SIST EN 13523-12:2024

Coil coated metals - Test methods - Part 12: Resistance to scratching

This document specifies the procedure for determining the resistance of an organic coating on a metallic substrate to penetration by scratching with a needle.
It is possible that with some aluminium alloys and thin gauge steel substrate below 0,4 mm, that rather than scratching, the needle will deform the substrate. Under these conditions, this test method is not applicable.
Soft coatings such as poly vinyl chloride (PVC) and structured coatings will not give a precise result due to the soft nature of the coating and/or the potential for the needle to snag.
The method is not applicable to conductive coatings.

Bandbeschichtete Metalle - Prüfverfahren - Teil 12: Widerstand gegen Ritzen

Dieses Dokument legt ein Verfahren zum Bestimmen der Widerstandsfähigkeit einer organischen Beschichtung auf einem metallischen Substrat gegen das Eindringen eines Ritzstichels fest.
Bei einigen Aluminiumlegierungen und bei dünnem Stahlblech mit einer Dicke unter 0,4 mm kann es dazu kommen, dass der Stichel eher das Substrat verformt als die Beschichtung ritzt. Unter diesen Bedingungen ist dieses Prüfverfahren nicht anwendbar.
Bei weichen Beschichtungen, z. B. auf Polyvinylchlorid-(PVC-)Basis, und strukturierten Beschichtungen wird auf Grund der Weichheit der Beschichtung und/oder des Verhakens des Stichels kein genaues Ergebnis erhalten.
Das Verfahren ist nicht anwendbar auf leitfähige Beschichtungen.

Tôles prélaquées - Méthodes d'essai - Partie 12 : Résistance à la rayure

Le présent document spécifie le mode opératoire permettant de déterminer la résistance d’un revêtement organique appliqué sur un subjectile métallique lorsqu’il est soumis à la pénétration par rayure d’une aiguille.
Il se peut qu’avec certains alliages d’aluminium ou avec des subjectiles d’acier d’épaisseur inférieure à 0,4 mm, l’aiguille déforme le subjectile au lieu de le rayer. Dans ces conditions, cette méthode d’essai ne s’applique pas.
Les revêtements mous, tels que le chlorure de polyvinyle (PVC) et les revêtements structurés, peuvent ne pas donner de résultat précis en raison de la souplesse du revêtement et/ou du risque que l’aiguille accroche.
Cette méthode d’essai ne s’applique pas aux revêtements conducteurs.

Prevlečene kovine, ki se navijajo - Preskusne metode - 12. del: Odpornost proti razenju

Ta del skupine standardov EN 13523 opisuje postopek za ugotavljanje odpornosti organske prevleke na kovinski podlagi proti prediranju pri razenju z iglo.
Pri nekaterih aluminijevih zlitinah in tankih pločevinastih podlagah z debelino manj kot 0,4 mm je možno, da bo namesto razenja igla deformirala podlago. Pri teh pogojih se ta metoda ne uporablja.
Pri mehkih prevlekah iz npr. polivinilklorida (PVC) in strukturiranih prevlekah ne bo natančnih rezultatov zaradi mehkobe prevleke in/ali možnosti zatikanja igle.
Metoda se ne uporablja za prevodne prevleke.

General Information

• Status: Published
• Public Enquiry End Date: 02-Oct-2023
• Publication Date: 11-Aug-2024
• ICS: 17.040.20 - Properties of surfaces
• ICS: 25.220.60 - Organic coatings
• Technical Committee: IBLP - Paints and varnishes
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 17-Jun-2024
• Due Date: 22-Aug-2024
• Completion Date: 12-Aug-2024
• Ref Project: EN 13523-12:2024 - Coil coated metals - Test methods - Part 12: Resistance to scratching

Relations

• Replaces: SIST EN 13523-12:2017 - Coil coated metals - Test methods - Part 12: Resistance to scratching
• Effective Date: 01-Sep-2024

Overview

SIST EN 13523-12:2024 is a European standard developed by CEN that specifies the test method for determining the resistance to scratching of organic coatings applied on metallic substrates, particularly coil coated metals. This test method assesses the coating's ability to withstand penetration caused by scratching with a needle under a defined load. The standard is essential for quality control and performance evaluation of organic coatings, mainly in the coil coating industry.

This updated 2024 edition supersedes EN 13523-12:2017, including improvements such as guidance on scratching direction and detailed procedures for manufacturing and re-tipping scratch test needles. It is mandatory for use as a national standard in CEN member countries.

Key Topics

• Scope and Applicability

  • Suitable for organic coatings on metallic substrates.
  • Not applicable for aluminium alloys and thin gauge steel below 0.4 mm thickness due to substrate deformation instead of scratching.
  • Unsuitable for soft coatings like poly vinyl chloride (PVC), structured coatings, or conductive coatings due to imprecision or test limitations.

• Test Principle
  The test involves dragging a test panel beneath a needle with a spherical tip, applying a specified load to detect penetration by electrical contact with the metallic substrate.

• Apparatus and Materials

  • Scratch apparatus compliant with EN ISO 1518-1, which includes a sliding table, needle holder, and electrical meter for penetration detection.
  • Needles with tips made of hardened steel or tungsten carbide; tungsten carbide recommended for longer service life. Procedures for needle manufacture and re-tipping are detailed in the annex.

• Test Procedure

  • Panels are conditioned to ambient or specified temperature and humidity.
  • The scratching direction relative to the rolling direction is defined and controlled.
  • Multiple tests are run at increasing loads until penetration occurs, with results expressed as pass/fail or load values.
  • Smooth, consistent scratching movement is crucial for valid results.

• Reporting Requirements
  Test reports must include product details, testing conditions (temperature, scratching direction), results, deviations, observations, and test date, ensuring traceability and reproducibility.

Applications

SIST EN 13523-12:2024 is primarily applied in industries involving coil coated metals, including:

• Architectural and automotive industries where durable organic coatings on metal panels are critical.
• Manufacturing quality control for verifying coating protection against scratching during handling, forming, and end-use.
• Material development and R&D to assess new coating formulations for scratch resistance.
• Compliance and certification processes as part of broader coil coating standards.

This standard supports enhanced product reliability by providing a reliable method to assess the mechanical robustness of organic coatings against mechanical damage such as scratching.

Related Standards

SIST EN 13523-12:2024 is part of the comprehensive EN 13523 series on coil coated metals test methods, including but not limited to:

• EN 13523-0:2021 – General introduction to coil coated metal test methods.
• EN 13523-1 to EN 13523-29 – Covering other properties such as film thickness, gloss, adhesion, impact resistance, UV resistance, solvent resistance, abrasion resistance, and environmental exposure testing.

Additional relevant standards:

• EN ISO 1518-1 – Paints and varnishes - Determination of scratch resistance by constant-loading method, which aligns closely with the testing apparatus requirements.
• EN 1396 – Specifications for coil coated aluminium and aluminium alloys.
• EN 10169 – Technical delivery conditions for continuously organic coated steel flat products.

For precise conditioning environments, EN 23270 defines the temperature and humidity conditions for testing paints and coatings.

---

By implementing SIST EN 13523-12:2024, stakeholders can ensure standardised evaluation of scratch resistance critical for durability and aesthetic quality of coil coated metals, enhancing product performance and customer confidence.

Standards Content (Sample)

SLOVENSKI STANDARD
01-september-2024
Nadomešča:
SIST EN 13523-12:2017
Prevlečene kovine, ki se navijajo - Preskusne metode - 12. del: Odpornost proti
razenju
Coil coated metals - Test methods - Part 12: Resistance to scratching
Bandbeschichtete Metalle - Prüfverfahren - Teil 12: Widerstand gegen Ritzen
Tôles prélaquées - Méthodes d'essai - Partie 12 : Résistance à la rayure
Ta slovenski standard je istoveten z: EN 13523-12:2024
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 13523-12
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2024
EUROPÄISCHE NORM
ICS 25.220.60 Supersedes EN 13523-12:2017
English Version
Coil coated metals - Test methods - Part 12: Resistance to
scratching
Tôles prélaquées - Méthodes d'essai - Partie 12 : Bandbeschichtete Metalle - Prüfverfahren - Teil 12:
Résistance à la rayure Widerstand gegen Ritzen
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 13523-12:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 5
5 Apparatus . 5
6 Sampling . 6
7 Test panels . 7
8 Procedure . 7
8.1 Ambient conditions . 7
8.2 Determination . 7
9 Expression of results . 7
10 Precision . 7
11 Test report . 8
Annex A (informative) Procedure found to be convenient for manufacture and re-tipping of
scratch test needles . 9
A.1 Manufacture of new needles . 9
A.2 Re-tipping of needles . 9
A.3 Guidance on tip material . 9
Bibliography . 11

European foreword
This document (EN 13523-12:2024) 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 13523-12:2017.
12:2017:
a) in 8.2 information on direction of scratching has been added;
b) Annex A concerning details about the tip and the needle has been added;
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.
...