SIST EN 13523-21:2004
(Main)Coil coated metals - Test methods - Part 21: Evaluation of outdoor exposed panels
Coil coated metals - Test methods - Part 21: Evaluation of outdoor exposed panels
This Part of this European Standard specifies the procedure for evaluating the behaviour of an organic coating on a metallic substrate during and after outdoor exposure. Panel design, preparation and the procedure for outdoor exposure are to be performed in accordance with EN 13523-19.
After washing of the panel some dirt can remain on the panel. This remaining dirt can influence the accuracy and precision of readings of gloss and colour, performed on exposed panels, although carried out in accordance with the standards. Unlike other precise measurements, the objective of this Part of this European Standard is to report on trends in the corrosion and/or paint degradation behaviour of coil coated panels.
Bandbeschichtete Metalle - Prüfverfahren - Teil 21: Bewertung von freibewitterten Probenplatten
Dieser Teil dieser Europäischen Norm legt das Bewerten einer organischen Beschichtung auf einem metallischen Substrat während oder nach einer Freibewitterung fest. Die Maße der Probenplatte, Vorbereitung und Durchführung der Freibewitterung müssen PREN 13523-19 entsprechen.
Nach dem Waschen der Probenplatten kann etwas Schmutz auf der Probenplatte verbleiben. Bei Glanz- und Farbmessungen an bewitterten Platten, obwohl normgerecht durchgeführt, ist deshalb nicht die gleiche Genauigkeit und Präzision sichergestellt. Im Unterschied zu anderen genauen Messungen soll dieser Teil dieser Europäischen Norm Tendenzen im Korrosions- und Abbauverhalten von Beschichtungen auf bandbeschichteten Platten ermitteln.
Tôles prélaquées - Méthodes d'essai - Partie 21 : Evaluation des panneaux exposés en extérieur
La présente partie de la Norme européenne décrit le mode opératoire pour évaluer le comportement d'un revetement organique sur un subjectile métallique durant et apres exposition a l'extérieur. La conception des panneaux, la préparation et le mode opératoire d'exposition a l'extérieur sont a réaliser conformément au prEN 13523-19.
Apres lavage du panneau, il est possible que toute la saleté ne soit pas éliminée. La saleté qui subsiste peut influer sur la précision et la fidélité des lectures du brillant et de la couleur réalisées sur les panneaux exposés, meme si celles-ci sont effectuées conformément aux normes. Contrairement a d'autres mesures fideles, le but de la présente partie de cette norme européenne est de faire rapport sur les tendances observées concernant le comportement a la corrosion et ou a la dégradation de la peinture des panneaux prélaqués.
Kovine, zaščitene po postopku coil-coating – Preskusne metode – 21. del: Ovrednotenje preskušancev, izpostavljenih zunanjemu okolju
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Bandbeschichtete Metalle - Prüfverfahren - Teil 21: Bewertung von freibewitterten ProbenplattenTôles prélaquées - Méthodes d'essai - Partie 21 : Evaluation des panneaux exposés en extérieurCoil coated metals - Test methods - Part 21: Evaluation of outdoor exposed panels25.220.60Organske prevlekeOrganic coatings17.040.20Lastnosti površinProperties of surfacesICS:Ta slovenski standard je istoveten z:EN 13523-21:2003SIST EN 13523-21:2004en01-januar-2004SIST EN 13523-21:2004SLOVENSKI
STANDARD
SIST EN 13523-21:2004
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13523-21August 2003ICS 17.040.20; 25.220.60English versionCoil coated metals - Test methods - Part 21: Evaluation ofoutdoor exposed panelsTôles prélaquées - Méthodes d'essai - Partie 21 :Evaluation des panneaux exposés en extérieurBandbeschichtete Metalle - Prüfverfahren - Teil 21:Bewertung von freibewitterten ProbenplattenThis European Standard was approved by CEN on 10 July 2003.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,Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and UnitedKingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2003 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13523-21:2003 ESIST EN 13523-21:2004
EN 13523-21:2003 (E)2ForewordThis document (EN 13523-21:2003) has been prepared by Technical Committee CEN/TC 139 “Paints andvarnishes”, the secretariat of which is held by DIN.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 2004, and conflicting national standards shall be withdrawn at the latestby February 2004.This document has been prepared under a mandate given to CEN by the European Commission and the EuropeanFree Trade Association, and supports essential requirements of EU Directive(s).According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal,Slovakia, Spain, Sweden, Switzerland and the United Kingdom.SIST EN 13523-21:2004
EN 13523-21:2003 (E)31 ScopeThis Part of this European Standard specifies the procedure for evaluating the behaviour of an organic coating on ametallic substrate during and after outdoor exposure. Panel design, preparation and the procedure for outdoorexposure are to be performed in accordance with prEN 13523-19.After washing of the panel some dirt can remain on the panel. This remaining dirt can influence the accuracy andprecision of readings of gloss and colour, performed on exposed panels, although carried out in accordance with thestandards. Unlike other precise measurements, the objective of this Part of this European Standard is to report ontrends in the corrosion and/or paint degradation behaviour of coil coated panels.2 Normative referencesThis European Standard incorporates, by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN 13523-0:2001, Coil coated metals — Test methods — Part 0: General introduction and list of test methods.EN 13523-2, Coil coated metals — Test methods — Part 2: Specular gloss.EN 13523-3, Coil coated metals — Test methods — Part 3: Colour difference — Instrumental comparison.EN 13523-14, Coil coated metals — Test methods — Part 14: Chalking (Helmen method).prEN 13523-19, Coil coated metals — Test methods — Part 19: Panel design and method for atmosphericexposure testing.prEN ISO 4628-2, Paints and varnishes — Evaluation of degradation of coatings - Designation of quantity and sizeof defects, and of intensity of uniform changes in appearance — Part 2: Assessment of degree of blistering(ISO/FDIS 4628-2:2003).prEN ISO 4628-3, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity andsize of defects, and of intensity of uniform changes in appearance — Part 3: Assessment of degree of rusting(ISO/FDIS 4628-3:2003).prEN ISO 4628-4, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity andsize of defects, and of intensity of uniform changes in appearance — Part 4: Assessment of degree of cracking(ISO/FDIS 4628-4:2003).prEN ISO 4628-5, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity andsize of defects, and of intensity of uniform changes in appearance — Part 5: Assessment of the degree of flaking(ISO/FDIS 4628-5:2003).3 Terms and definitionsFor the purposes of this European Standard the terms and definitions given in EN 13523-0:2001 apply.SIST EN 13523-21:2004
EN 13523-21:2003 (E)44 PrincipleThe behaviour of the test panels exposed in accordance with prEN 13523-19 is evaluated. Any degradation in therelevant area is reported, using the relevant Parts of EN 13523 and appropriate International Standards.In cases where the inspection area is limited (e.g. at screws and bends), the evaluation method described in the prENISO 4628 series is replaced by an easier and more suitable measurement of the degradation in millimetres.Where possible, the results of symmetrical areas, e.g. left and right edges, are combined and the mean value isreported.The inspection of the 45° panel (panel 1) will focus on paint degradation, whereas the 90° panel (panel 2) and the 5°panel (panel 3) are mainly evaluated for corrosion.NOTE 1Panel designations (1, 2, 3) are as defined in prEN 13523-19.NOTE 2Due to restrictions in the available flat area, the number of recommended readings may vary from the Parts ofEN 13523 and relevant International Standards.NOTE 3It is strongly recommended to take a photograph of each exposed panel at each inspection.5 Apparatus and materials5.1Gloss meter, in accordance with EN 13523-2.5.2Apparatus for colour measurement, in accordance with EN 13523-3.5.3Apparatus for measurement of chalking, in accordance with EN 13523-14.5.4Washing solution, containing a mass fraction of 0,5 % of a mild non-reactive detergent (pH value of
6 to 7)in water.5.5Cloth or sponge, non-abrasive and smooth.6 SamplingSee EN 13523-0.7 Test panelsSee EN 13523-0.8 Procedure8.1 GeneralEvaluate the coating properties at ambient temperature.It is recommended that the panels are inspected not less than every six months in the first year and yearly afterwards.Colour measurements on metallics as well as gloss and colour measurements on textured and embossed surfaces areonly indicative.SIST EN 13523-21:2004
EN 13523-21:2003 (E)58.2 Preparation8.2.1Ensure that results of the measurements of gloss in accordance with EN 13523-2 and colour in accordancewith EN 13523-3 are available before exposure of the test panels.In case of use of reference panels, these panels shall be kept in an envelope and not exposed to any light source.8.2.2Some measurements require a washed area prior to inspection. Washing is then performed as follows:Wash the upper 1/3 part of the 45° panel with washing solution (5.4) at ambient temperature (see the note). Use thecloth or sponge (5.5) to gently clean the surface. Rinse with water at ambient temperature and air dry at ambienttemperature.NOTEWashing should be carried out in such a way that the other 2/3 of the panel is not affected.8.3 Evaluation8.3.1 GeneralThe following procedure describes the sets of different readings which have to be taken. For each panel the method isaccompanied with a table summarising the different measurements and their corresponding European Standard orInternational Standard.8.3.2 Panel 1 (45° panel)A summary of the different measurements and evaluations on panel 1 is given in table 1.For gloss and colour change, measurements shall be performed on the washed area of the panel. Chalking and theevaluation of the overall surface shall be performed on the unwashed area of the panel. Cracking on the bend shall beevaluated on both the washed and unwashed area of the panel.Inspect the panels as indicated in a) to e) below.a) Change in glossMeasure the gloss in accordance with EN 13523-2. Perform the reading parallel with the bend and report themean value of not less than three measurements. Use the same measurement angle as has been used for theinitial measurement prior to exposure and report this angle. Report both initial gloss and gloss after exposurefrom which the change in gloss and the gloss retention can
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