EN ISO 2931:2018
(Main)Anodizing of aluminium and its alloys - Assessment of quality of sealed anodic oxidation coatings by measurement of admittance (ISO 2931:2017)
Anodizing of aluminium and its alloys - Assessment of quality of sealed anodic oxidation coatings by measurement of admittance (ISO 2931:2017)
ISO 2931:2017 specifies a method for assessing the quality of sealed anodic oxidation coatings on aluminium and its alloys by measurement of the admittance.
The method is applicable to anodic oxidation coatings sealed in an aqueous medium.
NOTE 1 Results obtained from anodic oxidation coatings sealed by different methods, e.g. hydrothermal sealing and cold sealing, are not necessarily comparable.
NOTE 2 Results obtained from anodic oxidation coatings on alloys containing more than 2 % silicon or 5 % manganese or 3 % magnesium are not comparable with results obtained from anodic oxidation coatings on more dilute alloys.
The method is suitable for use as a production-control test and as an acceptance test where there is agreement between the anodizer and the customer.
Any type of anodized component can be tested by the method described, provided that there is a sufficient area (a circle of diameter about 20 mm) and that the film thickness is greater than 3 µm.
Anodisieren von Aluminium und Aluminiumlegierungen - Prüfung der Qualität von verdichteten, anodisch erzeugten Oxidschichten durch Messung des Scheinleitwertes (ISO 2931:2017)
Dieses Dokument legt ein Verfahren zur Prüfung der Qualität von verdichteten, anodisch erzeugten Oxidschichten auf Aluminium und Aluminiumlegierungen durch Messung des Scheinleitwertes fest.
Das Verfahren ist auf anodisch erzeugte Oxidschichten anwendbar, die in einer wässrigen Lösung verdichtet wurden.
ANMERKUNG 1 Ergebnisse, die für anodisch erzeugte Oxidschichten erzielt wurden, welche mit unterschiedlichen Verfahren (z. B. hydrothermales Verdichten und Kaltimprägnieren) verdichtet wurden, sind nicht zwangsweise vergleichbar.
ANMERKUNG 2 Ergebnisse, die für anodisch erzeugte Oxidschichten auf Legierungen erzielt wurden, die mehr als 2 % Silicon oder 5 % Mangan oder 3 % Magnesium enthalten, sind nicht vergleichbar mit den Ergebnissen, die für anodisch erzeugte Oxidschicht auf stärker verdünnten Legierungen erzielt wurden.
Das Verfahren ist zur innerbetrieblichen Produktionsüberwachung geeignet und nach Vereinbarung zwischen dem das Anodisationsverfahren durchführenden Unternehmen und dem Besteller auch für Abnahmeprüfungen anwendbar.
Alle Arten von anodisierten Gegenständen können nach dem beschriebenen Verfahren geprüft werden, vorausgesetzt es gibt eine ausreichend große Messfläche (Kreis mit etwa 20 mm Durchmesser) und die Schichtdicke ist größer als 3 μm.
Anodisation de l'aluminium et de ses alliages - Évaluation de la qualité des couches anodiques colmatées par mesurage de l'admittance (ISO 2931:2017)
ISO 2931:2017 spécifie une méthode d'évaluation de la qualité des couches anodiques colmatées formées sur de l'aluminium ou des alliages d'aluminium, par mesurage de l'admittance.
Cette méthode est applicable aux couches anodiques colmatées en milieu aqueux.
NOTE 1 Les résultats obtenus sur des couches anodiques colmatées par des méthodes différentes, par exemple par colmatage hydrothermique ou par colmatage à froid, ne sont pas nécessairement comparables.
NOTE 2 Les résultats obtenus sur des couches anodiques formées sur des alliages contenant plus de 2 % de silicium ou plus de 5 % de manganèse ou plus de 3 % de magnésium ne sont pas comparables aux résultats obtenus sur des couches anodiques formées sur des alliages dans lesquels ces concentrations sont inférieures.
Cette méthode peut être utilisée pour les contrôles de la production et pour les contrôles de réception lorsqu'un accord a été conclu entre l'anodiseur et le client.
Des produits anodisés de tout type peuvent être soumis à essai selon la méthode décrite pour autant que leur surface soit suffisante (un cercle d'environ 20 mm de diamètre) et que l'épaisseur de la couche soit supérieure à 3 μm.
Anodizacija aluminija in njegovih zlitin - Ocenjevanje kakovosti tesnjenih anodno oksidiranih prevlek z meritvijo admitance (ISO 2931:2017)
Ta dokument določa metodo za ocenjevanje kakovosti tesnjenih anodno oksidiranih prevlek na aluminiju in aluminijevih zlitinah z meritvijo admitance.
Metoda se uporablja za anodno oksidirane prevleke, zatesnjene v vodnem mediju.
OPOMBA 1: Rezultati, pridobljeni iz anodno oksidiranih prevlek, zatesnjenih z različnimi metodami, kot sta hidrotermalna
in hladna zatesnitev, niso nujno primerljivi.
OPOMBA 2: Rezultati, pridobljeni iz anodno oksidiranih prevlek na zlitinah, ki vsebujejo več kot 2 % silicija ali 5 %
mangana ali 3 % magnezija, niso primerljivi z rezultati, pridobljenimi iz anodno oksidiranih prevlek na bolj razredčenih zlitinah.
Metoda je primerna kot kontrolni preskus proizvoda in kot preskus sprejemljivosti, če je tak dogovor med izvajalcem eloksacije in stranko.
Vse vrste anodiziranih komponent je mogoče preskusiti z opisano metodo pod pogojem, da je
površina dovolj velika (krog s premerom približno 20 mm) in da je debelina premaza najmanj 3 μm.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2018
1DGRPHãþD
SIST EN ISO 2931:2010
Anodizacija aluminija in njegovih zlitin - Ocenjevanje kakovosti tesnjenih anodno
oksidiranih prevlek z meritvijo admitance (ISO 2931:2017)
Anodizing of aluminium and its alloys - Assessment of quality of sealed anodic oxidation
coatings by measurement of admittance (ISO 2931:2017)
Anodisieren von Aluminium und Aluminiumlegierungen - Prüfung der Qualität von
verdichteten, anodisch erzeugten Oxidschichten durch Messung des Scheinleitwertes
(ISO 2931:2017)
Anodisation de l'aluminium et de ses alliages - Évaluation de la qualité des couches
anodiques colmatées par mesurage de l'admittance (ISO 2931:2017)
Ta slovenski standard je istoveten z: EN ISO 2931:2018
ICS:
25.220.20 Površinska obdelava Surface treatment
77.120.10 Aluminij in aluminijeve zlitine Aluminium and aluminium
alloys
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 2931
EUROPEAN STANDARD
NORME EUROPÉENNE
February 2018
EUROPÄISCHE NORM
ICS 25.220.20 Supersedes EN ISO 2931:2010
English Version
Anodizing of aluminium and its alloys - Assessment of
quality of sealed anodic oxidation coatings by
measurement of admittance (ISO 2931:2017)
Anodisation de l'aluminium et de ses alliages - Anodisieren von Aluminium und
Évaluation de la qualité des couches anodiques Aluminiumlegierungen - Prüfung der Qualität von
colmatées par mesurage de l'admittance (ISO verdichteten, anodisch erzeugten Oxidschichten durch
2931:2017) Messung des Scheinleitwertes (ISO 2931:2017)
This European Standard was approved by CEN on 1 December 2017.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 2931:2018 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 2931:2018) has been prepared by Technical Committee ISO/TC 79 "Light
metals and their alloys" in collaboration with Technical Committee CEN/TC 132 “Aluminium and
aluminium alloys”, the secretariat of which is held by AFNOR.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by August 2018, and conflicting national standards shall
be withdrawn at the latest by August 2018.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 2931:2010.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 2931:2017 has been approved by CEN as EN ISO 2931:2018 without any modification.
INTERNATIONAL ISO
STANDARD 2931
Fourth edition
2017-11
Anodizing of aluminium and its
alloys — Assessment of quality of
sealed anodic oxidation coatings by
measurement of admittance
Anodisation de l'aluminium et de ses alliages — Évaluation de
la qualité des couches anodiques colmatées par mesurage de
l'admittance
Reference number
ISO 2931:2017(E)
©
ISO 2017
ISO 2931:2017(E)
© ISO 2017, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
written permission. Permission can be requested from either ISO at the address below or ISO’s member body in the country of
the requester.
ISO copyright office
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Tel. +41 22 749 01 11
Fax +41 22 749 09 47
copyright@iso.org
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ii © ISO 2017 – All rights reserved
ISO 2931:2017(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Apparatus and materials. 2
6 Test specimen . 3
6.1 Sampling . 3
6.2 Treatment before testing . 3
7 Procedure. 3
8 Expression of results . 4
9 Test report . 4
Bibliography . 5
ISO 2931:2017(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see the following
URL: www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 79, Light metals and their alloys,
Subcommittee SC 2, Organic and anodic oxidation coatings on aluminium.
This fourth edition cancels and replaces the third edition (ISO 2931:2010), which has been technically
revised.
The main changes compared to the previous edition are as follows:
— the content of Clause 6, now entitled “Test specimen”, has been revised.
iv © ISO 2017 – All rights reserved
ISO 2931:2017(E)
Introduction
The test described in this document is intended to give a quick, non-destructive assessment of the
quality of sealed anodic oxidation coatings and is very suitable for routine production control. It is
carried out following sealing and before any other supplementary process is undertaken, for example,
oiling, waxing or lacquering.
The correlation of the results obtained with those of other tests that can assess sealing quality such as
that of ISO 2143 can be affected by the presence of sealing additives or contaminants such as silicate
or phosphate. For this reason, the quality is checked from time to time by one of the reference acid-
dissolution methods specified in ISO 3210.
The pre-treatment, the anodizing process, the colouring process used and the alloy can all have an
effect on admittance readings.
INTERNATIONAL STANDARD ISO 2931:2017(E)
Anodizing of aluminium and its alloys — Assessment
of quality of sealed anodic oxidation coatings by
measurement of admittance
1 Scope
This document specifies a method for assessing the quality of sealed anodic oxidation coatings on
aluminium and its alloys by measurement of the admittance.
The method is applicable to anodic oxidation coatings sealed in an aqueous medium.
NOTE 1 Results obtained from anodic oxidation coatings sealed by different methods, e.g. hydrothermal
sealing and cold sealing, are not necessarily comparable.
NOTE 2 Results obtained from anodic oxidation coatings on alloys containing more than 2 % silicon or 5 %
manganese or 3 % magnesium are not comparable with results obtained from anodic oxidation coatings on more
dilute alloys.
The method is suitable for use as a production-control test and as an acceptance test where there is
agreement between the anodizer and the customer.
Any type of anodized component can be tested by the method described, provided that there is a
sufficient area (a circle of diameter about 20 mm) and that the film thickness is greater than 3 µm.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
ISO 2360, Non-conductive coatings on non-magnetic electrically conductive base metals — Measurement
of coating thickness — Amplitude-sensitive eddy-current method
ISO 7583, Anodizing of aluminium and its alloys — Terms and definitions
3 Terms and definitions
For the purpo
...
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