EP0640695B1 - Corrosion resistant alloy, useful as material for parts in contact with living beings - Google Patents
Corrosion resistant alloy, useful as material for parts in contact with living beings Download PDFInfo
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- EP0640695B1 EP0640695B1 EP93890161A EP93890161A EP0640695B1 EP 0640695 B1 EP0640695 B1 EP 0640695B1 EP 93890161 A EP93890161 A EP 93890161A EP 93890161 A EP93890161 A EP 93890161A EP 0640695 B1 EP0640695 B1 EP 0640695B1
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- 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
- C22C38/38—Ferrous alloys, e.g. steel alloys containing chromium with more than 1.5% by weight of manganese
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- G—PHYSICS
- G04—HOROLOGY
- G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
- G04B37/00—Cases
- G04B37/22—Materials or processes of manufacturing pocket watch or wrist watch cases
Definitions
- the invention relates to the use of a corrosion-resistant alloy as a material for in particular structured parts of clothing and / or for jewelry and articles of daily use which are at least partially in contact with the skin of living beings, in particular humans.
- the skin of living things can be hypersensitive when irritated by certain substances or rays. Such overreactions are called allergies, and even living beings of the same genus can show no or hypersensitive, possibly different intensity reactions to the same stimuli. Many substances are known to affect the skin of humans in particular, which may cause allergies.
- Alloys are known (EP-A-0422360, FR-A-1204510, FR-A-2071667, GB-A-506905), which may have good corrosion resistance, certain mechanical properties or against certain chemical substances and / or under mechanical stress conditions Have formability, have improved castability and the like. However, the problem of triggering allergies by contact with objects made from these alloys has not been solved.
- nickel allergy is particularly common. given. It was found that not only pure nickel but also alloys with a nickel concentration of a few percent can trigger an allergic reaction. Living things, especially humans, inevitably come into contact with metallic materials, especially stainless steels and alloys, which can contain nickel. Many everyday objects such as wristwatches, watch straps, eyeglass frames, costume jewelery and the like, as well as parts of or on items of clothing, for example fasteners, rivets on jeans and also Parts on medical, possibly prosthetic, support or holding devices to be worn on the body are manufactured from metallic materials in particular for reasons of the required material strength and the preferred material properties.
- the parts In order to achieve the rust resistance of the parts, particularly when cleaning or storage, they can e.g. electroplated, optionally with chrome.
- the disadvantages of such coatings are high manufacturing costs and peeling caused by cracks in the layer. If a triggering of a nickel allergy is to be avoided with certainty, the classic rust-resistant steels with approx. 8 to 12% by weight nickel, e.g. DIN material No. 1.4401 and No. 1.4404, are not used for parts that are at least partially in contact with the skin.
- DE-U-9215141 it has already been proposed to limit the Ni content of the material, which is solidly alloyed with nitrogen and optionally with molybdenum, to a maximum of 0.2% for jewelry. With this measure of restricting a potential allergen, however, the further property profile of the material or its chemical composition is largely ignored.
- stainless chrome steels can be magnetized, which excludes their use for housings from clocks that can be influenced in their function by magnetic fields. It is known that titanium does not cause any allergic reactions, so it is particularly well tolerated by living things is. However, the high price and the often complex manufacture of titanium parts are major disadvantages.
- the object of the invention is to eliminate the disadvantages of the use of known materials to date and the use of a corrosion-resistant and structurable alloy as a material for parts which are at least partially in contact with the skin of living beings, in particular humans, does not cause allergies , has high strength and has non-magnetic properties.
- the advantages achieved by the invention are essentially to be seen in the fact that, on the one hand, it has been found that a subcritical nickel concentration of the alloy does not trigger any allergic reactions, but on the other hand the material has at least the favorable usage properties known from nickel-containing, austenitic, stainless steels. It is important that the According to the invention, the material is subjected to a solution treatment with subsequent quenching, because it eliminates precipitates, for example carbides and / or structural phases, and stabilizes a purely austenitic structural state. Structural homogeneity or excretions are linked to local differences in the concentration of alloy or trace elements, which results in maximum concentrations and allergic reactions. a chemical structuring ability of the part is also adversely affected by material homogeneity. A molybdenum content of up to 1.6% by weight improves the corrosion resistance and can increase the mechanical properties of the material. Higher levels were not favorable because molybdenum is a ferrite and carbide-forming element.
- the alloy has the concentrations of the elements carbon, manganese, chromium, nitrogen and nickel characterized in claims 2 and 3.
- the one formed from the alloy Part has a cold deformation of at least 5%, preferably greater than 15%.
- the 0.2% proof stress of the material can be increased from approx. 400 N / mm 2 to, for example, approx. 900N / mm 2 by an approx. 25 to 30% degree of deformation.
- a desired yield strength can thus be easily set by a correspondingly large cold deformation without, as has been found by numerous tests, the stress corrosion cracking and the toughness of the material and the fatigue with elastic change in shape, in particular bending, being adversely affected.
- the material according to the invention can be used particularly well for parts of clothing, preferably underwear, such as corsets, possibly medical support corsets, because with good skin tolerance, an easily attainable high material strength enables a small wall thickness of the fastener parts.
- underwear such as corsets, possibly medical support corsets
- good skin tolerance an easily attainable high material strength enables a small wall thickness of the fastener parts.
- the good skin tolerance can also be used advantageously when using the alloy for everyday objects such as spectacle frames, banknote clips, parts of writing implements, household objects, keys, coins and the like.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
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- Organic Chemistry (AREA)
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Description
Die Erfindung befaßt sich mit der Verwendung einer korrosionsbeständigen Legierung als Werkstoff für insbesondere strukturierte Teile der Bekleidung und/oder für Schmuckstücke sowie Gebrauchsgegenstände, die zumindest teilweise in Berührungskontakt mit der Haut von Lebewesen, insbesondere von Menschen, stehen.The invention relates to the use of a corrosion-resistant alloy as a material for in particular structured parts of clothing and / or for jewelry and articles of daily use which are at least partially in contact with the skin of living beings, in particular humans.
Die Haut von Lebewesen kann bei Reizung durch bestimmte Stoffe oder Strahlen überempfindlich reagieren. Derartige Überreaktionen nennt man Allergien, wobei auch Lebewesen derselben Gattung auf gleiche Reize keine oder überempfindliche, gegebenenfalls unterschiedliche Intensität aufweisende Reaktionen zeigen können. Insbesondere die Haut des Menschen betreffend sind viele Stoffe bekannt, welche gegebenenfalls Allergien bewirken können.The skin of living things can be hypersensitive when irritated by certain substances or rays. Such overreactions are called allergies, and even living beings of the same genus can show no or hypersensitive, possibly different intensity reactions to the same stimuli. Many substances are known to affect the skin of humans in particular, which may cause allergies.
Es sind Legierungen bekannt ( EP-A -0422360, FR-A- 1204510, FR-A-2071667, GB-A-506905), welche gegebenenfalls gegen bestimmte chemische Stoffe und/oder bei mechanischen Spannungszuständen gute Korrosionsbeständigkeit aufweisen, besondere mechanische Eigenschaften oder Umformvermögen haben, verbesserte Gießbarkeit und dergleichen mehr besitzen. Das Problem einer Auslösung von Allergien durch Berührungskontakt mit aus diesen Legierungen gefertigten Gegenständen wurde jedoch keiner Lösung zugeführt.Alloys are known (EP-A-0422360, FR-A-1204510, FR-A-2071667, GB-A-506905), which may have good corrosion resistance, certain mechanical properties or against certain chemical substances and / or under mechanical stress conditions Have formability, have improved castability and the like. However, the problem of triggering allergies by contact with objects made from these alloys has not been solved.
Unter den durch eine Berührung mit Metallen ausgelösten, sogenannten Metallberührungsallergien ist die Nickelallergie besonders häufig. gegeben. Dabei wurde festgestellt, daß nicht nur reines Nickel sondern auch Legierungen mit einer Nickelkonzentration von einigen Prozenten schon eine allergische Reaktion auslösen können. Lebewesen, insbesondere Menschen, kommen im täglichen Leben zwangsläufig mit metallischen Werkstoffen, insbesondere rostfreien Stählen und Legierungen, welche Nickel enthalten können, in Berührung. Viele Gegenstände des täglichen Gebrauches wie Armbanduhren, Uhrbänder, Brillengestelle, Modeschmuckstücke und dgl. sowie Teile von bzw. an Kleidungsstücken, z.B. Verschlußeinrichtungen, Hosennieten von Jeans und auch Teile an medizinischen, am Körper zu tragenden, gegebenenfalls prothetischen Stütz- oder Haltevorrichtungen, werden aus Gründen der erforderlichen Materialfestigkeit und der bevorzugten Materialeigenschaften insbesondere aus metallischen Werkstoffen gefertigt.Among the so-called metal contact allergies triggered by contact with metals, nickel allergy is particularly common. given. It was found that not only pure nickel but also alloys with a nickel concentration of a few percent can trigger an allergic reaction. Living things, especially humans, inevitably come into contact with metallic materials, especially stainless steels and alloys, which can contain nickel. Many everyday objects such as wristwatches, watch straps, eyeglass frames, costume jewelery and the like, as well as parts of or on items of clothing, for example fasteners, rivets on jeans and also Parts on medical, possibly prosthetic, support or holding devices to be worn on the body are manufactured from metallic materials in particular for reasons of the required material strength and the preferred material properties.
Um eine, insbesondere bei einer Reinigung oder Lagerung erforderliche Rostbeständigkeit der Teile zu erreichen, können diese z.B. galvanisch, gegebenenfalls mit Chrom, beschichtet werden. Die Nachteile derartiger Beschichtungen sind ein hoher Aufwand bei der Herstellung und ein durch Risse in der Schicht ausgelöstes Abblättern derselben. Soll mit Sicherheit ein Auslösen einer Nickelallergie vermieden werden, so dürfen die klassischen rostbeständigen Stähle mit ca. 8 bis 12 Gew.-% Nickel, wie z.B. DIN Werkstoff Nr. 1.4401 und Nr. 1.4404, für zumindest teilweise in Hautkontakt stehende Teile nicht verwendet werden. Gemäß DE-U-9215141 wurde schon vorgeschlagen, bei Schmuckwaren den Ni-Gehalt des Materials, welches massiv mit Stickstoff und gegebenenfalls mit Molybdän legiert ist, auf höchstens 0,2 % zu beschränken. Bei dieser Maßnahmeder Beschränkung eines potentiellen Allergens- bleibt jedoch das weitere Eigenschaftsprofil des Werkstoffes bzw. dessen chemische Zusammensetzung weitgehend unberücksichtigt.In order to achieve the rust resistance of the parts, particularly when cleaning or storage, they can e.g. electroplated, optionally with chrome. The disadvantages of such coatings are high manufacturing costs and peeling caused by cracks in the layer. If a triggering of a nickel allergy is to be avoided with certainty, the classic rust-resistant steels with approx. 8 to 12% by weight nickel, e.g. DIN material No. 1.4401 and No. 1.4404, are not used for parts that are at least partially in contact with the skin. According to DE-U-9215141, it has already been proposed to limit the Ni content of the material, which is solidly alloyed with nitrogen and optionally with molybdenum, to a maximum of 0.2% for jewelry. With this measure of restricting a potential allergen, however, the further property profile of the material or its chemical composition is largely ignored.
Es wurde schon versucht, nickelfreie rostbeständige Chromstähle wie DIN Werkstoff Nr. 1.4001 und Nr. 1.4016 einzusetzen. Nachteilig bei derartigen Werkstoffen ist, daß an den mehr als 12 Gew.-% Chrom zur Ausbildung einer Passivierungsschicht an der Oberfläche enthaltenden Teilen in Anwesenheit von Schweiß oder Salzlösungen Risse durch durch Zugspannungen ausgelöste örtliche Korrosion, der sog. Spannungsrißkorrosion, gebildet werden können und/oder ein großer fertigungstechnicher Aufwand erforderlich ist. Bei obigen Stählen ist auch ein z.B. chemisches Strukturieren der Oberfläche der Teile mit einer gewünschten Gleichartigkeit zur Erzielung eines besonderen Oberflächenaussehens wie dies für Uhrbänder, Uhrböden, Brillengestelle und dgl. oft vorgesehen ist, meist nicht möglich. Weiters sind rostfreie Chromstähle magnetisierbar, was deren Einsatz für Gehäuse von durch Magnetfelder in ihrer Funktion beeinflußbaren Uhren ausschließt. Es ist bekannt, daß Titan keinerlei allergische Reaktionen auslöst, also besonders gut hautverträglich für Lebewesen ist. Der hohe Preis und eine oft aufwendige Herstellung von Teilen aus Titan stellen jedoch wesentliche Nachteile dar.Attempts have already been made to use nickel-free rust-resistant chrome steels such as DIN material No. 1.4001 and No. 1.4016. A disadvantage of such materials is that, in the presence of sweat or salt solutions, cracks can be formed on the parts containing more than 12% by weight chromium to form a passivation layer on the surface in the presence of sweat or salt solutions, and so-called stress corrosion cracking, and / or a large manufacturing effort is required. In the case of the above steels, for example chemical structuring of the surface of the parts with a desired similarity to achieve a special surface appearance, as is often provided for watch straps, watch floors, eyeglass frames and the like, is usually not possible. Furthermore, stainless chrome steels can be magnetized, which excludes their use for housings from clocks that can be influenced in their function by magnetic fields. It is known that titanium does not cause any allergic reactions, so it is particularly well tolerated by living things is. However, the high price and the often complex manufacture of titanium parts are major disadvantages.
Die Erfindung setzt sich zum Ziel, die Nachteile beim bisherigen Einsatz von bekannten Materialien zu beseitigen und die Verwendung einer korrosionsbeständigen und strukturierfähigen Legierung als Werkstoff für Teile, die zumindest teilweise in Berührungskontakt mit der Haut von Lebewesen, insbesondere von Menschen, stehen, keine Allergien bewirkt, hohe Festigkeit besitzt und amagnetische Eigenschaften aufweist, vorzuschlagen.The object of the invention is to eliminate the disadvantages of the use of known materials to date and the use of a corrosion-resistant and structurable alloy as a material for parts which are at least partially in contact with the skin of living beings, in particular humans, does not cause allergies , has high strength and has non-magnetic properties.
Dieses Ziel wird bei Verwendung einer korrosionsbeständigen Legierung enthaltend in Gew.-%
- Kohlenstoff
- max 0,1
- Silizium
- max 1,0
- Mangan
- 11,0 bis 25,0
- Chrom
- 10,0 bis 20,0
- Molybdän
- bis 1,6
- Stickstoff
- 0,05 bis 0,55
- carbon
- max 0.1
- silicon
- max 1.0
- manganese
- 11.0 to 25.0
- chrome
- 10.0 to 20.0
- molybdenum
- up to 1.6
- nitrogen
- 0.05 to 0.55
Die durch die Erfindung erzielten Vorteile sind im wesentlichen darin zu sehen, daß einerseits, wie gefunden wurde, durch eine unterkritische Nickelkonzentration der Legierung keine allergischen Reaktionen ausgelöst werden, der Werkstoff jedoch andererseits zumindest die von nickelhältigen, austenitischen, rostfreien Stählen bekannten günstigen Gebrauchseigenschaften besitzt. Dabei ist wichtig, daß der Werkstoff erfindungsgemäß einer Lösungsglühbehandlung mit anschließendem Abschrecken unterworfen wird, weil dadurch Ausscheidungen, z.B. Karbide und/oder Gefügephasen aufgelöst und ein rein austenitischer Gefügezustand stabilisiert werden. Gefügehomogenität bzw. Ausscheidungen sind nämlich mit örtlichen Konzentrationsunterschieden von Legierungs- oder Spurenelementen verbunden, wodurch Konzentrationsmaxima entstehen und allergische Reaktionen verursacht werden können. auch eine chemische Strukturierfähigkeit des Teiles wird durch Materialhomogenität nachteilig beeinflußt. Ein Molybdängehalt bis 1,6 Gew.-% verbessert die Korrosionsbeständigkeit und kann die mechanischen Eigenschaften des Werkstoffes anheben. Höhere Gehalte erwiesen sich, weil Molybdän ein ferrit- und karbidbildendes Element ist, als nicht günstig.The advantages achieved by the invention are essentially to be seen in the fact that, on the one hand, it has been found that a subcritical nickel concentration of the alloy does not trigger any allergic reactions, but on the other hand the material has at least the favorable usage properties known from nickel-containing, austenitic, stainless steels. It is important that the According to the invention, the material is subjected to a solution treatment with subsequent quenching, because it eliminates precipitates, for example carbides and / or structural phases, and stabilizes a purely austenitic structural state. Structural homogeneity or excretions are linked to local differences in the concentration of alloy or trace elements, which results in maximum concentrations and allergic reactions. a chemical structuring ability of the part is also adversely affected by material homogeneity. A molybdenum content of up to 1.6% by weight improves the corrosion resistance and can increase the mechanical properties of the material. Higher levels were not favorable because molybdenum is a ferrite and carbide-forming element.
Sowohl für besondere Sicherheit gegen ein Auftreten von allergiebedingten Hauterkrankungen als auch zur Verbesserung der korrosionschemischen Eigenschaften hat es sich als besonders vorteilhaft herausgestellt, wenn die Legierung die in den Ansprüchen 2 und 3 gekennzeichneten Konzentrationen der Elemente Kohlenstoff, Mangan, Chrom, Stickstoff und Nickel aufweist.Both for particular security against the occurrence of allergy-related skin diseases and for improving the corrosion-chemical properties, it has proven to be particularly advantageous if the alloy has the concentrations of the elements carbon, manganese, chromium, nitrogen and nickel characterized in claims 2 and 3.
Um die mechanischen Eigenschaften der Teile, insbesondere die 0,2 % Dehngrenze Rp0,2 von ca. 400/N/mm2 zu erhöhen und leichtere bzw. sicherere Bauformen zu erreichen, kann es weiters von Vorteil sein, daß der aus der Legierung gebildete Teil eine Kaltverformung von mindestens 5%, vorzugsweise von größer als 15 % , aufweist. Mittels einer Kaltverformung kann die 0,2% Dehngrenze des Werkstoffes von ca. 400 N/mm2 auf zum Beispiel ca. 900N/mm2 durch einen ca.25 bis 30 % betragenden Umformgrad erhöht werden. Eine gewünschte Dehngrenze kann also durch eine entsprechend große Kaltverformung leicht eingestellt werden, ohne daß, wie durch zahlreiche Versuche gefunden wurde, die Spannungsrißkorrosion sowie die Zähigkeit des Materials und die Ermüdung bei elastischer Formänderung, insbesondere Biegung, nachteilig beeinflußt werden.In order to increase the mechanical properties of the parts, in particular the 0.2% proof stress Rp0.2 of approx. 400 / N / mm 2 and to achieve lighter or safer designs, it can also be advantageous that the one formed from the alloy Part has a cold deformation of at least 5%, preferably greater than 15%. By means of cold forming, the 0.2% proof stress of the material can be increased from approx. 400 N / mm 2 to, for example, approx. 900N / mm 2 by an approx. 25 to 30% degree of deformation. A desired yield strength can thus be easily set by a correspondingly large cold deformation without, as has been found by numerous tests, the stress corrosion cracking and the toughness of the material and the fatigue with elastic change in shape, in particular bending, being adversely affected.
Überraschenderweise bleibt auch bei hohen Kaltumformgraden der austenitische amagnetische Materialzustand erhalten, es tritt also keine dem Fachmann von Manganstählen bekannte Bildung von Verformungsmartensit, der magnetisch ist, auf, wodurch sich der Werkstoff besonders gut für Uhrengehäuse und Uhrbänder eignet.Surprisingly, the austenitic amagnetic material state is retained even at high degrees of cold forming, so none of these occur to the person skilled in the art Manganese steels known formation of deformation martensite, which is magnetic, which makes the material particularly well suited for watch cases and watch straps.
Es hat sich gezeigt, daß der Werkstoff erfindungsgemäß besonders gut für Teile der Bekleidung, vorzugsweise der Unterbekleidung, wie beispielsweise Mieder, gegebenenfalls medizinische Stützmieder, verwendbar ist, weil bei guter Hautverträglichkeit eine leicht erreichbare hohe Materialfestigkeit eine geringe Wandstärke der Verschlußteile ermöglicht. Bei einer Verwendung der Legierung zur Fertigung von Modeschmuck und dgl. ist es von Vorteil, daß nach einer mechanischen, insbesondere nach einer chemischen Strukturierung, ein besonders effektvoller Glanz der Oberfläche erreicht werden kann, ohne die gute Hautverträglichkeit des Teiles zu verschlechtern. Die gute Hautverträglichkeit kann auch bei der Verwendung der Legierung für Gebrauchsgegenstände wie Brillenfassungen, Banknoteclips, Teile von Schreibgeräten, Haushaltsgegenständen, Schlüssel, Münzen und dgl. vorteilhaft genutzt werden.It has been shown that the material according to the invention can be used particularly well for parts of clothing, preferably underwear, such as corsets, possibly medical support corsets, because with good skin tolerance, an easily attainable high material strength enables a small wall thickness of the fastener parts. When the alloy is used to manufacture costume jewelry and the like, it is advantageous that after a mechanical, in particular after a chemical structuring, a particularly effective gloss of the surface can be achieved without the good skin tolerance of the part being impaired. The good skin tolerance can also be used advantageously when using the alloy for everyday objects such as spectacle frames, banknote clips, parts of writing implements, household objects, keys, coins and the like.
Claims (5)
- Use of a corrosion resistant alloy containing % by weightcarbon 1.0 maximumsilicon 1.0 maximummanganese 11.0 to 25.0chromium 10.0 to 20.0molybdenum up to 1.6nitrogen 0.05 to 0.55,optionally one or several of the elements vanadium, niobium, tantalum, tungsten, aluminium, titanium, copper, and boron in a concentration of no more than 2.0 % by weight, and iron and fabrication-related impurities as the remainder, which alloy has a nickel content of less than 0.5 % by weight, when in a quenched state, from a temperature of 1010°C to 1080°C for solution heat treatment and optionally in a cold-worked state to increase the proof stress and strength of the material, as an austenitic material for structured parts of clothing and/or for pieces of jewellery and utensils which are at least partially in contact with the skin of living beings, in particular human beings.
- Use of an alloy according to Claim 1, containing substantially % by weightcarbon 0.6 maximummanganese 18.0 to 21.5chromium 12.0 to 15.0nitrogen 0.2 to 0.4.
- Use of an alloy according to Claim 1 or 2 with a nickel content of no more than 0.25 % by weight.
- Use of an alloy according to any of Claims 1 to 3 with cold working of at least 5 %, preferably of greater than 15%.
- Use of an alloy according to any one of Claims 1 to 4 as a non-magnetic material for housings of watches and/or wristbands of watches.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT139392A AT397968B (en) | 1992-07-07 | 1992-07-07 | CORROSION-RESISTANT ALLOY FOR USE AS A MATERIAL FOR PARTS IN CONTACT WITH LIFE |
| CH1862/93A CH684979B5 (en) | 1992-07-07 | 1993-06-21 | Corrosion-resistant alloy for use as a material for in physical contact with stationary parts creatures. |
| EP93890161A EP0640695B1 (en) | 1992-07-07 | 1993-08-23 | Corrosion resistant alloy, useful as material for parts in contact with living beings |
| DE59302936T DE59302936D1 (en) | 1993-08-23 | 1993-08-23 | Corrosion-resistant alloy for use as a material for parts in contact with living beings |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT139392A AT397968B (en) | 1992-07-07 | 1992-07-07 | CORROSION-RESISTANT ALLOY FOR USE AS A MATERIAL FOR PARTS IN CONTACT WITH LIFE |
| EP93890161A EP0640695B1 (en) | 1992-07-07 | 1993-08-23 | Corrosion resistant alloy, useful as material for parts in contact with living beings |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0640695A1 EP0640695A1 (en) | 1995-03-01 |
| EP0640695B1 true EP0640695B1 (en) | 1996-06-12 |
Family
ID=25595730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP93890161A Revoked EP0640695B1 (en) | 1992-07-07 | 1993-08-23 | Corrosion resistant alloy, useful as material for parts in contact with living beings |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP0640695B1 (en) |
| AT (1) | AT397968B (en) |
| CH (1) | CH684979B5 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828122B (en) * | 2012-09-13 | 2015-01-07 | 浙江腾龙精线有限公司 | Method for manufacturing stainless steel wire for spectacle frame |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT401387B (en) * | 1994-06-29 | 1996-08-26 | Boehler Ybbstalwerke | CORROSION RESISTANT ALLOY AND METHOD FOR PRODUCING CORROSION RESISTANT CUTTERS |
| DE19607828C2 (en) * | 1995-04-15 | 2003-06-18 | Vsg En Und Schmiedetechnik Gmb | Process for producing an austenitic Cv-Mn steel |
| DE19542949A1 (en) * | 1995-11-17 | 1997-07-17 | Hilti Ag | Bolt for driving into hard materials |
| DE19758613C2 (en) * | 1997-04-22 | 2000-12-07 | Krupp Vdm Gmbh | High-strength and corrosion-resistant iron-manganese-chrome alloy |
| ES2150813T3 (en) * | 1997-04-29 | 2000-12-01 | Bohler Edelstahl Gmbh & Co Kg | USE OF A BIOCOMPATIBLE AND TOLERABLE ALLOY FOR THE SKIN. |
| EP0918099A1 (en) * | 1997-10-27 | 1999-05-26 | Stahlwerk Ergste Westig GmbH | Chrome-manganese steel alloy |
| EP0964071A1 (en) * | 1998-06-12 | 1999-12-15 | Asulab S.A. | Ferritic stainless steel and exterior cover part for a watch made with such a steel |
| CH694401A5 (en) | 1999-05-26 | 2004-12-31 | Basf Ag | Low-nickel, low-molybdenum, biocompatible, non-allergenic, corrosion-resistant austenitic steel. |
| AU5072400A (en) | 1999-06-24 | 2001-01-31 | Basf Aktiengesellschaft | Nickel-poor austenitic steel |
| GB9922757D0 (en) * | 1999-09-27 | 1999-11-24 | Heymark Metals Ltd | Improved steel composition |
| DE102009003598A1 (en) * | 2009-03-10 | 2010-09-16 | Max-Planck-Institut Für Eisenforschung GmbH | Corrosion-resistant austenitic steel |
| EP2617839A1 (en) * | 2012-01-18 | 2013-07-24 | MeKo Laserstrahl-Materialbearbeitungen e.K. | Nickel-free iron alloy for stents |
| EP3176653B1 (en) * | 2015-12-03 | 2018-09-26 | Cartier International AG | Clock component having a magnetic shielding function and comprising a steel alloy |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0277065A2 (en) * | 1987-01-23 | 1988-08-03 | S.M.F. International | Non-magnetic manganese-chromium steel and tubular element of a drilling column made from this steel |
| EP0422360A1 (en) * | 1989-10-12 | 1991-04-17 | Vereinigte Schmiedewerke Gmbh | Use of a nitrogen-bearing, fully austenitic steel for structural parts of railway vehicles |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB506905A (en) * | 1938-01-22 | 1939-06-06 | Krupp Ag | Improvements in the manufacture of parts of chemical apparatus and other articles from chromium-manganese steel alloys |
| FR1204510A (en) * | 1957-04-05 | 1960-01-26 | Crucible Steel Co America | Austenitic steels substantially free of nickel |
| FR75729E (en) * | 1959-05-15 | 1961-08-04 | Crucible Steel Co America | Austenitic steels substantially free of nickel |
| BE754614A (en) * | 1969-12-27 | 1971-01-18 | Nisshin Steel Co Ltd | AUSTENITIC STAINLESS STEELS |
| BG29797A1 (en) * | 1979-06-27 | 1981-02-16 | Rashev | Austenite corrosion resistant steel |
| CA1205659A (en) * | 1981-03-20 | 1986-06-10 | Masao Yamamoto | Corrosion-resistant non-magnetic steel and retaining ring for a generator made of it |
| US4946644A (en) * | 1989-03-03 | 1990-08-07 | Baltimore Specialty Steels Corporation | Austenitic stainless steel with improved castability |
| DE9215141U1 (en) * | 1992-11-06 | 1993-01-07 | Borchmann, Michael, Dr.med.dent., 4518 Bad Laer | Material for use in the jewellery industry for all types of jewellery |
-
1992
- 1992-07-07 AT AT139392A patent/AT397968B/en not_active IP Right Cessation
-
1993
- 1993-06-21 CH CH1862/93A patent/CH684979B5/en not_active IP Right Cessation
- 1993-08-23 EP EP93890161A patent/EP0640695B1/en not_active Revoked
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0277065A2 (en) * | 1987-01-23 | 1988-08-03 | S.M.F. International | Non-magnetic manganese-chromium steel and tubular element of a drilling column made from this steel |
| EP0422360A1 (en) * | 1989-10-12 | 1991-04-17 | Vereinigte Schmiedewerke Gmbh | Use of a nitrogen-bearing, fully austenitic steel for structural parts of railway vehicles |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102828122B (en) * | 2012-09-13 | 2015-01-07 | 浙江腾龙精线有限公司 | Method for manufacturing stainless steel wire for spectacle frame |
Also Published As
| Publication number | Publication date |
|---|---|
| ATA139392A (en) | 1993-12-15 |
| EP0640695A1 (en) | 1995-03-01 |
| CH684979GA3 (en) | 1995-02-28 |
| AT397968B (en) | 1994-08-25 |
| CH684979B5 (en) | 1995-08-31 |
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