EP3156510B1 - Nickel-free white cuzn alloy and use of same - Google Patents

Nickel-free white cuzn alloy and use of same Download PDF

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Publication number
EP3156510B1
EP3156510B1 EP16002090.5A EP16002090A EP3156510B1 EP 3156510 B1 EP3156510 B1 EP 3156510B1 EP 16002090 A EP16002090 A EP 16002090A EP 3156510 B1 EP3156510 B1 EP 3156510B1
Authority
EP
European Patent Office
Prior art keywords
nickel
alloy
free white
cuzn alloy
white cuzn
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP16002090.5A
Other languages
German (de)
French (fr)
Other versions
EP3156510A1 (en
Inventor
Norbert Gaag
Florian Seuss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Diehl Metall Stiftung and Co KG
Original Assignee
Diehl Metall Stiftung and Co KG
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Publication date
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Publication of EP3156510A1 publication Critical patent/EP3156510A1/en
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/05—Alloys based on copper with manganese as the next major constituent
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C9/00—Alloys based on copper
    • C22C9/04—Alloys based on copper with zinc as the next major constituent

Definitions

  • the invention relates to a nickel-free white CuZn alloy and a use of such a nickel-free white CuZn alloy.
  • Nickel-free white CuZn alloys are characterized by their white color and their antiallergenic properties. They are therefore used in particular for the production of zippers, metal buttons and the like .. It is exemplified on the EP 1 319 728 A1 directed.
  • the known nickel-free white CuZn alloy consists of the elements Cu, Zn and Mn.
  • the DE 100 16 525 A1 as well as the corresponding ones EP 1 045 042 A1 disclose a nickel-free white CuZn alloy which contains 0.5 to 4% Al to improve stress corrosion cracking resistance.
  • alloying elements may be included in a group of Si, Ti and Cr.
  • the DE 43 25 217 C2 discloses another nickel-free CuZn white alloy for making zippers. From this it is known to add to the alloy to improve the stress corrosion cracking resistance a content of 2% Al.
  • the known nickel-free white CuZn alloys do not have particularly good extrusion properties. There is a need to provide a nickel-free white CuZn alloy with improved extrusion properties.
  • the object of the invention is to satisfy this need.
  • the proposed alloy is characterized by improved extrusion properties. It is white and in particular has good antimicrobial properties. It is therefore particularly suitable for the production of fittings in buildings of the health sector, eg. As hospitals, nursing homes or medical practices, as well as in all public buildings with high public traffic.
  • the proposed alloy for example, for the production of fittings for doors, windows, z. As door and window handles, door panels and handrails are used.
  • the alloy may contain 0 to 0.2% Sn.
  • the alloy contains according to a further embodiment 0.03 to 0.1%, preferably 0.05 to 0.08%, Pb. It may further contain 1.5 to 2.3%, preferably 1.9 to 2.1%, Al. Furthermore, 12.8 to 14.7%, preferably 13.0 to 14.4%, Mn may be included.
  • the alloy advantageously consists of the abovementioned alloying elements.
  • the comparative alloy had the following composition: Cu: 65.6% al: 0.98% Mn: 14.5% Zn: rest
  • the alloy according to the invention had the following composition: Cu: 64.7% al: 2.0% Mn: 13.2% Pb: 0.06% Fe: 0.08% Zn: rest
  • the Fig. 1 shows the result of compression tests of 600 ° C.
  • the alloy of the invention can be significantly better deformed.
  • a "maximum possible deformation" resulting from exerting the maximum force of the press used to perform the compression tests is 53.5% for the comparative alloy and 71.5% for the alloy according to the invention.
  • Fig. 2 shows the result of compression tests at 700 ° C.
  • the comparative alloy shows a clear cracking already from a degree of deformation of 60%.
  • the alloy according to the invention can be deformed without cracks up to a maximum degree of deformation of 74.5%.
  • the alloy according to the invention is characterized by improved deformation properties and thus also by improved extrusion properties.
  • the advantageous properties of the alloy are attributed to the fact that the alloy contains 0.01 to 0.15% Pb and 0.01 to 0.2% Fe compared to corresponding prior art alloys.

Description

Die Erfindung betrifft eine nickelfreie weiße CuZn-Legierung sowie eine Verwendung einer solchen nickelfreien weißen CuZn-Legierung.The invention relates to a nickel-free white CuZn alloy and a use of such a nickel-free white CuZn alloy.

Nickelfreie weiße CuZn-Legierungen zeichnen sich durch ihre weiße Farbe sowie ihre antiallergenen Eigenschaften aus. Sie werden deshalb insbesondere zur Herstellung von Reißverschlüssen, Metallknöpfen und dgl. verwendet. Es wird dazu beispielhaft auf die EP 1 319 728 A1 verwiesen. Die daraus bekannte nickelfreie weiße CuZn-Legierung besteht aus den Elementen Cu, Zn und Mn.Nickel-free white CuZn alloys are characterized by their white color and their antiallergenic properties. They are therefore used in particular for the production of zippers, metal buttons and the like .. It is exemplified on the EP 1 319 728 A1 directed. The known nickel-free white CuZn alloy consists of the elements Cu, Zn and Mn.

Die DE 100 16 525 A1 sowie die dazu korrespondierende EP 1 045 042 A1 offenbaren eine nickelfreie weiße CuZn-Legierung, welche zur Verbesserung der Spannungsrisskorrosionsbeständigkeit 0,5 bis 4% Al enthält. Außerdem können Legierungselemente aus einer Gruppe aus Si, Ti und Cr enthalten sein.The DE 100 16 525 A1 as well as the corresponding ones EP 1 045 042 A1 disclose a nickel-free white CuZn alloy which contains 0.5 to 4% Al to improve stress corrosion cracking resistance. In addition, alloying elements may be included in a group of Si, Ti and Cr.

Die DE 43 25 217 C2 offenbart eine weitere nickelfreie weiße CuZn-Legierung zur Herstellung von Reißverschlüssen. Daraus ist es bekannt, der Legierung zur Verbesserung der Spannungsrisskorrosionsbeständigkeit einen Gehalt von 2% Al zuzusetzen.The DE 43 25 217 C2 discloses another nickel-free CuZn white alloy for making zippers. From this it is known to add to the alloy to improve the stress corrosion cracking resistance a content of 2% Al.

Die bekannten nickelfreien weißen CuZn-Legierungen weisen keine besonders guten Strangpresseigenschaften auf. Es besteht ein Bedarf an der Bereitstellung einer nickelfreien weißen CuZn-Legierung mit verbesserten Strangpresseigenschaften.The known nickel-free white CuZn alloys do not have particularly good extrusion properties. There is a need to provide a nickel-free white CuZn alloy with improved extrusion properties.

Aufgabe der Erfindung ist es, diesen Bedarf zu befriedigen.The object of the invention is to satisfy this need.

Zur Lösung der Aufgabe wird eine nickelfreie weiße CuZn-Legierung mit den Merkmalen des Patentanspruchs 1 vorgeschlagen. Zweckmäßige Ausgestaltungen der Erfindung ergeben sich aus den Merkmalen der Patentansprüche 2 bis 8. Nach weiterer Maßgabe der Erfindung wird im Patentanspruch 9 eine Verwendung der nickelfreien weißen CuZn-Legierung vorgeschlagen.To solve the problem, a nickel-free white CuZn alloy with the features of claim 1 is proposed. Advantageous embodiments of the invention will become apparent from the features of claims 2 to 8. According to further specification of the invention, a use of nickel-free white CuZn alloy is proposed in claim 9.

Nach Maßgabe der Erfindung wird eine nickelfreie weiße CuZn-Legierung (im Weiteren: Legierung), mit folgenden Legierungselementen vorgeschlagen:

  • 63,0 bis 67,0% Cu,
  • 0,01 bis 0,15% Pb,
  • 0,01 bis 0,2% Fe,
  • 1,3 bis 2,5% Al,
  • 12,0 bis 15,0% Mn,
  • Rest Zn sowie
  • unvermeidbare Verunreinigungen.
According to the invention, a nickel-free white CuZn alloy (hereinafter: alloy) is proposed with the following alloying elements:
  • 63.0 to 67.0% Cu,
  • 0.01 to 0.15% Pb,
  • 0.01 to 0.2% Fe,
  • 1.3 to 2.5% Al,
  • 12.0 to 15.0% Mn,
  • Rest Zn as well
  • unavoidable impurities.

Die vorgeschlagene Legierung zeichnet sich durch verbesserte Strangpresseigenschaften aus. Sie ist weiß und weist insbesondere gute antimikrobielle Eigenschaften auf. Sie eignet sich deshalb insbesondere zur Herstellung von Beschlägen in Gebäuden des Gesundheitsbereichs, z. B. Krankenhäuser, Pflegeheime oder Arztpraxen, sowie in allen öffentlichen Gebäuden mit hohem Publikumsverkehr. Die vorgeschlagene Legierung kann beispielsweise zur Herstellung von Beschlägen für Türen, Fenster, z. B. Tür- und Fenstergriffe, Türplatten sowie von Handläufen verwendet werden.The proposed alloy is characterized by improved extrusion properties. It is white and in particular has good antimicrobial properties. It is therefore particularly suitable for the production of fittings in buildings of the health sector, eg. As hospitals, nursing homes or medical practices, as well as in all public buildings with high public traffic. The proposed alloy, for example, for the production of fittings for doors, windows, z. As door and window handles, door panels and handrails are used.

Die Legierung kann 0 bis 0,2% Sn enthalten.The alloy may contain 0 to 0.2% Sn.

Nach einer vorteilhaften Ausgestaltung sind in der Legierung 63,5 bis 66,0%, vorzugsweise 64,0 bis 65,5%, Cu enthalten.According to an advantageous embodiment 63.5 to 66.0%, preferably 64.0 to 65.5%, Cu contained in the alloy.

Die Legierung enthält nach einer weiteren Ausgestaltung 0,03 bis 0,1%, vorzugsweise 0,05 bis 0,08%, Pb. Sie kann ferner 1,5 bis 2,3%, vorzugsweise 1,9 bis 2,1%, Al enthalten. Ferner können 12,8 bis 14,7%, vorzugsweise 13,0 bis 14,4%, Mn enthalten sein.The alloy contains according to a further embodiment 0.03 to 0.1%, preferably 0.05 to 0.08%, Pb. It may further contain 1.5 to 2.3%, preferably 1.9 to 2.1%, Al. Furthermore, 12.8 to 14.7%, preferably 13.0 to 14.4%, Mn may be included.

Die Legierung besteht vorteilhafterweise aus den vorgenannten Legierungselementen.The alloy advantageously consists of the abovementioned alloying elements.

Unter "%" werden im Sinne der Erfindung "Gew.%" verstanden."%" In the context of the invention "wt.%" Understood.

Beispiel:Example:

Legierung, bestehend aus den folgenden Legierungselementen:

  • 64,7% Cu,
  • 0,06% Pb,
  • 0,08% Fe,
  • 0,05% Sn,
  • 2,0% Al,
  • 13,2% Mn,
  • Rest Zn sowie
  • unvermeidbare Verunreinigungen.
Alloy consisting of the following alloying elements:
  • 64.7% Cu,
  • 0.06% Pb,
  • 0.08% Fe,
  • 0.05% Sn,
  • 2.0% Al,
  • 13.2% Mn,
  • Rest Zn as well
  • unavoidable impurities.

Die verbesserten Strangpresseigenschaften der erfindungsgemäßen Legierung werden aus den anliegenden Zeichnungen deutlich. Es zeigen:

Fig. 1
das Ergebnis von Stauchversuchen bei 600 °C und
Fig. 2
das Ergebnis von Stauchversuchen bei 700 °C.
The improved extrusion properties of the alloy according to the invention will be apparent from the accompanying drawings. Show it:
Fig. 1
the result of compression tests at 600 ° C and
Fig. 2
the result of compression tests at 700 ° C.

Die zur Durchführung der in den Fig. 1 und 2 gezeigten Stauchversuche verwendeten Proben hatten folgende Abmessungen: Probendurchmesser: 10 mm Probenhöhe: 20 mm To carry out in the Fig. 1 and 2 The samples used had the following dimensions: Sample diameter: 10 mm Specimen height: 20 mm

Die Vergleichslegierung hatte folgende Zusammensetzung: Cu: 65,6% Al: 0,98% Mn: 14,5% Zn: Rest The comparative alloy had the following composition: Cu: 65.6% al: 0.98% Mn: 14.5% Zn: rest

Die erfindungsgemäße Legierung hatte folgende Zusammensetzung: Cu: 64,7% Al: 2,0% Mn: 13,2% Pb: 0,06% Fe: 0,08% Zn: Rest The alloy according to the invention had the following composition: Cu: 64.7% al: 2.0% Mn: 13.2% Pb: 0.06% Fe: 0.08% Zn: rest

Die Fig. 1 zeigt das Ergebnis von Stauchversuchen von 600 °C. Die erfindungsgemäße Legierung lässt sich deutlich besser verformen. Eine bei Ausübung der Maximalkraft der zur Durchführung der Stauchversuche verwendeten Presse sich ergebende "maximale mögliche Verformung" liegt bei der Vergleichslegierung bei 53,5%, bei der erfindungsgemäßen Legierung bei 71,5%.The Fig. 1 shows the result of compression tests of 600 ° C. The alloy of the invention can be significantly better deformed. A "maximum possible deformation" resulting from exerting the maximum force of the press used to perform the compression tests is 53.5% for the comparative alloy and 71.5% for the alloy according to the invention.

Fig. 2 zeigt das Ergebnis von Stauchversuchen bei 700 °C. Die Vergleichslegierung zeigt bereits ab einem Verformungsgrad von 60% eine deutliche Rissbildung. Die erfindungsgemäße Legierung kann dagegen bis zu einem maximalen Verformungsgrad von 74,5% rissfrei verformt werden. Fig. 2 shows the result of compression tests at 700 ° C. The comparative alloy shows a clear cracking already from a degree of deformation of 60%. In contrast, the alloy according to the invention can be deformed without cracks up to a maximum degree of deformation of 74.5%.

Wie aus den Fig. 1 und 2 ersichtlich ist, zeichnet sich die erfindungsgemäße Legierung durch verbesserte Verformungseigenschaften und damit auch durch verbesserte Strangpresseigenschaften aus.Like from the Fig. 1 and 2 is apparent, the alloy according to the invention is characterized by improved deformation properties and thus also by improved extrusion properties.

Die vorteilhaften Eigenschaften der Legierung werden insbesondere darauf zurückgeführt, dass die Legierung im Vergleich zu entsprechenden Legierungen nach dem Stand der Technik 0,01 bis 0,15% Pb sowie 0,01 bis 0,2% Fe enthält.In particular, the advantageous properties of the alloy are attributed to the fact that the alloy contains 0.01 to 0.15% Pb and 0.01 to 0.2% Fe compared to corresponding prior art alloys.

Claims (6)

  1. Nickel-free white CuZn alloy comprising the following alloying elements:
    - from 63.0 to 67.0% of Cu,
    - from 0.01 to 0.15% of Pb,
    - from 0.01 to 0.2% of Fe,
    - from 1.3 to 2.5% of Al,
    - from 12.0 to 15.0% of Mn,
    - optionally from 0 to 0.2% of Sn,
    - balance Zn and
    - unavoidable impurities.
  2. Nickel-free white CuZn alloy according to any of the preceding claims, wherein from 63.5 to 66.0%, preferably from 64.0 to 65.5%, of Cu is present.
  3. Nickel-free white CuZn alloy according to any of the preceding claims, wherein from 0.03 to 0.1%, preferably from 0.05 to 0.08%, of Pb is present.
  4. Nickel-free white CuZn alloy according to any of the preceding claims, wherein from 1.5 to 2.3%, preferably from 1.9 to 2.1%, of Al is present.
  5. Nickel-free white CuZn alloy according to any of the preceding claims, wherein from 12.8 to 14.7%, preferably from 13.0 to 14.4%, of Mn is present.
  6. Use of the nickel-free white CuZn alloy according to any of the preceding claims for producing fittings for doors, windows or furniture and also for producing handrails.
EP16002090.5A 2015-10-09 2016-09-27 Nickel-free white cuzn alloy and use of same Not-in-force EP3156510B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015013201.6A DE102015013201B4 (en) 2015-10-09 2015-10-09 Use of a nickel-free white CuZn alloy

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Publication Number Publication Date
EP3156510A1 EP3156510A1 (en) 2017-04-19
EP3156510B1 true EP3156510B1 (en) 2018-06-13

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US (1) US10041149B2 (en)
EP (1) EP3156510B1 (en)
JP (1) JP2017133094A (en)
KR (1) KR20170042474A (en)
DE (1) DE102015013201B4 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018007045A1 (en) * 2018-09-06 2020-03-12 Diehl Metall Stiftung & Co. Kg Use of a brass alloy for the manufacture of components for heating construction

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1194153B (en) 1958-10-18 1965-06-03 Dr Eugen Vaders Use of a copper-manganese-zinc alloy as a material for machine parts exposed to sliding stress
US3778237A (en) * 1972-03-29 1973-12-11 Olin Corp Plated copper base alloy article
JPS5917175B2 (en) * 1978-04-06 1984-04-19 三菱マテリアル株式会社 White copper alloy with excellent corrosion resistance for architectural and decorative crafts
DE4313308C1 (en) 1993-04-23 1994-04-07 Wieland Werke Ag Nickel-free copper zinc alloy for producing glasses, jewellery, cutlery, etc. - comprises manganese, aluminium, silicon, iron and lead
DE4325217C2 (en) 1993-07-28 1995-05-11 Diehl Gmbh & Co Use of a copper alloy for zippers
US5582281A (en) 1994-07-19 1996-12-10 Chuetsu Metal Works Co., Ltd. Method of connecting a sliding member to a synchronizer ring
JP3750897B2 (en) 1999-04-16 2006-03-01 Ｙｋｋ株式会社 Nickel-free white copper alloy
JP2000303129A (en) 1999-04-16 2000-10-31 Ykk Corp Nickel-free white copper alloy
JP3713233B2 (en) 2001-12-14 2005-11-09 Ｙｋｋ株式会社 Copper alloy for slide fasteners with excellent continuous castability
EP1731624A4 (en) 2004-03-12 2007-06-13 Sumitomo Metal Ind Copper alloy and method for production thereof
DE102004058318B4 (en) * 2004-12-02 2006-09-28 Diehl Metall Stiftung & Co.Kg Use of a copper-zinc alloy
DE102006009396B4 (en) * 2006-03-01 2012-08-16 Diehl Metall Stiftung & Co. Kg Brass alloy and synchronizer ring
US20100061884A1 (en) * 2008-09-10 2010-03-11 Pmx Industries Inc. White-colored copper alloy with reduced nickel content
DE102013004383B4 (en) * 2013-03-12 2015-06-03 Diehl Metall Stiftung & Co. Kg Use of a copper-zinc alloy

Also Published As

Publication number Publication date
US10041149B2 (en) 2018-08-07
DE102015013201A1 (en) 2017-04-13
JP2017133094A (en) 2017-08-03
EP3156510A1 (en) 2017-04-19
US20170101701A1 (en) 2017-04-13
DE102015013201B4 (en) 2018-03-29
KR20170042474A (en) 2017-04-19

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