EN 13523-8:2024

SLOVENSKI STANDARD
01-september-2024
Nadomešča:
SIST EN 13523-8:2017
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: EN 13523-8:2024
ICS:
17.040.20 Lastnosti površin Properties of surfaces
25.220.60 Organske prevleke Organic coatings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13523-8
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2024
EUROPÄISCHE NORM
ICS 25.220.60 Supersedes 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 European Standard was approved by CEN on 1 January 2024.

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, Türkiye 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
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13523-8:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 6
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

European foreword
This document (EN 13523-8:2024) 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 October 2024, and conflicting national standards shall
be withdrawn at the latest by October 2024.
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 13523-8:2017.
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
— 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)
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
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, Türkiye and the United
Kingdom.
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 3270:1984)
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 9227:2022, Corrosion tests in artificial atmospheres — Salt spray tests (ISO 9227:2022)
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
3.1
holiday
defect of a paint film
[SOURCE: EN ISO 4618:2023, 3.138]
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 4618:2023, 3.224]
3.2.3
edge
unprotected cut edge, in order to expose the underlying metal substrate prior to exposure in a corrosive
environment
3.3
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]
3.4
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.
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 o
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