EP0334410B1 - Nickel chromium-molybdenum alloyd - Google Patents
Nickel chromium-molybdenum alloyd Download PDFInfo
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- EP0334410B1 EP0334410B1 EP89200444A EP89200444A EP0334410B1 EP 0334410 B1 EP0334410 B1 EP 0334410B1 EP 89200444 A EP89200444 A EP 89200444A EP 89200444 A EP89200444 A EP 89200444A EP 0334410 B1 EP0334410 B1 EP 0334410B1
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C19/00—Alloys based on nickel or cobalt
- C22C19/03—Alloys based on nickel or cobalt based on nickel
- C22C19/05—Alloys based on nickel or cobalt based on nickel with chromium
- C22C19/051—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W
- C22C19/055—Alloys based on nickel or cobalt based on nickel with chromium and Mo or W with the maximum Cr content being at least 20% but less than 30%
Definitions
- the invention relates to an alloy according to claim 1 and the uses according to claims 2 to 11.
- Hydrochloric acid is the only mineral acid that is compatible with the human and animal body.
- the new material requirement is that of particularly high resistance to dilute hydrochloric acid.
- this alloy has a significantly better corrosion resistance under all test conditions than corresponds to the state of the art (stdT) according to DE-OS 31 25 301.
- the test results were obtained on four working examples Nos. 1 to 4 of the alloy according to the invention, the chemical analyzes of which are listed in Table 1.
- Table 1 also contains the analyzes of comparative samples Nos. 5 and 6 corresponding to the state of the art according to DE-OS 31 25 301, which have already been produced in accordance with this invention with regard to the levels of deoxidation elements aluminum, magnesium and calcium which determine their processability were.
- a boiling aqueous solution with 23% H2SO4, 1.2% HCl, 1% FeCl3 and 1% CuCl2 according to ASTM G-28, Method B can be used as a test solution for the tasks of thin acid concentration.
- Table 2 makes clear, the alloy according to the invention has a 30% lower removal rate there than corresponds to the older prior art. Are not the own measurements for the prior art (comparative sample 6 in Table 2), but the specification of 0.17 mm / year in "Materials and Corrosion", Volume 37 (1986), pp. 137-145, the alloy according to the invention is even 59% above the prior art.
- the alloy according to the invention shown in Table 3 is essentially the same as the prior art.
- the critical pitting corrosion temperature determined for the prior art corresponds to the information in "Materials and Corrosion", Volume 37 (1986), pp. 137-145.
- the alloy according to the invention here has only a slight tendency to be superior, as the measurement results in working examples 3 and 4 show.
- the identical values for the local corrosion resistance in the known 10% FeCl3 ⁇ 6H2O solution given in the same table for the prior art and the invention are only identical because the test conditions do not allow measurements at a higher temperature.
- Table 4 shows the clear superiority of the alloy according to the invention over the prior art with regard to the susceptibility to crevice corrosion in the same solution at 85 ° C., measured with a conventional crevice block arrangement made of PTFE (cf. "Materials and Corrosion", volume 37 ( 1986), p. 185).
- the increased resistance of the alloy according to the invention to local corrosion comes, of great importance.
- the alloy according to the invention can thus be used where the alloy corresponding to the prior art can no longer be used due to local corrosion, for example in prewashers with particularly aggressive working conditions.
- Table 5 also gives the linear removal rates in typical flue gas desulfurization media.
- the far better suitability of the alloy according to the invention is evident, especially in the case of the dilute 2% sulfuric acid solution at high temperature (105 ° C.) and with a high chloride content, where the average removal rate is around 93% lower than that of the Alloy corresponding to the state of the art.
- the higher resistance of the alloy according to the invention in dilute hydrochloric acid compared to the prior art is shown in Table 6. Accordingly, the alloy according to the invention behaves about 60% better in this reducing acid than the comparative samples corresponding to the prior art. Significant progress of around 25% is still given if the comparison shows the removal rate of 0 published elsewhere ("Materials and Corrosion", Volume 37 (1986), pp. 137-144) for the state of the art , 28 mm / year. Table 6 also gives information on the resistance in chloride-free 10% H2SO4 as another important reducing acid. The removal rate there is reduced by around 64% compared to the prior art and still by 50% if the comparison for the prior art is based on the information in DE-OS 31 25 301 of 0.36 mm / year.
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- Preventing Corrosion Or Incrustation Of Metals (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
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Abstract
Description
Die Erfindung bezieht sich auf eine Legierung gemäß Anspruch 1 und die Verwendungen gemäß Ansprüchen 2 bis 11.The invention relates to an alloy according to claim 1 and the uses according to claims 2 to 11.
Gemäß DE-AS 1 210 566 bzw. der korrespondierenden US-P 3 203 792 und FR-P 1 536 741 sind folgende korrosionsbeständige Legierungen mit Nickel, Chrom und Molybdän als Hauptlegierungskomponenten bekannt geworden:
Es ist gleichfalls bekannt, daß sich derartige Legierungen nur dann einwandfrei verarbeiten lassen, wenn sie weitere, reaktive Elemente als Desoxidationsmittel enthalten. So ließen sich solche Legierungen gemäß Angabe in Z. Metallkunde, Band 53 (1962), 5. 289, einwandfrei verschmieden, wenn sie 0,16 bis 0,71 % Aluminium oder 0,09 bis 0,11 % Magnesium enthielten. Nach der aus dem gleichen Ursprung kommenden Lehre von DE-AS 1 210 566 bzw. der korrespondierenden US-P 3 203 792 erwies sich aber Aluminium als Desoxidationselement als sehr ungünstig, wohingegen Zusätze von Erdalkalimetall, d.h. Magnesium oder Calcium geeignet sein sollen.It is also known that such alloys can only be processed properly if they contain other reactive elements as deoxidizing agents. Such alloys could, according to information in Z. Metallkunde, Volume 53 (1962), 5.289, be flawlessly forged if they contained 0.16 to 0.71% aluminum or 0.09 to 0.11% magnesium. According to the teaching of DE-AS 1 210 566 or the corresponding US Pat. No. 3,203,792, which comes from the same source, aluminum has proven to be very unfavorable as a deoxidation element, whereas additions of alkaline earth metal, i.e. Magnesium or calcium should be suitable.
Überraschenderweise hat sich nun herausgestellt, daß die Warmverarbeitbarkeit dann am besten, d.h. vollkommen rißfrei möglich ist, wenn die Desoxidationselemente Aluminium, Magnesium und Calcium in folgender Kombination Verwendung finden
- 0,1
- bis 0,4 % Aluminium
- 0,001
- bis 0,04 % Magnesium
- 0,001
- bis 0,01 % Calcium
- 0.1
- up to 0.4% aluminum
- 0.001
- up to 0.04% magnesium
- 0.001
- up to 0.01% calcium
Für Anwendungen unter den verschiedensten stark korrodierenden Medien ist aus der DE-OS 31 25 301 weiterhin eine Legierung folgender Zusammensetzung bekannt geworden:
Diese bekannte Legierung wies zum Zeitpunkt ihres Bekanntwerdens und ihrer Einführung in den Markt von den damals verfügbaren Legierungen die optimale Kombination korrosions-resistenter Eigenschaften auf. Bei der Erprobung für Aufgaben der heutigen chemischen Verfahrenstechnik und der aktuellen Umweltschutztechnik stellt sich nun aber heraus, daß diese Legierung nicht allen Anforderungen genügen kann. Beispielsweise wird aufgrund der ständig wachsenden Ansprüche an den Umweltschutz eine Verklappung von Abfall-Schwefelsäure, sogenannter Dünnsäure, in das offene Meer künftig nicht mehr möglich sein. Diese Abfall-Schwefelsäure muß deshalb aufgearbeitet werden, was Werkstoffe besonders hoher Resistenz gegenüber heißer verunreinigter Schwefelsäure mittlerer Konzentration erfordert. Auf der anderen Seite hat sich bei der zunehmenden Einführung der Rauchgasentschwefelung in jüngster Zeit herausgestellt, daß auch hier so aggressive Bedingungen auftreten können, welchen die nach dem Stand der Technik bekannten Legierungen nicht mehr mit Sicherheit genügen. Dieses ist u.a. eine Folge der Kreislaufführung des Waschwassers mit geringen Ausschleusungsmengen, so daß es zu hohen Anreicherungen insbesondere von Chloridionen kommt. Da die Priorität des Umweltschutzes aber die Funktionsfähigkeit der Rauchgasentschwefelungsanlagen für den Betrieb von fossil befeuerten Kraftwerken voraussetzt, müssen hier Werkstoffe höherer Korrosionsbeständigkeit als nach dem Stand der Technik bekannt Verwendung finden.At the time it became known and when it was introduced to the market, this well-known alloy had the optimum combination of corrosion-resistant properties from the alloys available at the time. However, when testing for tasks in today's chemical process engineering and current environmental protection technology, it turns out that this alloy cannot meet all requirements. For example, due to the constantly increasing demands on environmental protection, it will no longer be possible to dump waste sulfuric acid, so-called thin acid, into the open sea. This waste sulfuric acid must therefore be worked up, which requires materials of particularly high resistance to hot contaminated sulfuric acid of medium concentration. On the other hand, with the increasing introduction of flue gas desulphurization in recent times, it has emerged that here too, aggressive conditions can occur which the alloys known from the prior art no longer meet with certainty. This is, among other things, a consequence of the circulation of the washing water with small amounts of discharge, so that it is too high Enrichments come especially from chloride ions. However, since the priority of environmental protection presupposes the functionality of the flue gas desulfurization systems for the operation of fossil-fired power plants, materials with a higher corrosion resistance than known from the prior art must be used here.
Als weiteres Beispiel seien die aktuellen Werkstoff-Anforderungen der Biotechnologie angeführt. Hier spielt die Salzsäure als einzige mit dem menschlichen und tierischen Körper verträgliche Mineralsäure eine besondere Rolle. Damit stellt sich als neue Werkstoff-Anforderung diejenige nach besonders hoher Beständigkeit gegenüber verdünnter Salzsäure.Another example is the current material requirements of biotechnology. Hydrochloric acid is the only mineral acid that is compatible with the human and animal body. The new material requirement is that of particularly high resistance to dilute hydrochloric acid.
Es besteht somit die Aufgabe, für die neuen Arbeitsbedingungen der heutigen chemischen Verfahrenstechnik und der aktuellen Umweltschutztechnik eine Legierung anzugeben, die in ihren Korrosionseigenschaften den neuen Anforderungen deutlich besser genügt als die nach dem Stand der Technik des Jahres 1980 (Unionspriorität zu DE-OS 31 25 301) bekannte Legierung und die sich wirtschaftlich herstellen und verarbeiten läßt.It is therefore the task of specifying an alloy for the new working conditions of today's chemical process engineering and the current environmental protection technology, whose corrosion properties meet the new requirements much better than that according to the state of the art in 1980 (Union priority to DE-OS 31 25 301) known alloy and which can be manufactured and processed economically.
Überraschenderweise hat sich herausgestellt, daß dieses Ziel erreicht werden kann, wenn eine Legierung folgender Zusammensetzung verwendet wird:
Wie aus den in den beigefügten Tabellen 1 bis 7 angegebenen Versuchsergebnissen abzulesen ist, weist diese Legierung unter allen Testbedingungen eine deutlich bessere Korrosionsbeständigkeit auf als dem Stand der Technik (stdT) gemäß DE-OS 31 25 301 entspricht. Die Versuchsergebnisse wurden an vier Ausführungsbeispielen Nr. 1 bis 4 der erfindungsgemäßen Legierung gewonnen, deren chemische Analysen in Tabelle 1 aufgeführt sind. Tabelle 1 enthält zugleich auch die Analysen der dem Stand der Technik gemäß DE-OS 31 25 301 entsprechenden Vergleichsproben Nr. 5 und 6, die im Hinblick auf die ihre Verarbeitbarkeit bestimmenden Gehalte an den Desoxidationselementen Aluminium, Magnesium und Calcium bereits gemäß dieser Erfindung hergestellt worden waren.As can be seen from the test results given in the attached Tables 1 to 7, this alloy has a significantly better corrosion resistance under all test conditions than corresponds to the state of the art (stdT) according to DE-OS 31 25 301. The test results were obtained on four working examples Nos. 1 to 4 of the alloy according to the invention, the chemical analyzes of which are listed in Table 1. Table 1 also contains the analyzes of comparative samples Nos. 5 and 6 corresponding to the state of the art according to DE-OS 31 25 301, which have already been produced in accordance with this invention with regard to the levels of deoxidation elements aluminum, magnesium and calcium which determine their processability were.
Als Testlösung für die Aufgaben der Dünnsäure-Aufkonzentrierung kann eine siedende wässrige Lösung mit 23 % H₂SO₄, 1,2 % HCl, 1 % FeCl₃ und 1 % CuCl₂ gemäß ASTM G-28, Methode B, herangezogen werden. Wie Tabelle 2 deutlich macht, weist die erfindungsgemäße Legierung dort eine um 30 % geringere Abtragungsrate auf als dem älteren Stand der Technik entspricht. Werden für den Stand der Technik nicht die eigenen Messungen (Vergleichsprobe 6 in Tabelle 2), sondern die Angabe von 0,17 mm/Jahr in "Werkstoffe und Korrosion", Band 37 (1986), S. 137-145, herangezogen, so liegt die erfindungsgemäße Legierung sogar um 59 % über dem Stand der Technik.A boiling aqueous solution with 23% H₂SO₄, 1.2% HCl, 1% FeCl₃ and 1% CuCl₂ according to ASTM G-28, Method B can be used as a test solution for the tasks of thin acid concentration. As Table 2 makes clear, the alloy according to the invention has a 30% lower removal rate there than corresponds to the older prior art. Are not the own measurements for the prior art (comparative sample 6 in Table 2), but the specification of 0.17 mm / year in "Materials and Corrosion", Volume 37 (1986), pp. 137-145, the alloy according to the invention is even 59% above the prior art.
In einer stärker verdünnten chloridionenhaltigen schwefelsauren Lösung, welche häufig zur Bestimmung der Lokalkorrosionsbeständigkeit in Form der kritischen Lochkorrosionstemperatur unter derartigen Bedingungen herangezogen wird, erweist sich die erfindungsgemäße Legierung gemäß Tabelle 3 als dem Stand der Technik im wesentlichen gleich. Die für den Stand der Technik ermittelte kritische Lochkorrosionstemperatur entspricht der Angabe in "Werkstoffe und Korrosion", Band 37 (1986), S. 137-145. Die erfindungsgemäße Legierung weist hier nur eine leichte Tendenz zur Überlegenheit auf, wie die Meßergebnisse an den Ausführungsbeispielen 3 und 4 zeigen. Die in derselben Tabelle für den Stand der Technik und die Erfindung angegebenen identischen Werte für die Lokalkorrosionsbeständigkeit in der bekannten 10 %igen FeCl₃ · 6H₂O-Lösung sind nur deshalb identisch, weil die Testbedingungen keine Messungen bei höherer Temperatur erlauben. Deshalb muß in beiden Fällen das "größer als" Zeichen stehen. Dagegen zeigt Tabelle 4 die deutliche Überlegenheit der erfindungsgemäßen Legierung gegenüber dem Stand der Technik im Hinblick auf die Anfälligkeit gegenüber Spaltkorrosion in der gleichen Lösung bei 85°C, gemessen mit einer üblichen Spaltblockanordnung aus PTFE (vgl. "Werkstoffe und Korrosion", Band 37 (1986), S. 185).In a more dilute solution of sulfuric acid containing chloride ions, which is often used to determine the local corrosion resistance in the form of the critical pitting temperature under such conditions, the alloy according to the invention shown in Table 3 is essentially the same as the prior art. The critical pitting corrosion temperature determined for the prior art corresponds to the information in "Materials and Corrosion", Volume 37 (1986), pp. 137-145. The alloy according to the invention here has only a slight tendency to be superior, as the measurement results in working examples 3 and 4 show. The identical values for the local corrosion resistance in the known 10% FeCl₃ · 6H₂O solution given in the same table for the prior art and the invention are only identical because the test conditions do not allow measurements at a higher temperature. Therefore, the "greater than" sign must appear in both cases. In contrast, Table 4 shows the clear superiority of the alloy according to the invention over the prior art with regard to the susceptibility to crevice corrosion in the same solution at 85 ° C., measured with a conventional crevice block arrangement made of PTFE (cf. "Materials and Corrosion", volume 37 ( 1986), p. 185).
Im Hinblick auf die Anforderungen, welche sich bei der Rauchgasentschwefelung stellen, ist die erhöhte Beständigkeit der erfindungsgemäßen Legierung gegenüber Lokalkorrosion, wie sie in der Tabelle 4 zum Ausdruck kommt, von großer Bedeutung. Damit kann die erfindungsgemäße Legierung dort zur Anwendung kommen, wo die dem Stand der Technik entsprechende Legierung wegen auftretender Lokalkorrosion nicht mehr einsatzfähig ist, beispielsweise in Vorwäschern mit besonders aggressiven Arbeitsbedingungen. Tabelle 5 gibt darüber hinaus die linearen Abtragungsraten in typischen Medien der Rauchgasentschwefelung an. Auch hier ist die weitaus bessere Eignung der erfindungsgemäßen Legierung evident, vor allem im Fall der verdünnten 2 %igen schwefelsauren Lösung bei hoher Temperatur (105°C) und mit hohem Chloridanteil, wo die mittlere Abtragungsrate um rund 93 % geringer ist als bei der dem Stand der Technik entsprechenden Legierung.With regard to the requirements that arise in flue gas desulfurization, the increased resistance of the alloy according to the invention to local corrosion, as shown in Table 4 comes, of great importance. The alloy according to the invention can thus be used where the alloy corresponding to the prior art can no longer be used due to local corrosion, for example in prewashers with particularly aggressive working conditions. Table 5 also gives the linear removal rates in typical flue gas desulfurization media. Here too, the far better suitability of the alloy according to the invention is evident, especially in the case of the dilute 2% sulfuric acid solution at high temperature (105 ° C.) and with a high chloride content, where the average removal rate is around 93% lower than that of the Alloy corresponding to the state of the art.
Die höhere Beständigkeit der erfindungsgemäßen legierung in verdünnter Salzsäure im Vergleich zum Stand der Technik geht aus Tabelle 6 hervor. Demnach verhält sich die erfindungsgemäße Legierung in dieser reduzierenden Säure um rund 60 % besser als die dem Stand der Technik entsprechenden Vergleichsproben. Ein erheblicher Fortschritt von rund 25 % ist auch dann immer noch gegeben, wenn man dem Vergleich die an anderer Stelle ("Werkstoffe und Korrosion", Band 37 (1986), S. 137-144) für den Stand der Technik publizierte Abtragungsrate von 0,28 mm/Jahr zugrundelegt. Tabelle 6 macht zugleich Angaben für die Beständigkeit in chloridfreier 10 %iger H₂SO₄ als weiterer wichtiger reduzierender Säure. Die Abtragungsrate ist dort gegenüber dem Stand der Technik um rund 64 % vermindert und immer noch um 50 %, wenn man dem Vergleich für den Stand der Technik die Angabe in DE-OS 31 25 301 von 0,36 mm/Jahr zugrundelegt.The higher resistance of the alloy according to the invention in dilute hydrochloric acid compared to the prior art is shown in Table 6. Accordingly, the alloy according to the invention behaves about 60% better in this reducing acid than the comparative samples corresponding to the prior art. Significant progress of around 25% is still given if the comparison shows the removal rate of 0 published elsewhere ("Materials and Corrosion", Volume 37 (1986), pp. 137-144) for the state of the art , 28 mm / year. Table 6 also gives information on the resistance in chloride-free 10% H₂SO₄ as another important reducing acid. The removal rate there is reduced by around 64% compared to the prior art and still by 50% if the comparison for the prior art is based on the information in DE-OS 31 25 301 of 0.36 mm / year.
Erstaunlich ist dann, daß auch in oxidierenden Medien, wie den in der als Standard-Testlösung für stark oxidierende Verhältnisse geltenden Prüflösung nach ASTM G-28, Methode A, mit der erfindungsgemäßen Legierung gemäß Tabelle 7 eine den Stand der Technik deutlich, d.h. um 40 % übertreffende Korrosionsbeständigkeit beobachtet wird. Im letztgenannten Fall wurden allerdings für den Stand der Technik mit im Mittel 0,91 mm/Jahr höhere Abtragungsraten gemessen als die in DE-OS 31 25 301 angegebenen 0,74 mm/Jahr. Aber selbst dann, wenn man für den Stand der Technik diesen geringeren Wert zugrundelegt, ergibt sich für die erfindungsgemäße Legierung immer noch ein erheblicher Fortschritt von 26 % gegenüber dem Stand der Technik.It is then astonishing that even in oxidizing media, such as the test solution according to ASTM G-28, method A, which is valid in the standard test solution for strongly oxidizing conditions, the alloy according to Table 7 clearly shows the state of the art, i.e. Corrosion resistance superior to 40% is observed. In the latter case, however, removal rates were measured for the prior art with on average 0.91 mm / year higher removal rates than the 0.74 mm / year specified in DE-OS 31 25 301. But even if this lower value is taken as a basis for the prior art, there is still a considerable advance of 26% over the prior art for the alloy according to the invention.
Das überlegene Verhalten der erfindungsgemäßen Legierung gegenüber dem Stand der Technik ist insbesondere deswegen bemerkenswert, weil nach der Lehre der DE-OS 31 25 301 je mindestens 2 % Wolfram und Eisen zulegiert und bestimmte Verhältnisse Mo/W und Fe/W eingehalten werden müssen. Wolfram wird aber als Legierungselement nur dann zugesetzt, wenn bestimmte Ziele anders nicht erreicht werden können. Im Falle der bekannten Legierung wird auch ausdrücklich darauf hingewiesen, daß hier ein gegenseitiger Austausch von Molybdän und Wolfram nicht möglich ist, daß beide Elemente in den angegebenen Grenzen erforderlich sind und daß ein Verhältnis Mo/W von 3 bis 5 eingehalten werden muß. Vor diesem Hintergrund war es für den Fachmann nicht selbstverständlich, für den genannten Anwendungszweck eine Legierung auszuwählen, die Wolfram nur noch in solchen Mengen enthält, die bei einer wirtschaftlichen Herstellung unter Verwendung von Rücklaufschrott unvermeidbar sind, die Verarbeitbarkeit der Legierung aber nicht beeinträchtigen.The superior behavior of the alloy according to the invention over the prior art is particularly noteworthy because, according to the teaching of DE-OS 31 25 301, at least 2% of tungsten and iron are alloyed and certain Mo / W and Fe / W ratios have to be observed. However, tungsten is only added as an alloying element if certain goals cannot be achieved otherwise. In the case of the known alloy, it is expressly pointed out that a mutual exchange of molybdenum and tungsten is not possible, that both elements are required within the specified limits and that a Mo / W ratio of 3 to 5 must be observed. Against this background, it was not a matter of course for the person skilled in the art to select an alloy for the application mentioned which only contains tungsten in amounts which are unavoidable in the case of economical production using recycle scrap, but do not impair the processability of the alloy.
Weitere Anwendungsmöglichkeiten erschließen sich dem Fachmann aufgrund der in den Tabellen 2 bis 7 demonstrierten Korrosionsbeständigkeit.
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT89200444T ATE76109T1 (en) | 1988-03-03 | 1989-02-22 | NICKEL CHROME MOLYBDENUM ALLOY. |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE3806799 | 1988-03-03 | ||
| DE3806799A DE3806799A1 (en) | 1988-03-03 | 1988-03-03 | NICKEL CHROME MOLYBDENUM ALLOY |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0334410A1 EP0334410A1 (en) | 1989-09-27 |
| EP0334410B1 true EP0334410B1 (en) | 1992-05-13 |
Family
ID=6348657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP89200444A Expired - Lifetime EP0334410B1 (en) | 1988-03-03 | 1989-02-22 | Nickel chromium-molybdenum alloyd |
Country Status (12)
| Country | Link |
|---|---|
| US (1) | US4906437A (en) |
| EP (1) | EP0334410B1 (en) |
| JP (1) | JP3004654B2 (en) |
| KR (1) | KR0122078B1 (en) |
| AT (1) | ATE76109T1 (en) |
| AU (1) | AU616244B2 (en) |
| BR (1) | BR8900968A (en) |
| CA (1) | CA1327716C (en) |
| DE (2) | DE3806799A1 (en) |
| ES (1) | ES2032099T3 (en) |
| FI (1) | FI98531C (en) |
| ZA (1) | ZA891644B (en) |
Families Citing this family (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0790534A (en) * | 1993-07-19 | 1995-04-04 | Mitsubishi Materials Corp | Corrosion resisting member for sulfuric acid dew point corrosion |
| EP0648850B1 (en) * | 1993-09-20 | 1997-08-13 | Mitsubishi Materials Corporation | Nickel-based alloy |
| SE513552C2 (en) * | 1994-05-18 | 2000-10-02 | Sandvik Ab | Use of a Cr-Ni-Mo alloy with good workability and structural stability as a component in waste incineration plants |
| US6280540B1 (en) | 1994-07-22 | 2001-08-28 | Haynes International, Inc. | Copper-containing Ni-Cr-Mo alloys |
| US6110422A (en) * | 1998-07-24 | 2000-08-29 | Inco Alloys International, Inc. | Ductile nickel-iron-chromium alloy |
| US6579388B2 (en) | 2001-06-28 | 2003-06-17 | Haynes International, Inc. | Aging treatment for Ni-Cr-Mo alloys |
| US6860948B1 (en) | 2003-09-05 | 2005-03-01 | Haynes International, Inc. | Age-hardenable, corrosion resistant Ni—Cr—Mo alloys |
| US6544362B2 (en) | 2001-06-28 | 2003-04-08 | Haynes International, Inc. | Two step aging treatment for Ni-Cr-Mo alloys |
| KR100495928B1 (en) * | 2002-04-12 | 2005-06-16 | 소용호 | heating tube for gas scrubber |
| US7998571B2 (en) | 2004-07-09 | 2011-08-16 | James Hardie Technology Limited | Composite cement article incorporating a powder coating and methods of making same |
| US20060093509A1 (en) * | 2004-11-03 | 2006-05-04 | Paul Crook | Ni-Cr-Mo alloy having improved corrosion resistance |
| US7785532B2 (en) * | 2006-08-09 | 2010-08-31 | Haynes International, Inc. | Hybrid corrosion-resistant nickel alloys |
| US8557391B2 (en) | 2011-02-24 | 2013-10-15 | Guardian Industries Corp. | Coated article including low-emissivity coating, insulating glass unit including coated article, and/or methods of making the same |
| US8679633B2 (en) | 2011-03-03 | 2014-03-25 | Guardian Industries Corp. | Barrier layers comprising NI-inclusive alloys and/or other metallic alloys, double barrier layers, coated articles including double barrier layers, and methods of making the same |
| US8679634B2 (en) | 2011-03-03 | 2014-03-25 | Guardian Industries Corp. | Functional layers comprising Ni-inclusive ternary alloys and methods of making the same |
| US8709604B2 (en) | 2011-03-03 | 2014-04-29 | Guardian Industries Corp. | Barrier layers comprising Ni-inclusive ternary alloys, coated articles including barrier layers, and methods of making the same |
| US8790783B2 (en) | 2011-03-03 | 2014-07-29 | Guardian Industries Corp. | Barrier layers comprising Ni and/or Ti, coated articles including barrier layers, and methods of making the same |
| US9970091B2 (en) | 2015-07-08 | 2018-05-15 | Haynes International, Inc. | Method for producing two-phase Ni—Cr—Mo alloys |
| RU2672647C1 (en) * | 2017-08-01 | 2018-11-16 | Акционерное общество "Чепецкий механический завод" | Corrosive-resistant alloy |
| US10577679B1 (en) | 2018-12-04 | 2020-03-03 | General Electric Company | Gamma prime strengthened nickel superalloy for additive manufacturing |
| CN112522541B (en) * | 2019-09-17 | 2022-03-18 | 东北大学 | Nickel-based alloy desulfurizing agent and preparation method thereof |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3650734A (en) * | 1969-06-16 | 1972-03-21 | Cyclops Corp | Wrought welding alloys |
| US4129464A (en) * | 1977-08-24 | 1978-12-12 | Cabot Corporation | High yield strength Ni-Cr-Mo alloys and methods of producing the same |
| US4533414A (en) * | 1980-07-10 | 1985-08-06 | Cabot Corporation | Corrosion-resistance nickel alloy |
| JPS57134546A (en) * | 1981-02-13 | 1982-08-19 | Sumitomo Metal Ind Ltd | Corrosion resistant alloy |
| US4626408A (en) * | 1984-09-20 | 1986-12-02 | Nippon Yakin Kogyo Kabushiki Kaisha | Ni-based alloy excellent in intergranular corrosion resistance, stress corrosion cracking resistance and hot workability |
| JPH0674472B2 (en) * | 1986-01-07 | 1994-09-21 | 住友金属工業株式会社 | High-strength Ni-based alloy with excellent corrosion resistance |
| JPH0674471B2 (en) * | 1986-01-07 | 1994-09-21 | 住友金属工業株式会社 | High corrosion resistance Ni-based alloy |
-
1988
- 1988-03-03 DE DE3806799A patent/DE3806799A1/en not_active Withdrawn
-
1989
- 1989-02-21 US US07/313,622 patent/US4906437A/en not_active Expired - Lifetime
- 1989-02-22 AT AT89200444T patent/ATE76109T1/en not_active IP Right Cessation
- 1989-02-22 EP EP89200444A patent/EP0334410B1/en not_active Expired - Lifetime
- 1989-02-22 DE DE8989200444T patent/DE58901363D1/en not_active Expired - Lifetime
- 1989-02-22 ES ES198989200444T patent/ES2032099T3/en not_active Expired - Lifetime
- 1989-03-01 FI FI890971A patent/FI98531C/en not_active IP Right Cessation
- 1989-03-01 CA CA000592500A patent/CA1327716C/en not_active Expired - Lifetime
- 1989-03-02 AU AU30865/89A patent/AU616244B2/en not_active Expired
- 1989-03-02 BR BR898900968A patent/BR8900968A/en not_active IP Right Cessation
- 1989-03-02 JP JP1050936A patent/JP3004654B2/en not_active Expired - Lifetime
- 1989-03-02 KR KR1019890002636A patent/KR0122078B1/en not_active IP Right Cessation
- 1989-03-03 ZA ZA891644A patent/ZA891644B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01272737A (en) | 1989-10-31 |
| EP0334410A1 (en) | 1989-09-27 |
| FI98531C (en) | 1997-07-10 |
| BR8900968A (en) | 1989-10-24 |
| DE3806799A1 (en) | 1989-09-14 |
| KR0122078B1 (en) | 1997-12-04 |
| DE58901363D1 (en) | 1992-06-17 |
| CA1327716C (en) | 1994-03-15 |
| JP3004654B2 (en) | 2000-01-31 |
| US4906437A (en) | 1990-03-06 |
| ZA891644B (en) | 1990-11-28 |
| ATE76109T1 (en) | 1992-05-15 |
| FI890971A0 (en) | 1989-03-01 |
| KR890014767A (en) | 1989-10-25 |
| AU3086589A (en) | 1989-09-07 |
| FI98531B (en) | 1997-03-27 |
| ES2032099T3 (en) | 1993-01-01 |
| FI890971A (en) | 1989-09-04 |
| AU616244B2 (en) | 1991-10-24 |
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