EN 13523-19:2019

SLOVENSKI STANDARD
01-november-2019
Nadomešča:
SIST EN 13523-19:2011
Prevlečene kovine, ki se navijajo - Preskusne metode - 19. del: Preskusne ploščice
in preskusna metoda izpostavljanja zunanjim vplivom
Coil coated metals - Test methods - Part 19: Panel design and method of atmospheric
exposure testing
Bandbeschichtete Metalle - Prüfverfahren - Teil 19: Probenplatten und Verfahren zur
Freibewitterung
Tôles prélaquées - Méthodes d'essai - Partie 19 : Modèles de panneaux et méthode
d'essai pour les essais d'exposition à l'extérieur
Ta slovenski standard je istoveten z: EN 13523-19:2019
ICS:
25.220.60 Organske prevleke Organic coatings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13523-19
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2019
EUROPÄISCHE NORM
ICS 25.220.60 Supersedes EN 13523-19:2011
English Version
Coil coated metals - Test methods - Part 19: Panel design
and method of atmospheric exposure testing
Tôles prélaquées - Méthodes d'essai - Partie 19 : Bandbeschichtete Metalle - Prüfverfahren - Teil 19:
Modèles de panneaux et méthode d'essai pour les Probenplatten und Verfahren zur Freibewitterung
essais d'exposition à l'extérieur
This European Standard was approved by CEN on 1 July 2019.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, 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
© 2019 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13523-19:2019 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Apparatus . 6
5 Sampling . 7
6 Test panels . 7
6.1 General . 7
6.2 Panel preparation . 7
6.3 Panel design . 7
7 Procedure. 9
8 Expression of results . 9
Annex A (informative) Parameters that can influence exposure results. 14
Annex B (informative) European outdoor exposure sites recommended by ECCA . 16
Bibliography . 17

European foreword
This document (EN 13523-19:2019) has been prepared by Technical Committee CEN/TC 139 “Paints and
varnishes”, 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 or by endorsement, at the latest by March 2020, and conflicting national standards shall be withdrawn
at the latest by March 2020.
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 13523-19:2011.
The main changes compared to EN 13523-19:2011 are:
a) in 4.1 some additional information has been added for the rack design;
b) in 6.3.4 some information on how to use panels 1, 2 and 3 has been added;
c) the test site for continental industrial climate has been deleted from Annex B;
d) the text has been editorially revised and the normative references have been updated.
The EN 13523 series, Coil coated metals — Test methods, consists of the following parts:
— Part 0: General introduction
— Part 1: Film thickness
— Part 2: Gloss
— Part 3: Colour difference — Instrumental comparison
— Part 4: Pencil hardness
— Part 5: Resistance to rapid deformation (impact test)
— Part 6: Adhesion after indentation (cupping test)
— Part 7: Resistance to cracking on bending (T-bend test)
— Part 8: Resistance to salt spray (fog)
— Part 9: Resistance to water immersion
— Part 10: Resistance to fluorescent UV radiation and water condensation
— Part 11: Resistance to solvents (rubbing test)
— Part 12: Resistance to scratching
— Part 13: Resistance to accelerated ageing by the use of heat
— Part 14: Chalking (Helmen method)
— Part 15: Metamerism
— Part 16: Resistance to abrasion
— Part 17: Adhesion of strippable films
— Part 18: Resistance to staining
— Part 19: Panel design and method of atmospheric exposure testing
— Part 20: Foam adhesion
— Part 21: Evaluation of outdoor exposed panels
— Part 22: Colour difference — Visual comparison
— Part 23: Resistance to humid atmospheres containing sulfur dioxide
— Part 24: Resistance to blocking and pressure marking
— Part 25: Resistance to humidity
— Part 26: Resistance to condensation of water
— Part 27: Resistance to humid poultice (Cataplasm test)
— Part 29: Resistance to environmental soiling (Dirt pick-up and striping)
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia,
Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
Introduction
In the past, it has been common practice in the northern hemisphere to expose test panels at 45° facing
South.
Whilst this orientation is appropriate for degradation of the organic coating, investigations have shown that
it has little bearing on the overall corrosion performance of the product when used in building applications.
For example, the 45° facing South exposure takes no account of
— overhangs which produce unwashed areas;
— sheet overlaps;
— low pitched roofing, etc.
The Outdoor Exposure Committee of European Coil Coating Association (ECCA) designed an exposure
system which aligns more closely with “real life” situations and which is the basis of this part of EN 13523.
Three panel orientations are specified:
a) PANEL 1: 45° to horizontal facing South. The traditional orientation for evaluation of organic coatings:
colour change, gloss change, chalking, etc.;
b) PANEL 2: 90° to horizontal facing North, with an overhang for evaluating general corrosion on side
cladding particularly in unwashed areas;
c) PANEL 3: 5° to horizontal facing South. This panel which includes an overlap is principally for evaluating
general corrosion in roofing applications.
The selection of one or more panel designs and their corresponding orientations will be chosen according to
the exposure data required.
The multiplicity of panel types and exposure conditions can be somehow confusing when trying to compare
results from systems that were characterized in different conditions. The normative recommendation is to
use PANEL 1: 45° to horizontal facing South for characterizing UV resistance. PANEL 2 and PANEL 3 are
more suitable for evaluation of corrosion resistance.
1 Scope
This part of EN 13523 specifies the panel design and describes the procedure for determining the resistance
to outdoor exposure of an organic coating on a metallic substrate.
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.
EN 13523-0, Coil coated metals — Test methods — Part 0: General introduction
EN 13523-2, Coil coated metals — Test methods — Part 2: Gloss
EN 13523-3, Coil coated metals — Test methods — Part 3: Colour difference — Instrumental comparison
EN 13523-7:2014, Coil coated metals — Test methods — Part 7: Resistance to cracking on bending (T-bend
test)
EN 13523-14, Coil coated metals — Test methods — Part 14: Chalking (Helmen method)
EN 13523-21, Coil coated metals — Test methods — Part 21: Evaluation of outdoor exposed panels
EN ISO 17872, Paints and varnishes — Guidelines for the introduction of scribe marks through coatings on
metallic panels for corrosion testing (ISO 17872)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 13523-0 apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http://www.electropedia.org/
— ISO Online browsing platform: available at http://www.iso.org/obp
4 Apparatus
4.1 Rack design
The typical rack configuration accommodating the three elevations is shown in Figures 4 a), 4 b) and 5. The
actual design and material of manufacture is at the discretion of the individual taking into consideration the
corrosivity on the exposure site. Similarly the method of fixing the panels to the rack is up to the individual,
but they shall be fixed in such a way as to avoid bimetallic corrosion. The material to provide the overhang
on the North-facing panel shall be manufactured from an inert rigid material such as polymethyl
methacrylate and shall give an overhang on the panel of approximately 65 mm (see 2 in Figure 4 a)).

e.g. Perspex. Perspex is the trade name of a product supplied by Perspecs Distribution Ltd. This information is given
for the convenience of users of this document and does not constitute an endorsement of the product named.
Equivalent products may be used if they can be shown to lead to the same results.
Some racks are designed in such a way that there is nothing behind the exposed panels, some racks are
designed with a rigid support plate behind the panels. A support contributes to the overall ageing
mechanisms because it changes airflows and temperature on the backside of the samples. The
recommendation is an open back of the samples. Other exposure methods are available to enhance
degradation rates. In all cases, details about the rack design shall be given with the outdoor exposure results.
Care shall be taken when comparing data from different methods.
4.2 Apparatus to prepare 90° variable radius bends
Forming the 90° variable radius bends can be made either manually or by an automatic press fitted with a
variable radius forming tool and die. The typical design of a suitable tool and die is illustrated in Figure 6 and
defined in EN 13523-7:2014, 8.2.2.
4.3 Cutting tool, with a hard metal tip having a radius or width capable of exposing at least 0,2 mm of
metal substrate in accordance with EN ISO 17872.
NOTE If the substrate is zinc- or zinc-alloy coated steel, the intention is that the scratch should penetrate as far as
the zinc coating and not further, to the steel.
4.4 Stainless steel self-tapping fixing screws, with integral sealing ring and plastics cover (see Figure 2
and Figure 3).
4.5 Aluminium domed rivets, with a stainless-steel core (see Figure 2 and Figure 3).
5 Sampling
Shall be in accordance with EN 13523-0.
6 Test panels
6.1 General
...