EN 13523-8:2024
(Main)Coil coated metals - Test methods - Part 8: Resistance to salt spray (fog)
Coil coated metals - Test methods - Part 8: Resistance to salt spray (fog)
This part of The EN 13523 series specifies the procedures for determining the resistance to salt spray (fog) of an organic coating on a metallic substrate (coil coating).
For steel, neutral salt spray (fog) is usually used, and for aluminium, acetic acid salt spray (fog).
Bandbeschichtete Metalle - Prüfverfahren - Teil 8: Beständigkeit gegen Salzsprühnebel
Tôles prélaquées - Méthodes d'essai - Partie 8 : Résistance au brouillard salin
Le présent document spécifie les modes opératoires à appliquer pour déterminer la résistance au brouillard salin d’un revêtement organique appliqué sur un subjectile métallique (prélaquage en bandes continues).
Un brouillard salin neutre est généralement utilisé pour l’acier et un brouillard salin d’acide acétique pour l’aluminium.
Prevlečene kovine, ki se navijajo - Preskusne metode - 8. del: Odpornost proti slani megli
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 13523-8:2023
01-september-2023
Prevlečene kovine, ki se navijajo - Preskusne metode - 8. del: Odpornost proti
slani megli
Coil coated metals - Test methods - Part 8: Resistance to salt spray (fog)
Bandbeschichtete Metalle - Prüfverfahren - Teil 8: Beständigkeit gegen Salzsprühnebel
Tôles prélaquées - Méthodes d'essai - Partie 8 : Résistance au brouillard salin
Ta slovenski standard je istoveten z: prEN 13523-8
ICS:
25.220.60 Organske prevleke Organic coatings
oSIST prEN 13523-8:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN 13523-8:2023
oSIST prEN 13523-8:2023
DRAFT
EUROPEAN STANDARD
prEN 13523-8
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2023
ICS 25.220.60 Will supersede EN 13523-8:2017
English Version
Coil coated metals - Test methods - Part 8: Resistance to
salt spray (fog)
Tôles prélaquées - Méthodes d'essai - Partie 8 : Bandbeschichtete Metalle - Prüfverfahren - Teil 8:
Résistance au brouillard salin Beständigkeit gegen Salzsprühnebel
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 139.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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, Türkiye and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13523-8:2023 E
worldwide for CEN national Members.
oSIST prEN 13523-8:2023
prEN 13523-8:2023 (E)
Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 7
5 Apparatus and materials . 7
6 Sampling . 7
7 Test panels . 7
7.1 General. 7
7.2 Option 1 . 8
7.3 Option 2 . 9
8 Procedure . 9
8.1 Test conditions . 9
8.2 Exposure of test panels . 9
8.3 Evaluation . 10
8.3.1 General. 10
8.3.2 Blistering . 10
8.3.3 Corrosion and/or delamination . 10
9 Expression of results . 10
10 Precision . 11
11 Test report . 11
Bibliography . 12
oSIST prEN 13523-8:2023
prEN 13523-8:2023 (E)
European foreword
This document (prEN 13523-8:2023) has been prepared by Technical Committee CEN/TC 139 “Paints
and varnishes”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 13523-8:2017.
In comparison with the previous edition, the following technical modifications have been made:
a) the distance between the two scribes has been changed from 10 mm to 20 mm, to be in line with
other standards on salt spray fog tests;
b) the width of the scribe has been changed from at least “0,2 mm” to “0,2 mm to 1,0 mm”;
c) 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 and metamerism — 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 16: Resistance to abrasion
— Part 17: Adhesion of strippable films
oSIST prEN 13523-8:2023
prEN 13523-8:2023 (E)
— 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)
oSIST prEN 13523-8:2023
prEN 13523-8:2023 (E)
1 Scope
This document specifies the procedures for determining the resistance to salt spray (fog) of an organic
coating on a metallic substrate (coil coating).
For steel, neutral salt spray (fog) is usually used, and for aluminium, acetic acid salt spray (fog).
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 13523-7:2021, Coil coated metals — Test methods — Part 7: Resistance to cracking on bending (T-bend
test)
EN 13523-19:2019, Coil coated metals — Test methods — Part 19: Panel design and method of atmospheric
exposure testing
EN 23270, Paints and varnishes and their raw materials — Temperatures and humidities for conditioning
and testing (ISO 3270)
EN 60454-2, Pressure-sensitive adhesive tapes for electrical purposes — Part 2: Methods of test
(IEC 60454-2)
EN ISO 3696, Water for analytical laboratory use — Specification and test methods (ISO 3696)
EN ISO 4628-2, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity
and size of defects, and of intensity of uniform changes in appearance — Part 2: Assessment of degree of
blistering (ISO 4628-2)
EN ISO 4628-8, Paints and varnishes — Evaluation of degradation of coatings — Designation of quantity
and size of defects, and of intensity of uniform changes in appearance — Part 8: Assessment of degree of
delamination and corrosion around a scribe or other artificial defect (ISO 4628-8)
EN ISO 9227:2017, Corrosion tests in artificial atmospheres — Salt spray tests (ISO 9227:2017)
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 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
• IEC Electropedia: available at https://www.electropedia.org/
• ISO Online browsing platform: available at https://www.iso.org/obp
oSIST prEN 13523-8:2023
prEN 13523-8:2023 (E)
3.1
holiday
absence of a paint film from certain areas of a coated substrate
[SOURCE: EN ISO 4628-8:2012, 3.1]
3.2
artificial defect
holiday through a coating, deliberately introduced in order to expose the underlying metal substrate
prior to exposure to a corrosive environment
[SOURCE: EN ISO 4628-8:2012, 3.2]
3.2.1
circular defect
circular holiday through a coating, deliberately introduced in order to expose the underlying metal
substrate prior to exposure in a corrosive environment
[Source: EN ISO 4628-8:2012, 3.3]
3.2.2
scribe
linear holiday through a coating, deliberately introduced in order to expose the underlying metal
substrate prior to exposure in a corrosive environment
[SOURCE: EN ISO 4628-8:2012, 3.6]
3.2.3
edge
unprotected cut edge, in order to expose the underlying metal substrate prior to exposure in a corrosive
environment
3.3
corroded area
area around a defect where the substrate has been attacked by corrosion
[SOURCE: EN ISO 4628-8:2012, 3.4]
3.4
delaminated area
area around a defect where loss of adhesion of a coating from a substrate or an underlying coating has
occurred
[SOURCE: EN ISO 4628-8:2012, 3.5]
3.5
general surface
any area 10 mm or more away from any artificial defect and bend
Note 1 to entry: See EN 10169:2022, 7.5.8.3.2.
oSIST prEN 13523-8:2023
prEN 13523-8:2023 (E)
4 Principle
A test specimen is exposed to a salt spray (fog) for a specified period of time and assessed for possible
corrosion expressed by a degree of delamination or corrosion and a degree of blistering.
5 Apparatus and materials
Ordinary laboratory apparatus and glassware, together with the following:
5.1 Salt spray cabinet, in accordance with EN ISO 9227.
5.2 Test solution, as specified in 5.2.1 or 5.2.2 respectively.
5.2.1 For neutral salt spray fog, the test solution shall be prepared by dissolving sodium chloride in
water of at least grade 3 purity, as defined in EN ISO 3696, to produce a concentration of (50 ± 5) g/l. The
sodium chloride shall be white, of minimum purity 99,6 % (by mass), and substantially free from copper
and nickel; it shall contain no more than 0,1 % (by mass) of sodium iodide. If the pH of the solution is
outside the range 6,0 to 7,0, the presence of undesirable impurities in the salt or the water or both shall
be investigated. The pH of the test solution shall be adjusted so that the pH of sprayed solution collected
within the salt spray cabinet (5.1) is between 6,5 and 7,2. Any necessary adjustment to the pH shall be
made by additions of solutions of either hydrochloric acid or sodium bicarbonate of analytical grade (see
also EN ISO 9227, NSS test).
5.2.2 For acetic acid salt spray (fog), add a sufficient amount of glacial acetic acid to the sodium chloride
solution (5.2.1) to ensure that the pH of sprayed solution collected within the salt spray cabinet (5.1) is
between 3,1 and 3,3. If the pH of the solution initially prepared is 3,0 to 3,1, the pH of the sprayed solution
is likely to be within the specified limits (see also EN ISO 9227, AASS test).
Under normal conditions, the level of glacial acetic acid required is approximately 0,3 % (by mass).
5.3 Cutting tool, with a hard metal tip having a radius or width capable of exposing at least 0,2 mm of
metal substrate according to EN ISO 17872.
5.4 Transparent pressure-sensitive ad
...
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