SIST EN 12373-1:2002

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Aluminium und Aluminiumlegierungen - Anodisieren - Teil 1: Methode zur Spezifizierung dekorativer und schützender anodisch erzeugter Oxidschichten auf AluminiumAluminium et alliages d'aluminium - Anodisation - Partie 1: Méthode de spécification des caractéristiques des revetements décoratifs et protecteurs obtenus par oxydation anodique sur aluminiumAluminium and aluminium alloys - Anodizing - Part 1: Method for specifying decorative and protective anodic oxidation coatings on aluminium77.120.10Aluminij in aluminijeve zlitineAluminium and aluminium alloys25.220.20Površinska obdelavaSurface treatmentICS:Ta slovenski standard je istoveten z:EN 12373-1:2001SIST EN 12373-1:2002en01-februar-2002SIST EN 12373-1:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 12373-1May 2001ICS 25.220.20; 77.120.10English versionAluminium and aluminium alloys - Anodizing - Part 1: Method forspecifying decorative and protective anodic oxidation coatingson aluminiumAluminium et alliages d'aluminium - Anodisation - Partie 1:Méthode de spécification des caractéristiques desrevêtements décoratifs et protecteurs obtenus paroxydation anodique sur aluminiumAluminium und Aluminiumlegierungen - Anodisieren - Teil1: Methode zur Spezifizierung dekorativer und schützenderanodisch erzeugter Oxidschichten auf AluminiumThis European Standard was approved by CEN on 20 April 2001.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, 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© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 12373-1:2001 ESIST EN 12373-1:2002

Page 2EN 12373-1:2001ContentsPageForeword.31Scope.52Normative references.53Terms and definitions.74Information to be supplied by the purchaser to the anodizer.95Tests.126Coating thickness.127Quality of sealing.148Quality of cold impregnation.159Appearance and colour.1510Corrosion resistance.1611Abrasion resistance.1612Resistance to cracking by deformation.1613Fastness to light and to ultraviolet radiation.1614Light reflection properties.1715Electric breakdown potential.1916Continuity of the coating.1917Mass per unit area (surface density) of the coating.19Annex A (informative) Guide to grades of aluminium for anodizing.20Annex B (informative) Guidance on surface preparation.22Annex C (normative) Interpretation of average and local thickness requirements.24Annex D (informative) Guidance on the choice of coating thickness class.25Annex E (informative) Guidance on cleaning materials for external architecturalapplications.26Bibliography.27SIST EN 12373-1:2002

Page 3EN 12373-1:2001ForewordThis European Standard 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 anidentical text or by endorsement, at the latest by November 2001, and conflicting nationalstandards shall be withdrawn at the latest by November 2001.In this standard, annex C is normative and annexes A, B, D and E are informative.EN 12373, Aluminium and aluminium alloys – Anodizing, comprises the following parts:Part 1:Method for specifying decorative and protective anodic oxidation coatings onaluminiumPart 2:Determination of mass per unit area (surface density) of anodic oxidationcoatings – Gravimetric methodPart 3:Determination of thickness of anodic oxidation coatings – Non-destructivemeasurement by split beam microscopePart 4:Estimation of loss of absorptive power of anodic oxidation coatings aftersealing by dye spot test with prior acid treatmentPart 5:Assessment of quality of sealed anodic oxidation coatings by measurement ofadmittancePart 6:Assessment of quality of sealed anodic oxidation coatings by measurement of theloss of mass after immersion in phosphoric acid/chromic acid solution withoutprior acid treatmentPart 7:Assessment of quality of sealed anodic oxidation coatings by measurement of theloss of mass after immersion in phosphoric acid/chromic acid solution with prioracid treatmentPart 8:Determination of the comparative fastness to ultra-violet light and heat ofcoloured anodic oxidation coatingsPart 9:Measurement of wear resistance and wear index of anodic oxidation coatingsusing an abrasive wheel wear test apparatusPart 10:Measurement of mean specific abrasion resistance of anodic oxidation coatingsusing an abrasive jet test apparatusPart 11:Measurement of specular reflectance and specular gloss of anodic oxidationcoatings at angles of 20, 45, 60 or 85Part 12:Measurement of reflectance characteristics of aluminium surfaces usingintegrating-sphere instrumentsPart 13:Measurement of reflectivity characteristics of aluminium surfaces using agoniophotometer or an abridged goniophotometerPart 14:Visual determination of image clarity of anodic oxidation coatings – Chart scalemethodPart 15:Assessment of resistance of anodic oxidation coatings to cracking by deformationSIST EN 12373-1:2002

Page 4EN 12373-1:2001Part 16:Check for continuity of thin anodic oxidation coatings – Copper sulfate testPart 17:Determination of electric breakdown potentialPart 18:Rating system for the evaluation of pitting corrosion – Chart methodPart 19:Rating system for the evaluation of pitting corrosion – Grid methodAccording to the CEN/CENELEC Internal Regulations, the national standards organizations ofthe following countries are bound to implement this European Standard: Austria, Belgium, CzechRepublic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg,Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 12373-1:2002

Page 5EN 12373-1:20011ScopeThis part of this European Standard describes a method for specifying decorative and protectiveanodic oxidation coatings on aluminium.It is applicable to the specification of coatings, mainly of aluminium oxide, which are formed onaluminium by an electrolytic oxidation process in which the aluminium acts as the anode.It is not applicable to the specification of:a) non-porous oxide coatings of the barrier layer type;b) coatings produced by chromic acid or phosphoric acid anodizing;c) oxide coatings intended merely to prepare the substrate for subsequent application oforganic coatings or electrodeposition of metals;d) “hard anodized” coatings, used mainly for engineering purposes, for which abrasion andwear resistance are the primary characteristics (see ISO 10074).WARNING
This standard is intended for use by purchasers requiring a product to be anodized andprovides a checklist of properties which might or might not be relevant. It contains requirements tobe agreed between the interested parties and is presented as a method for specifying and not as aspecification; it is therefore not appropriate to claim that an anodic oxidation coating conforms tothis standard.2Normative referencesThis European Standard incorporates, by dated or undated reference, provisions from otherpublications. These normative references are cited at the appropriate places in the text and thepublications are listed hereafter. For dated references, subsequent amendments to, or revisions of,any of these publications apply to this European Standard only when incorporated in it byamendment or revision. For undated references, the latest edition of the publication referred toapplies (including amendments).EN 12373-2Aluminium and aluminium alloys — Anodizing — Part 2:Determination of mass per unit area (surface density) of anodicoxidation coatings — Gravimetric methodEN 12373-3Aluminium and aluminium alloys — Anodizing — Part 3:Determination of thickness of anodic oxidation coatings — Non-destructive measurement by split beam microscopeEN 12373-4Aluminium and aluminium alloys — Anodizing – Part 4:
Estimation of loss of absorptive power of anodic oxidation coatingsafter sealing by dye spot test with prior acid treatmentEN 12373-5Aluminium and aluminium alloys — Anodizing – Part 5:
Assessment of quality of sealed anodic oxidation coatings bymeasurement of admittanceSIST EN 12373-1:2002

Page 6EN 12373-1:2001EN 12373-6Aluminium and aluminium alloys — Anodizing – Part 6:
Assessment of quality of sealed anodic oxidation coatings bymeasurement of the loss of mass after immersion in phosphoricacid/chromic acid solution without prior acid treatmentEN 12373-7Aluminium and aluminium alloys — Anodizing — Part 7: Assessmentof quality of sealed anodic oxidation coatings by measurement of theloss in mass after immersion in phosphoric acid/chromic acid solutionwith prior acid treatmentEN 12373-8Aluminium and aluminium alloys – Anodizing – Part 8: Determinationof the comparative fastness to ultra-violet light and heat of colouredanodic oxidation coatingsEN 12373-9Aluminium and aluminium alloys — Anodizing — Part 9:Measurement of wear resistance and wear index of anodic oxidationcoatings using an abrasive wheel wear test apparatusEN 12373-10Aluminium and aluminium alloys — Anodizing — Part 10:Measurement of mean specific abrasion resistance of anodic oxidationcoatings using an abrasive jet test apparatusEN 12373-11Aluminium and aluminium alloys – Anodizing – Measurement ofspecular reflectance and specular gloss of anodic oxidation coatings atangles of 20, 45, 60 or 85EN 12373-12Aluminium and aluminium alloys – Anodizing – Measurement ofreflectance characteristics of aluminium surfaces using integrating-sphere instrumentsEN 12373-13Aluminium and aluminium alloys – Anodizing – Measurement ofreflectivity characteristics of aluminium surfaces using agoniophotometer or an abridged goniophotometerEN 12373-14Aluminium and aluminium alloys – Anodizing – Visual determinationof image clarity of anodic oxidation coatings –Chart scale methodEN 12373-15Aluminium and aluminium alloys — Anodizing — Part 15:Assessment of resistance of anodic oxidation coatings to cracking bydeformationEN 12373-16:2001Aluminium and aluminium alloys — Anodizing — Part 16: Check forcontinuity of thin anodic oxidation coatings — Copper sulfate testEN 12373-17:2001Aluminium and aluminium alloys — Anodizing — Part 17:Determination of electric breakdown potentialEN ISO 1463 Metallic and oxide coatings — Measurement of coating thickness —Microscopical method (ISO 1463:1982)EN ISO 2360 Non-conductive coatings on non-magnetic basis metals — Measurementof coating thickness — Eddy current method (ISO 2360:1982)NOTE
Informative references to documents used in the preparation of this standard, and cited at theappropriate places in the text, are listed in the bibliography.SIST EN 12373-1:2002

Page 7EN 12373-1:20013Terms and definitionsFor the purposes of this European Standard the following terms and definitions apply.NOTE
Definitions identified by an asterisk are taken from EN ISO 2064.3.1aluminiumaluminium and aluminium-based alloys3.2anodized aluminiumaluminium with an anodic coating, produced by an electrolytic oxidation process in which thesurface of the aluminium is converted to a mainly oxide coating having protective, decorative orfunctional properties3.3clear anodized aluminiumanodized aluminium with a substantially colourless, translucent anodic oxidation coating3.4colour anodized aluminiumanodized aluminium coloured either during anodizing or by subsequent colouring processes3.5integral colour anodized aluminiumanodized aluminium that has been anodized using an appropriate (usually organic acid based)electrolyte which produces a coloured coating during the anodizing process itself3.6electrolytically coloured anodized aluminiumanodized aluminium with an anodic oxidation coating that has been coloured by the electrolyticdeposition of a metal or metal oxide into the pore structure3.7dyed anodized aluminiumanodized aluminium with an anodic oxidation coating coloured by absorption of dye-stuff orpigments into the pore structure3.8combination colour anodized aluminiumanodiz
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