SIST EN 12373-7:2004

Aluminium and aluminium alloys - Anodizing - Part 7: Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in phosphoric acid/chromic acid solution with prior acid treatment

This European Standard specifies a method of assessing the quality of sealed anodic oxidation coatings on aluminium and its alloys by measurement of the loss of mass after immersion in phosphoric acid/chromic acid solution with prior acid treatment. A related standard (EN 12373-6 )) describes the same method used without prior acid treatment.
The method is particularly applicable to anodic oxidation coatings intended for architectural purposes. For less severe applications, the method described in EN 12373-61) may be more suitable.
The method is not applicable to :
3 hard-type anodic oxidation coatings which normally are not sealed ;
3 anodic oxidation coatings that have been sealed only in dichromate solutions ;
3 anodic oxidation coatings produced in chromic acid solutions ;
3 anodic oxidation coatings that have undergone a treatment to render them hydrophobic.
The method is destructive and can serve as a reference method in case of doubt or dispute regarding the results of the test for loss of absorptive power (EN 12373-41)), or the measurement of admittance (EN 12373-51)).

Aluminium und Aluminiumlegierungen - Anodisieren - Teil 7: Prüfung der Qualität von verdichteten, anodisch erzeugten Oxidschichten durch Bestimmung des Masseverlustes nach Eintauchen in Chromphosphorsäure-Lösung mit vorheriger Säurebehandlung

Diese Europäische Norm legt ein Verfahren zur Prüfung der Qualität verdichteter, anodisch erzeugter Oxidschichten auf Aluminium und Aluminiumlegierungen fest, indem der Masseverlust nach Eintauchen in eine Chromphosphorsäure-Lösung mit vorheriger Säurebehandlung gemessen wird. Eine weitere Norm (EN 12373-6 )) beschreibt das gleiche Verfahren ohne vorherige Säurebehandlung.
Das Verfahren ist besonders auf anodisch aufgebrachte Oxidschichten anwendbar, die für Architekturanwen-dungen vorgesehen sind. Für weniger stark belastete Anwendungen ist das in EN 12373-61) beschriebene Verfahren geeigneter.
Das Verfahren ist nicht anwendbar auf:
3 Oxidschichten, die nach Hartanodisationsverfahren erzeugt wurden und üblicherweise nicht verdichtet werden;
3 anodisch erzeugte Oxidschichten, die nur in Dichromat-Lösung verdichtet wurden;
3 anodisch erzeugte Oxidschichten, die in Chromsäure erzeugt wurden;
3 anodisch erzeugte Oxidschichten, die einer hydrophobierenden Behandlung unterzogen wurden.
Das Verfahren ist nicht zerstörungsfrei und kann in Zweifels- oder Streitfällen als Schiedsverfahren für die Ergeb-nisse der Prüfung der Anfärbbarkeit (EN 12373-41)) oder der Messung des Scheinleitwertes angewandt werden (EN 12373-51)).

Aluminium et alliages d'aluminium - Anodisation - Partie 7: Evaluation de la qualité des couches anodiques colmatées par mesurage de la perte de masse apres immersion en solution phosphochromique avec traitement acide préalable

La présente Norme européenne spécifie une méthode d'évaluation de la qualité des couches anodiques colmatées sur aluminium et alliages d'aluminium par mesurage de la perte de masse apres immersion en solution phosphochromique avec traitement acide préalable. Une norme connexe (EN 12373-6) ) décrit la meme méthode sans traitement acide préalable.
La méthode s'applique en particulier aux couches anodiques utilisées a des fins architecturales. Pour des applications moins critiques, la méthode décrite dans le EN 12373-61) peut se révéler plus adaptée.
La méthode n'est pas applicable :
3 aux couches anodiques dures, qui, normalement, ne sont pas colmatées ;
3 aux couches anodiques qui ont été colmatées uniquement en solutions bichromatées ;
3 aux couches anodiques produites dans des solutions d'acide chromique ;
3 aux couches anodiques qui ont subi un traitement d'imperméabilisation.
La méthode est destructive et peut servir de méthode de référence en cas de doute ou de litige sur les résultats des essais de perte de pouvoir absorbant (voir EN 12373-4)1) ou de mesurage de l'admittance (voir EN 12373-5)1).

Aluminij in aluminijeve zlitine – Anodna oksidacija – 7. del: Ocenitev kakovosti zatesnjenih anodno oksidiranih plasti z izgubo mase po raztapljanju preskušancev v vodni raztopini fosforne in kromove kisline, predhodno obdelanih s kislino

General Information

• Status: Withdrawn
• Publication Date: 31-Dec-2003
• Withdrawal Date: 31-Aug-2010
• ICS: 25.220.20 - Surface treatment
• ICS: 77.120.10 - Aluminium and aluminium alloys
• Technical Committee: INEK - Nonferrous metals
• Current Stage: 9900 - Withdrawal (Adopted Project)
• Start Date: 01-Sep-2010
• Due Date: 24-Sep-2010
• Completion Date: 01-Sep-2010
• Ref Project: EN 12373-7:2002 - Aluminium and aluminium alloys - Anodizing - Part 7: Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in phosphoric acid/chromic acid solution with prior acid treatment

Relations

• Replaced By: SIST EN ISO 3210:2010 - Anodizing of aluminium and its alloys - Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in phosphoric acid/chromic acid solution (ISO 3210:2010)
• Effective Date: 01-Oct-2010
• Replaced By: SIST EN ISO 3210:2010 - Anodizing of aluminium and its alloys - Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in phosphoric acid/chromic acid solution (ISO 3210:2010)
• Effective Date: 08-Jun-2022
• Replaces: SIST EN 12373-7:1999 - Aluminium and aluminium alloys - Anodizing - Part 7: Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in phosphoric acid/chromic acid solution with prior acid treatment
• Effective Date: 01-Dec-2004

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aluminij in aluminijeve zlitine – Anodna oksidacija – 7. del: Ocenitev kakovosti zatesnjenih anodno oksidiranih plasti z izgubo mase po raztapljanju preskušancev v vodni raztopini fosforne in kromove kisline, predhodno obdelanih s kislinoAluminium und Aluminiumlegierungen - Anodisieren - Teil 7: Prüfung der Qualität von verdichteten, anodisch erzeugten Oxidschichten durch Bestimmung des Masseverlustes nach Eintauchen in Chromphosphorsäure-Lösung mit vorheriger SäurebehandlungAluminium et alliages d'aluminium - Anodisation - Partie 7: Evaluation de la qualité des couches anodiques colmatées par mesurage de la perte de masse apres immersion en solution phosphochromique avec traitement acide préalableAluminium and aluminium alloys - Anodizing - Part 7: Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass after immersion in phosphoric acid/chromic acid solution with prior acid treatment77.120.10Aluminij in aluminijeve zlitineAluminium and aluminium alloys25.220.20Površinska obdelavaSurface treatmentICS:Ta slovenski standard je istoveten z:EN 12373-7:2002SIST EN 12373-7:2004en01-januar-2004SIST EN 12373-7:2004SLOVENSKI
STANDARDSIST EN 12373-7:19991DGRPHãþD



SIST EN 12373-7:2004



EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12373-7August 2002ICS 25.220.20; 77.120.10Supersedes EN 12373-7:1998English versionAluminium and aluminium alloys - Anodizing - Part 7:Assessment of quality of sealed anodic oxidation coatings bymeasurement of the loss of mass after immersion in phosphoricacid/chromic acid solution with prior acid treatmentAluminium et alliages d'aluminium - Anodisation - Partie 7:Evaluation de la qualité des couches anodiques colmatéespar mesurage de la perte de masse après immersion ensolution phosphochromique avec traitement acidepréalableAluminium und Aluminiumlegierungen - Anodisieren - Teil7: Prüfung der Qualität von verdichteten, anodischerzeugten Oxidschichten durch Bestimmung desMasseverlustes nach Eintauchen in Chromphosphorsäure-Lösung mit vorheriger SäurebehandlungThis European Standard was approved by CEN on 10 May 2002.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2002 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12373-7:2002 ESIST EN 12373-7:2004



EN 12373-7:2002 (E)2ContentspageForeword.31Scope.52Principle.53Reagents.53.1Predip.53.2Test solution.54Apparatus.55Preparation of test piece.66Procedure.67Expression of results.68Test report.7Annex A (normative)
Method for the drying of samples.8SIST EN 12373-7:2004



EN 12373-7:2002 (E)3ForewordThis document EN 12373-7:2002 has been prepared by Technical Committee CEN/TC 132 "Aluminium andaluminium 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 orby endorsement, at the latest by February 2003, and conflicting national standards shall be withdrawn at the latestby February 2003.This document supersedes EN 12373-7:1998.The following technical change has been made:¾ Subclause "3.1 Predip" has been revised.In this standard, annex A is normative.EN 12373, Aluminium and aluminium alloys – Anodizing, comprises the following parts:¾ Part 1: Method for specifying decorative and protective anodic oxidation coatings on aluminium.¾ Part 2: Determination of mass per unit area (surface density) of anodic oxidation coatings – Gravimetricmethod.¾ Part 3: Determination of thickness of anodic oxidation coatings – Non-destructive measurement by split beammicroscope.¾ Part 4: Estimation of loss of absorptive power of anodic oxidation coatings after sealing by dye spot test withprior acid treatment.¾ Part 5: Assessment of quality of sealed anodic oxidation coatings by measurement of admittance.¾ Part 6: Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass afterimmersion in phosphoric acid/chromic acid solution without prior acid treatment.¾ Part 7: Assessment of quality of sealed anodic oxidation coatings by measurement of the loss of mass afterimmersion in phosphoric acid/chromic acid solution with prior acid treatment.¾ Part 8: Determination of the comparative fastness to ultra-violet light and heat of coloured anodic oxidationcoatings.¾ Part 9: Measurement of wear resistance and wear index of anodic oxidation coatings using an abrasive wheelwear test apparatus.¾ Part 10: Measurement of mean specific abrasion resistance of anodic oxidation coatings using an abrasive jettest apparatus.¾
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