EN 13523-19:2004

SLOVENSKI STANDARD
01-april-2005
.RYLQHSUHYOHþHQHYVYLWNLK3UHVNXVQHPHWRGHGHO2EOLNRYDQMHSUHVNXVQLK
SORãþLFLQSUHVNXãDQMH]]XQDQMRL]SRVWDYLWYLMR
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: Modeles de panneaux et méthode
d'essai pour les essais d'exposition a l'extérieur
Ta slovenski standard je istoveten z: EN 13523-19:2004
ICS:
25.220.60 Organske prevleke Organic coatings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 13523-19
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2004
ICS 25.220.60
English version
Coil coated metals - Test methods - Part 19: Panel design and
method of atmospheric exposure testing
Tôles prélaquées - Méthodes d'essai - Partie 19: Modèles Bandbeschichtete Metalle - Prüfverfahren - Teil 19:
de panneaux et méthode d'essai pour les essais Probenplatten und Verfahren zur Freibewitterung
d'exposition à l'extérieur
This European Standard was approved by CEN on 23 September 2004.
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 Central Secretariat 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 Central Secretariat has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,
Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia,
Slovenia, Spain, Sweden, Switzerland and United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
Management Centre: rue de Stassart, 36  B-1050 Brussels
© 2004 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13523-19:2004: E
worldwide for CEN national Members.

Foreword
This document (EN 13523-19:2004) 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 May 2005, and conflicting national standards shall be withdrawn at the latest by
May 2005.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark,
Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and 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.
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 referenced documents are indispensable for the application 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 13523-0:2001, 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 13523-7:2001, 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.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 13523-0:2001 apply.
4 Apparatus
4.1 Rack design
The typical rack configuration accommodating the three elevations is shown in Figures 4 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
1)
be manufactured from an inert rigid material such as polymethyl methacrylate and shall give an overhang on the
panel of 65 mm.
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 13523-7:2001, 8.2.2.
1) e.g. Perspex
4.3 Cutting tool, with a hard metal tip (according to Clemen). The cutting tool shall be designed to produce an
indentation mark (scribe mark) with a V-shaped cross-section that exposes a width of at least 0,2 mm of metal
substrate.
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.
2)
4.4 Stainless steel self-tapping fixing screws, with integral sealing ring and plastic cover (see Figure 2).
4.5 Aluminium domed rivets, with a stainless steel core.
5 Sampling
See EN 13523-0.
6 Test panels
See EN 13523-0.
6.1 Panel preparation
For exposure at all three orientations, five blanks per set are required (see Figures 1, 2 and 3).
Panels can be made from laboratory prepared samples or coil line production runs.
All panels shall be prepared from an initial blank size of 200 mm × 150 mm. The 200 mm shall be in the rolling
direction.
When preparing panels, all cuts and drill holes shall be made such that metal burrs occur on the side of the panel
which is not exposed.
All panels shall have a 90° angle bend with a variable radius from 1T to 3T, as described in EN 13523-7.
6.2 Panel design
6.2.1 PANEL 1 (45° facing South, see Figure 1)
Panel 1 consists of a single blank into which a 90° variable radius bend has been produced, 25 mm from and
parallel to the 200 mm edge. The variable radius is from 1T to 3T as defined in EN 13523-7.
All dimensions are shown in Figure 1. This panel shall have all edges protected and shall be mounted such that the
tightest bend radius is at the bottom of the panel. The method of protecting edges is at the discretion of the
individual but recommended practices are taping or coating of the edges.
This panel is used predominantly to measure changes in colour (EN 13523-3), changes in gloss (EN 13523-2) and
degree of chalking (EN 13523-14).
6.2.2 PANEL 2 (90° facing North,
...