EN 13523-18:2020
(Main)Coil coated metals - Test methods - Part 18: Resistance to staining
Coil coated metals - Test methods - Part 18: Resistance to staining
This document specifies test procedures for assessing the effect of chemicals on the characteristics of an organic coating on a metallic substrate. It covers testing by using defined substances and to assess the change in characteristics such as discoloration, change in gloss, blistering, softening, swelling and loss of adhesion. Assessment of other phenomena can be agreed between the interested parties
Bandbeschichtete Metalle - Prüfverfahren - Teil 18: Beständigkeit gegen Fleckenbildung
Dieses Dokument legt Verfahren fest, mit denen der Einfluss von Chemikalien auf die Eigenschaften einer organischen Beschichtung auf einem metallischen Substrat abgeschätzt werden kann. Es schließt die Prüfung mit definierten Substanzen und die Bewertung von Eigenschaftsänderungen wie Verfärbung, Glanz¬änderung, Blasenbildung, Erweichen, Quellen und Haftfestigkeitsverlust ein. Andere Phänomene können nach Vereinbarung zwischen den Vertragspartnern bewertet werden.
Tôles prélaquées - Méthodes d’essai - Partie 18 : Résistance aux taches
Le présent document spécifie des modes opératoires d’essai pour évaluer l’incidence des produits chimiques sur les caractéristiques d’un revêtement organique appliqué sur un subjectile métallique. Il couvre les essais effectués avec des substances définies afin d’évaluer les changements de caractéristiques (décoloration, changement de brillant, cloquage, ramollissement, gonflement et perte d’adhérence). L’évaluation d’autres phénomènes peut faire l’objet d’un accord entre les parties intéressées.
Prevlečene kovine, ki se navijajo - Preskusne metode - 18. del: Odpornost proti nastanku madežev
General Information
- Status
- Published
- Publication Date
- 02-Jun-2020
- Withdrawal Date
- 30-Dec-2020
- Technical Committee
- CEN/TC 139 - Paints and varnishes
- Drafting Committee
- CEN/TC 139/WG 9 - Testing of coil coated metals
- Current Stage
- 9060 - Closure of 2 Year Review Enquiry - Review Enquiry
- Start Date
- 02-Dec-2025
- Completion Date
- 02-Dec-2025
Relations
- Effective Date
- 10-Jun-2020
Overview
EN 13523-18:2020 is a European standard developed by CEN that specifies test methods for evaluating the resistance to staining of coil coated metals. This standard focuses on the impact of various chemicals on the properties of organic coatings applied on metallic substrates. Key characteristics monitored include discoloration, gloss change, blistering, softening, swelling, and loss of adhesion. EN 13523-18:2020 replaces the previous 2002 version, providing updated procedures and guidelines designed to ensure consistent, reliable testing and reporting for coil coated metals.
Key Topics
Test Procedures: The standard outlines three main test methods:
- Spot test (covered): Applying a chemical substance on the coated surface, then covering it with a watch glass to simulate contact.
- Spot test (open): Applying the substance without covering it, allowing exposure to ambient air.
- Immersion test: Partially immersing the coated test panel in the test chemical for a set time.
Substances for Testing: A variety of substances can be used to simulate real-life chemical exposure, including:
- Distilled water (cold and hot)
- Alkaline and acidic solutions (e.g., diluted mineral acid, acetic acid)
- Soap, detergent, oils, fats, and condiments such as mustard or tomato puree
- Beverages like coffee, tea, cola
- Other materials such as lubricating oils, shoe polish, lipstick, marker pens
Coating Characteristics Assessed: The test evaluates:
- Discoloration or staining
- Changes in gloss
- Blistering or softening
- Swelling and loss of adhesion
- Other phenomena can be included upon agreement between interested parties
Testing Environment: Standard test conditions recommend ambient temperature (23 ± 2) °C and relative humidity (50 ± 5) % as per EN 23270, unless otherwise specified.
Sample Preparation: Samples should comply with EN 13523-0 general introduction, ensuring representative coatings and conditioning to standard laboratory environments.
Applications
EN 13523-18:2020 is vital for manufacturers, quality control laboratories, and users in industries utilizing coil coated metals with organic finishes. Practical applications include:
- Quality Assurance: Assess coating durability against common chemical exposures experienced in construction, automotive, appliance, and architectural metal products.
- Product Development: Facilitate formulation improvements by testing new coating materials for enhanced resistance to staining and chemical attack.
- Failure Analysis: Diagnose causes of coating degradation or discoloration linked to chemical exposure in service.
- Compliance Verification: Ensure products meet performance specifications for markets requiring validated resistance to staining.
- Customized Testing: Enables agreement on additional staining or degradation phenomena, tailored to unique industry requirements.
By applying this standard, stakeholders can ensure coil coated metal products maintain aesthetic and protective properties, extending service life and customer satisfaction.
Related Standards
EN 13523 Series: This standard is part 18 of a broad series covering test methods for coil coated metals, including tests for:
- Film thickness (Part 1)
- Gloss (Part 2)
- Adhesion (Parts 6 and 17)
- Resistance to impact, scratching, aging, water, and solvents (Parts 5, 9, 11, 13)
- Other environmental resistance tests (Parts 8, 10, 23, 25)
EN 13523-0: General introduction and guidelines for coil coated metal test methods.
EN 23270: Specifies temperature and humidity conditions for conditioning and testing paints and varnishes.
EN 10169: Defines technical delivery conditions for continuously organic coated steel flat products.
EN 1396: Covers coil coated aluminium and aluminium alloys specifications.
ISO 2812-1: Details immersion testing of paints and varnishes for resistance to liquids.
ASTM D1308: An alternative standard for testing chemical effects on organic finishes, used primarily in North America.
Keywords
- Coil coated metals
- Resistance to staining
- Organic coatings
- Chemical resistance testing
- Coating discoloration test
- Gloss change assessment
- Blistering and adhesion loss
- EN 13523-18
- Metal coating standards
- Quality control testing
- CEN standards
- Surface coating evaluation
By following EN 13523-18:2020, professionals ensure rigorous, standardized testing of stain resistance, supporting enhanced quality and durability of coil coated metal products in diverse environments.
Frequently Asked Questions
EN 13523-18:2020 is a standard published by the European Committee for Standardization (CEN). Its full title is "Coil coated metals - Test methods - Part 18: Resistance to staining". This standard covers: This document specifies test procedures for assessing the effect of chemicals on the characteristics of an organic coating on a metallic substrate. It covers testing by using defined substances and to assess the change in characteristics such as discoloration, change in gloss, blistering, softening, swelling and loss of adhesion. Assessment of other phenomena can be agreed between the interested parties
This document specifies test procedures for assessing the effect of chemicals on the characteristics of an organic coating on a metallic substrate. It covers testing by using defined substances and to assess the change in characteristics such as discoloration, change in gloss, blistering, softening, swelling and loss of adhesion. Assessment of other phenomena can be agreed between the interested parties
EN 13523-18:2020 is classified under the following ICS (International Classification for Standards) categories: 25.220.60 - Organic coatings. The ICS classification helps identify the subject area and facilitates finding related standards.
EN 13523-18:2020 has the following relationships with other standards: It is inter standard links to EN 13523-18:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase EN 13523-18:2020 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of CEN standards.
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2020
Nadomešča:
SIST EN 13523-18:2003
Prevlečene kovine, ki se navijajo - Preskusne metode - 18. del: Odpornost proti
nastanku madežev
Coil coated metals - Test methods - Part 18: Resistance to staining
Bandbeschichtete Metalle - Prüfverfahren - Teil 18: Beständigkeit gegen Fleckenbildung
Tôles prélaquées - Méthodes d'essai - Partie 18 : Résistance aux taches
Ta slovenski standard je istoveten z: EN 13523-18:2020
ICS:
25.220.60 Organske prevleke Organic coatings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 13523-18
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2020
EUROPÄISCHE NORM
ICS 25.220.60 Supersedes EN 13523-18:2002
English Version
Coil coated metals - Test methods - Part 18: Resistance to
staining
Tôles prélaquées - Méthodes d'essai - Partie 18 : Bandbeschichtete Metalle - Prüfverfahren - Teil 18:
Résistance aux taches Beständigkeit gegen Fleckenbildung
This European Standard was approved by CEN on 3 May 2020.
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
© 2020 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13523-18:2020 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 Substances . 6
7 Sampling . 6
8 Test panels . 6
9 Procedure. 6
9.1 General . 6
9.2 Spot test (covered) . 6
9.3 Spot test (open) . 7
9.4 Immersion test . 7
10 Expression of results . 7
11 Precision . 7
12 Test report . 8
Bibliography . 9
European foreword
This document (EN 13523-18:2020) 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 December 2020, and conflicting national standards shall be
withdrawn at the latest by December 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 13523-18:2002.
The main changes are:
a) the required supplementary information (former Clause 10) has been integrated in the test report;
b) 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
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