EP2099941B1 - Platinum alloy for jewelry - Google Patents

Platinum alloy for jewelry Download PDF

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Publication number
EP2099941B1
EP2099941B1 EP08846709A EP08846709A EP2099941B1 EP 2099941 B1 EP2099941 B1 EP 2099941B1 EP 08846709 A EP08846709 A EP 08846709A EP 08846709 A EP08846709 A EP 08846709A EP 2099941 B1 EP2099941 B1 EP 2099941B1
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weight
platinum
ruthenium
alloy
platinum alloy
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German (de)
French (fr)
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EP2099941A1 (en
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Georg Steiner
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Heimerle and Meule GmbH
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Heimerle and Meule GmbH
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C5/00—Alloys based on noble metals
    • C22C5/04—Alloys based on a platinum group metal
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C27/00—Making jewellery or other personal adornments
    • A44C27/001—Materials for manufacturing jewellery
    • A44C27/002—Metallic materials
    • A44C27/003—Metallic alloys

Definitions

  • the invention relates to new platinum jewelery alloys as well as semi-finished products produced with the aid of these alloys.
  • platinum Because of its characteristic gray-white color, platinum has long been used in jewelry production and thus also in the jewelry industry. However, like all precious metals in the elemental state, platinum is comparatively soft, so that although it can be processed easily, it does not have the necessary strength and durability for everyday use. This is why platinum is usually alloyed with other metals, especially in the jewelery sector, in order to increase its strength. Such platinum alloys have therefore gained in recent years, an increasingly important in the jewelry industry.
  • Dual-material systems of platinum and copper are also known, for example Pt960 / Cu40. Although such alloys are easily machinable and also easily cold formable, they are comparatively soft and not suitable for jewelery purposes for every product.
  • platinum alloys used for ornamentation are based on the addition of iridium to platinum, with systems such as Pt800 / Ir200 and Pt950 / Ir50 being known, for example. Even such systems are relatively hard and therefore comparatively difficult without cutting and machinable.
  • the binary systems platinum / palladium or platinum / gold should also be mentioned, whereby systems such as Pt900 / Pd100 or Pt900 / Au100 and Pt950 / Pd50 or Pt950 / Au50 are also known here.
  • the palladium alloys are comparatively soft with the already mentioned disadvantages of such a soft material.
  • the original gray-white color of the platinum is shifted by the addition of palladium in the direction of gray, which is often not desirable for jewelry purposes. An undesirable color shift can also occur due to the gold addition in the platinum-gold alloys.
  • the high price of gold currently speaks against the use of gold as an alloying additive.
  • the JP 61186439 A discloses a platinum jewelery alloy consisting of 84% by weight to 96% by weight of platinum, 1% by weight to 15% by weight of palladium, 0.5% by weight to 10% by weight of copper and 0.1% by weight % to 7% by weight of molybdenum and / or tungsten. Accordingly, this alloy necessarily contains palladium, the use of which can lead to the abovementioned disadvantages (reduced hardness of the alloy, shift of the color of the alloy in the direction of gray).
  • the desired alloy on the one hand a high hardness and thus have a high resistance to abrasion. Also a good polishability with mechanical aids is desired.
  • the alloy should be easy to process, ie have good cold workability and should also be easy to machine, for example by turning, milling and the like. This should result in less tool wear.
  • the platinum content in the alloys according to the invention is at least 95% by weight and is preferably between 95.1% by weight and 95.5% by weight.
  • the tungsten content in the alloys according to the invention is preferably between 3.5% by weight and 4.0% by weight, in particular between 3.6% by weight and 3.9% by weight. Within the latter range, tungsten contents between 3.7% by weight and 3.8% by weight are again preferred.
  • the copper content is preferably between 0.5% by weight and 2% by weight, in particular between 0.7% by weight and 1.3% by weight. Within the last-mentioned range, copper contents between 0.9% by weight and 1.1% by weight are of particular advantage here.
  • the content of the elements from the group of ruthenium, rhodium and iridium total contents of at least one of these elements between 0.02% by weight and 0.5% by weight should be emphasized here. Within this range, the respective contents are preferably between 0.03 wt .-% and 0.1 wt .-%, in particular between 0.04 wt .-% and 0.07 wt .-%.
  • ruthenium is preferably used as the element from the group of ruthenium, rhodium and iridium in the alloys according to the invention.
  • the invention comprises a semi-finished product for decorative purposes, which is at least partially, but preferably completely, made of the described alloys according to the invention.
  • these semi-finished products are prefabricated geometric shapes from the corresponding alloy material, which are then further processed manually or industrially to the respective jewelry end products.
  • such semi-finished products are generally for example pipes, rods, rings, sheets, strips, wires and the like.
  • the semifinished products according to the invention are tubular or annular semi-finished products.
  • the resulting alloy melt is cold worked by drawing into a tube to form a fine-grained texture.
  • the color of the obtained alloy corresponds to the desired platinum color, namely gray-white.
  • the resulting tubular semi-finished products can be processed in the usual way artisanal or industrial in conventional jewelry products, the material has sufficient hardness with good cold workability.
  • the material can also be machined very well and is easy to polish. Any kind of setting for gems can be made of the material of the invention or incorporated into this by means of suitable tools.
  • the material is also diamond able.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Adornments (AREA)

Abstract

The invention relates to a platinum alloy for jewelry, comprising or consisting preferably of the following components: - 94.0 wt.-% to 96.5 wt.-% platinum, - 2.5 wt.-% to 4.5 wt.-% tungsten, - 0.5 wt.-% to 3.0 wt.-% copper, and - 0.02 wt.-% to 2.0 wt.-% of at least one element from the group ruthenium, rhodium and iridium.

Description

Die Erfindung betrifft neue Platin-Schmucklegierungen sowie mit Hilfe dieser Legierungen gefertigte Halbzeuge.The invention relates to new platinum jewelery alloys as well as semi-finished products produced with the aid of these alloys.

Platin hat wegen seiner charakteristischen grau-weißen Farbe schon seit langem Eingang in die Schmuckherstellung und damit auch in die Schmuckindustrie gefunden. Allerdings ist Platin wie alle Edelmetalle im elementaren Zustand vergleichsweise weich, so daß es zwar leicht bearbeitet werden kann, jedoch für den Alltagsgebrauch nicht die notwendige Festigkeit und Beständigkeit aufweist. Deshalb wird Platin gerade auch im Schmuckbereich in der Regel mit weiteren Metallen legiert, um seine Festigkeit zu erhöhen. Solche Platinlegierungen haben deshalb in den letzten Jahren eine immer größere Bedeutung im Schmuckbereich erlangt.Because of its characteristic gray-white color, platinum has long been used in jewelry production and thus also in the jewelry industry. However, like all precious metals in the elemental state, platinum is comparatively soft, so that although it can be processed easily, it does not have the necessary strength and durability for everyday use. This is why platinum is usually alloyed with other metals, especially in the jewelery sector, in order to increase its strength. Such platinum alloys have therefore gained in recent years, an increasingly important in the jewelry industry.

Dementsprechend sind eine Vielzahl von Platinlegierungen bekannt und werden auch bereits kommerziell verwendet.Accordingly, a variety of platinum alloys are known and are already being used commercially.

So gibt es beispielsweise Zweistoffsysteme aus Platin und Ruthenium bzw. Platin und Wolfram, wobei in der Regel das Platin jeweils in einem Gewichtsanteil von 95 Gew.-% (950 ‰) und das Ruthenium bzw. Wolfram in einem Gewichtsanteil von 5 Gew.-% (50 ‰) vorhanden ist. Derartige Legierungen sind zwar hart und dementsprechend widerstandsfähig gegen Abrieb, jedoch schwer kaltverformbar und nur unter hohem Werkzeugverschleiß spanabhebend bearbeitbar.For example, there are binary systems of platinum and ruthenium or platinum and tungsten, wherein usually the platinum in each case in a weight fraction of 95 wt .-% (950 ‰) and the ruthenium or tungsten in a weight fraction of 5 wt .-% (50 ‰) is present. Although such alloys are hard and therefore resistant to abrasion, but difficult cold forming and machinable only with high tool wear.

Zweistoffsysteme aus Platin und Kupfer sind ebenfalls bekannt, beispielsweise Pt960/Cu40. Derartige Legierungen sind zwar leicht spanabhebend bearbeitbar und auch leicht kaltumformbar, sie sind jedoch vergleichsweise weich und für Schmuckzwecke nicht für jedes Produkt verwendbar.Dual-material systems of platinum and copper are also known, for example Pt960 / Cu40. Although such alloys are easily machinable and also easily cold formable, they are comparatively soft and not suitable for jewelery purposes for every product.

Andere Platinlegierungen, die für Schmuckzwecke eingesetzt werden, basieren auf dem Zusatz von Iridium zu Platin, wobei beispielsweise Systeme wie Pt800/Ir200 und Pt950/Ir50 bekannt sind. Auch solche Systeme sind vergleichsweise hart und dementsprechend vergleichsweise schwer spanlos und spanabhebend bearbeitbar.Other platinum alloys used for ornamentation are based on the addition of iridium to platinum, with systems such as Pt800 / Ir200 and Pt950 / Ir50 being known, for example. Even such systems are relatively hard and therefore comparatively difficult without cutting and machinable.

Schließlich sollen hier noch die Zweistoffsysteme Platin/Palladium bzw. Platin/Gold erwähnt werden, wobei auch hier unter anderem Systeme wie Pt900/Pd100 bzw. Pt900/Au100 und Pt950/Pd50 bzw. Pt950/Au50 bekannt sind. Dabei sind allerdings die Palladiumlegierungen vergleichsweise weich mit den bereits erwähnten Nachteilen eines solchen weichen Materials. Außerdem wird die ursprüngliche grau-weiße Farbe des Platins durch den Zusatz an Palladium in Richtung grau verschoben, was für Schmuckzwecke häufig nicht erwünscht ist.
Eine unerwünschte Farbverschiebung kann auch durch den Goldzusatz bei den Platin-Gold-Legierungen auftreten. Außerdem spricht der hohe Goldpreis zumindest derzeit gegen die Verwendung von Gold als Legierungszusatz.Finally, the binary systems platinum / palladium or platinum / gold should also be mentioned, whereby systems such as Pt900 / Pd100 or Pt900 / Au100 and Pt950 / Pd50 or Pt950 / Au50 are also known here. However, the palladium alloys are comparatively soft with the already mentioned disadvantages of such a soft material. In addition, the original gray-white color of the platinum is shifted by the addition of palladium in the direction of gray, which is often not desirable for jewelry purposes.
An undesirable color shift can also occur due to the gold addition in the platinum-gold alloys. In addition, the high price of gold currently speaks against the use of gold as an alloying additive.

Die JP 61186439 A offenbart eine Platin-Schmucklegierung, die aus 84 Gew.-% bis 96 Gew-% Platin, 1 Gew.-% bis 15 Gew.% Palladium, 0,5 Gew.-% bis 10 Gew.% Kupfer und 0,1 Gew.-% bis 7 Gew.% Molybdän und/oder Wolfram besteht. Dementsprechend enthält diese Legierung zwingend Palladium, dessen Verwendung zu den oben genannten Nachteilen (reduzierte Härte der Legierung, Verschiebung der Farbe der Legierung in Richtung grau) führen kann.The JP 61186439 A discloses a platinum jewelery alloy consisting of 84% by weight to 96% by weight of platinum, 1% by weight to 15% by weight of palladium, 0.5% by weight to 10% by weight of copper and 0.1% by weight % to 7% by weight of molybdenum and / or tungsten. Accordingly, this alloy necessarily contains palladium, the use of which can lead to the abovementioned disadvantages (reduced hardness of the alloy, shift of the color of the alloy in the direction of gray).

Wie aus den bisherigen Ausführungen hervorgeht, besteht dementsprechend der Bedarf, eine Platinlegierung, insbesondere für Schmuckzwecke, zur Verfügung zu stellen, die in Bezug auf ihre Verarbeitungseigenschaften optimiert ist. So soll die gewünschte Legierung auf der einen Seite eine möglichst hohe Härte und damit eine hohe Widerstandsfähigkeit gegen Abrieb besitzen. Auch eine gute Polierbarkeit mit mechanischen Hilfsmitteln ist erwünscht. Zum anderen soll die Legierung trotz ihrer Härte gut bearbeitbar sein, d. h. eine gute Kaltumformbarkeit besitzen und auch leicht spanabhebend, beispielsweise durch Drehen, Fräsen und dergleichen bearbeitbar sein. Dies soll in einem geringeren Werkzeugverschleiß resultieren. Idealerweise ist die erwünschte Legierung diamantierfähig, d. h. mit Hilfe von Naturdiamanten mechanisch bearbeitbar.Accordingly, as is apparent from the foregoing, there is a need to provide a platinum alloy, particularly for decorative purposes, in terms of its processing properties is optimized. So should the desired alloy on the one hand a high hardness and thus have a high resistance to abrasion. Also a good polishability with mechanical aids is desired. On the other hand, despite its hardness, the alloy should be easy to process, ie have good cold workability and should also be easy to machine, for example by turning, milling and the like. This should result in less tool wear. Ideally, the desired alloy diamond-able, ie mechanically machinable with the help of natural diamonds.

Diese Aufgaben werden mindestens teilweise gelöst durch die Platin-Schmucklegierungen des Ansprüchs 1. Bevorzugte Ausführungen dieser Legierungen sind in den abhängigen Ansprüchen 2 bis 6 beschrieben. Weiter umfaßt die Erfindung das Halbzeug zur Schmuckherstellung gemäß Anspruch 7 sowie seine bevorzugte Ausführung gemäß Anspruch 8. Der Wortlaut sämtlicher Ansprüche wird hiermit durch Bezugnahme zum Inhalt dieser Beschreibung gemacht.These objects are at least partially solved by the platinum jewelery alloys of claim 1. Preferred embodiments of these alloys are described in dependent claims 2 to 6. Further, the invention comprises the semifinished product for jewelery production according to claim 7 and its preferred embodiment according to claim 8. The wording of all claims is hereby incorporated by reference into the content of this description.

Die erfindungsgemäße Platin-Schmucklegierung besteht erfindungsgemäß aus den folgenden Bestandteilen, nämlich

  • 94,0 Gew.-% bis 96,5 Gew.-% Platin (Pt),
  • 2,5 Gew.-% bis 4,5 Gew.-% Wolfram (W),
  • 0,5 Gew.-% bis 3,0 Gew.-% Kupfer (Cu), und
  • 0,02 Gew.-% bis 2,0 Gew.-% mindestens eines Elements aus der Gruppe Ruthenium (Ru), Rhodium (Rh) und Iridium (Ir).
According to the invention, the platinum jewelery alloy according to the invention consists of the following constituents, namely
  • 94.0% by weight to 96.5% by weight of platinum (Pt),
  • 2.5 wt.% To 4.5 wt.% Tungsten (W),
  • 0.5 wt .-% to 3.0 wt .-% copper (Cu), and
  • 0.02 wt .-% to 2.0 wt .-% of at least one element from the group ruthenium (Ru), rhodium (Rh) and iridium (Ir).

Bezieht man die genannten Gewichtsanteile, wie im Schmuckbereich üblich, auf das Gesamtgewicht 1.000 (‰; englisch: ppt = parts per thousand), so schreiben sich die oben genannten Gewichtsanteile wie folgt:

  • 940 bis 965 Platin,
  • 25 bis 45 Wolfram,
  • 5 bis 30 Kupfer, und
  • 0,2 bis 20 Ruthenium, Rhodium und/oder Iridium.
If one refers to the mentioned weight proportions, as usual in the jewelery sector, to the total weight of 1,000 (‰, so-called ppt = parts per thousand), then the abovementioned proportions by weight are written as follows:
  • 940 to 965 platinum,
  • From 25 to 45 tungsten,
  • 5 to 30 copper, and
  • 0.2 to 20 ruthenium, rhodium and / or iridium.

In Weiterbildung beträgt der Platingehalt bei den erfindungsgemäßen Legierungen mindestens 95 Gew.-% und liegt dabei vorzugsweise zwischen 95,1 Gew.-% und 95,5 Gew.-%.In a further development, the platinum content in the alloys according to the invention is at least 95% by weight and is preferably between 95.1% by weight and 95.5% by weight.

Bei weiter bevorzugten Ausführungsformen beträgt der Wolframgehalt bei den erfindungsgemäßen Legierungen vorzugsweise zwischen 3,5 Gew.-% und 4,0 Gew.-%, insbesondere zwischen 3,6 Gew.-% und 3,9 Gew.-%. Innerhalb des zuletzt genannten Bereichs sind wiederum Wolframgehalte zwischen 3,7 Gew.-% und 3,8 Gew.-% weiter bevorzugt.In further preferred embodiments, the tungsten content in the alloys according to the invention is preferably between 3.5% by weight and 4.0% by weight, in particular between 3.6% by weight and 3.9% by weight. Within the latter range, tungsten contents between 3.7% by weight and 3.8% by weight are again preferred.

Bei ebenfalls bevorzugten Ausführungsformen der erfindungsgemäßen Legierungen liegt der Kupfergehalt vorzugsweise zwischen 0,5 Gew.-% und 2 Gew.-%, insbesondere zwischen 0,7 Gew.-% und 1,3 Gew.-%. Hier sind innerhalb des zuletzt genannten Bereichs Kupfergehalte zwischen 0,9 Gew.-% und 1,1 Gew.-% von besonderem Vorteil.In likewise preferred embodiments of the alloys according to the invention, the copper content is preferably between 0.5% by weight and 2% by weight, in particular between 0.7% by weight and 1.3% by weight. Within the last-mentioned range, copper contents between 0.9% by weight and 1.1% by weight are of particular advantage here.

Bezüglich des Gehalts der Elemente aus der Gruppe Ruthenium, Rhodium und Iridium sind hier Gesamtgehalte mindestens eines dieser Elemente zwischen 0,02 Gew.-% und 0,5 Gew.-% hervorzuheben. Innerhalb dieses Bereichs liegen die entsprechenden Gehalte vorzugsweise zwischen 0,03 Gew.-% und 0,1 Gew.-%, insbesondere zwischen 0,04 Gew.-% und 0,07 Gew.-%.With regard to the content of the elements from the group of ruthenium, rhodium and iridium, total contents of at least one of these elements between 0.02% by weight and 0.5% by weight should be emphasized here. Within this range, the respective contents are preferably between 0.03 wt .-% and 0.1 wt .-%, in particular between 0.04 wt .-% and 0.07 wt .-%.

In Weiterbildung wird bei den erfindungsgemäßen Legierungen als Element aus der Gruppe Ruthenium, Rhodium und Iridium vorzugsweise Ruthenium eingesetzt.In a further development, ruthenium is preferably used as the element from the group of ruthenium, rhodium and iridium in the alloys according to the invention.

Schließlich umfaßt die Erfindung ein Halbzeug für Schmuckzwecke, das mindestens teilweise, vorzugsweise aber vollständig, aus den beschriebenen erfindungsgemäßen Legierungen gefertigt ist. Bekanntlich handelt es sich bei diesen Halbzeugen um vorgefertigte geometrische Formen aus dem entsprechenden Legierungsmaterial, die anschließend handwerklich oder industriell zu den jeweiligen Schmuck-Endprodukten weiterverarbeitet werden. Im Schmuckbereich handelt es sich bei solchen Halbzeugen in der Regel beispielsweise um Rohre, Stangen, Ringe, Bleche, Bänder, Drähte und dergleichen.
Erfindungsgemäß ist es bevorzugt, wenn es sich bei den erfindungsgemäßen Halbzeugen um rohrartige oder ringartige Halbzeuge handelt.Finally, the invention comprises a semi-finished product for decorative purposes, which is at least partially, but preferably completely, made of the described alloys according to the invention. As is known, these semi-finished products are prefabricated geometric shapes from the corresponding alloy material, which are then further processed manually or industrially to the respective jewelry end products. In the jewelry sector, such semi-finished products are generally for example pipes, rods, rings, sheets, strips, wires and the like.
According to the invention, it is preferred if the semifinished products according to the invention are tubular or annular semi-finished products.

Die geschilderten und weitere Merkmale der Erfindung ergeben sich aus dem nachfolgenden Beispiel in Verbindung mit den Unteransprüchen. Dabei können die einzelnen Merkmale für sich allein oder in Kombination miteinander verwirklicht sein.The described and other features of the invention will become apparent from the following example in conjunction with the subclaims. The individual features can be realized alone or in combination with each other.

Beispielexample

Zur Herstellung einer erfindungsgemäßen Platinlegierung werden bezogen auf das Gesamtgewicht 1.000 (in ‰) die folgenden Metalle in Form ihrer reinen Feinmetalle bereitgestellt:

  • 952 Platin (Pt),
  • 37,7 Wolfram (W),
  • 9,8 Kupfer (Cu), und
  • 0,5 Ruthenium (Ru).
For the production of a platinum alloy according to the invention, based on the total weight of 1,000 (in ‰), the following metals are provided in the form of their pure fine metals:
  • 952 platinum (Pt),
  • 37.7 tungsten (W),
  • 9.8 copper (Cu), and
  • 0.5 ruthenium (Ru).

Die so erhaltene Mischung wird bei einer Temperatur von ca. 1.800 °C zu einer Legierung zusammengeschmolzen, die dementsprechend die folgende Zusammensetzung besitzt:

  • 95,2 Gew:-% Platin,
  • 3,77 Gew.-% Wolfram,
  • 0,98 Gew.-% Kupfer, und
  • 0,05 Gew.-% Ruthenium.
The mixture thus obtained is melted together at a temperature of about 1800 ° C. to give an alloy which accordingly has the following composition:
  • 95.2% by weight of platinum,
  • 3.77 wt.% Tungsten,
  • 0.98% by weight of copper, and
  • 0.05% by weight of ruthenium.

Die erhaltene Legierungsschmelze wird durch Ziehen zu einem Rohr kaltverformt, wobei sich ein feinkörniges Gefüge einstellt. Die Farbe der erhaltenen Legierung entspricht der erwünschten Platinfarbe, nämlich grau-weiß.The resulting alloy melt is cold worked by drawing into a tube to form a fine-grained texture. The color of the obtained alloy corresponds to the desired platinum color, namely gray-white.

Die erhaltenen rohrartigen Halbzeuge können in üblicher Weise handwerklich oder industriell in übliche Schmuckprodukte weiterverarbeitet werden, wobei das Material eine ausreichende Härte bei guter Kaltverformbarkeit besitzt. Das Material läßt sich auch sehr gut spanabhebend bearbeiten und ist gut polierbar. Jede Art von Fassung für Schmucksteine kann aus dem erfindungsgemäßen Material hergestellt oder in dieses mittels geeigneter Werkzeuge eingearbeitet werden. Das Material ist auch diamantierfähig.The resulting tubular semi-finished products can be processed in the usual way artisanal or industrial in conventional jewelry products, the material has sufficient hardness with good cold workability. The material can also be machined very well and is easy to polish. Any kind of setting for gems can be made of the material of the invention or incorporated into this by means of suitable tools. The material is also diamond able.

Claims (8)

  1. Platinum alloy for jewellery, consisting of
    - 94.0% by weight to 96.5% by weight platinum,
    - 2.5% by weight to 4.5% by weight tungsten,
    - 0.5% by weight to 3.0% by weight copper, and
    - 0.02% by weight to 2.0% by weight of at least one element from the group consisting of ruthenium, rhodium and iridium.
  2. Platinum alloy for jewellery according to Claim 1, characterized in that the platinum content is ≥ 95% by weight, preferably between 95.1% by weight and 95.5% by weight.
  3. Platinum alloy for jewellery according to Claim 1 or Claim 2, characterized in that the tungsten content is between 3.5% by weight and 4.0% by weight, preferably between 3.6% by weight and 3.9% by weight, in particular between 3.7% by weight and 3.8% by weight.
  4. Platinum alloy for jewellery according to one of the preceding claims, characterized in that the copper content is between 0.5% by weight and 2.0% by weight, preferably between 0.7% by weight and 1.3% by weight, in particular between 0.9% by weight and 1.1% by weight.
  5. Platinum alloy for jewellery according to one of the preceding claims, characterized in that the content of the elements from the group consisting of ruthenium, rhodium and iridium is between 0.02% by weight and 0.5% by weight, preferably between 0.03% by weight and 0.1% by weight, in particular between 0.04% by weight and 0.07% by weight.
  6. Platinum alloy for jewellery according to one of the preceding claims, characterized in that the element from the group consisting of ruthenium, rhodium and iridium is ruthenium.
  7. Semifinished product for the production of jewellery, characterized in that this semifinished product is produced at least partially, preferably completely, from an alloy according to one of the preceding claims.
  8. Semifinished product according to Claim 7, characterized in that this semifinished product is a tubular or annular semifinished product.
EP08846709A 2007-11-08 2008-11-04 Platinum alloy for jewelry Active EP2099941B1 (en)

Applications Claiming Priority (2)

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DE102007054871A DE102007054871A1 (en) 2007-11-08 2007-11-08 Platinum jewelery alloy
PCT/EP2008/009274 WO2009059736A1 (en) 2007-11-08 2008-11-04 Platinum alloy for jewelry

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EP2099941A1 EP2099941A1 (en) 2009-09-16
EP2099941B1 true EP2099941B1 (en) 2011-01-05

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EP (1) EP2099941B1 (en)
AT (1) ATE494398T1 (en)
DE (3) DE102007054871A1 (en)
HK (1) HK1130850A1 (en)
WO (1) WO2009059736A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202009013202U1 (en) * 2009-04-07 2009-12-24 Heimerle + Meule Gmbh Platinum jewelery alloy
CN103725915A (en) * 2012-10-15 2014-04-16 深圳市星光达珠宝首饰实业有限公司 Alloy material for manufacturing ornaments and preparation method of alloy material
DE102019213587A1 (en) * 2019-09-06 2021-03-11 Heimerle + Meule Gmbh Platinum jewelry alloy

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1152826B (en) * 1957-06-22 1963-08-14 Heraeus Gmbh W C Use of a platinum metal alloy as a material for tension bands in measuring instruments
FR2381832A1 (en) * 1977-02-23 1978-09-22 Johnson Matthey Co Ltd JEWELERY ALLOYS
JPS61186439A (en) 1985-02-14 1986-08-20 Tanaka Kikinzoku Kogyo Kk Platinum alloy for ornament
JPS61281836A (en) * 1985-06-07 1986-12-12 Tanaka Kikinzoku Kogyo Kk Platinum alloy for ornament
JPS61281840A (en) * 1985-06-07 1986-12-12 Tanaka Kikinzoku Kogyo Kk Platinum alloy for ornament
JPS61281839A (en) * 1985-06-07 1986-12-12 Tanaka Kikinzoku Kogyo Kk Platinum alloy for ornament
JPS62130238A (en) * 1985-11-29 1987-06-12 Citizen Watch Co Ltd Hard platinum alloy for ornamentation
DE3712839C1 (en) * 1987-04-15 1988-04-21 Degussa Use of platinum alloys having spring properties for jewellery pieces
JPH0243331A (en) * 1988-08-02 1990-02-13 Tokuriki Honten Co Ltd Platinum alloy for ornament

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DE102007054871A1 (en) 2009-05-20
ATE494398T1 (en) 2011-01-15
DE502008002203D1 (en) 2011-02-17
HK1130850A1 (en) 2010-01-08
WO2009059736A1 (en) 2009-05-14
DE202008017584U1 (en) 2010-01-14
EP2099941A1 (en) 2009-09-16

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