokushuko Kabushiki Kaisha | Acier inoxydable non magnétique à haute résistance à la corrosion |
| RU2813453C1 (ru) * | 2023-12-08 | 2024-02-12 | Общество с ограниченной ответственностью "ЗЛАТОУСТОВСКИЙ МЕТАЛЛУРГИЧЕСКИЙ ЗАВОД" | Аустенитная высокопрочная коррозионно-стойкая немагнитная азотсодержащая сталь ЗИ135 |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2005116285A1 (fr) | 2005-12-08 |
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