SIST EN ISO 4624:2004

SLOVENSKI STANDARD
SIST EN ISO 4624:2004
01-januar-2004
Barve in laki – Merjenje oprijema z metodo odtrganja filma (Pull-off test ) (ISO
4624:2002)
Paints and varnishes - Pull-off test for adhesion (ISO 4624:2002)
Beschichtungsstoffe - Abreißversuch zur Bestimmung der haftfestigkeit (ISO 4624:2002)
Peintures et vernis - Essai de traction (ISO 4624:2002)
Ta slovenski standard je istoveten z: EN ISO 4624:2003
ICS:
87.040 Barve in laki Paints and varnishes
SIST EN ISO 4624:2004 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 4624:2004

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SIST EN ISO 4624:2004
EUROPEAN STANDARD
EN ISO 4624
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2003
ICS 87.040 Supersedes EN 24624:1992
English version
Paints and varnishes - Pull-off test for adhesion (ISO
4624:2002)
Peintures et vernis - Essai de traction (ISO 4624:2002) Beschichtungsstoffe - Abreißversuch zur Bestimmung der
haftfestigkeit (ISO 4624:2002)
This European Standard was approved by CEN on 17 March 2003.
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 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 Management Centre has the same status as the official
versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, 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
© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4624:2003 E
worldwide for CEN national Members.

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SIST EN ISO 4624:2004
EN ISO 4624:2003 (E)
Foreword
The text of ISO 4624:2002 has been prepared by Technical Committee ISO/TC 35 "Paints and
varnishes" of the International Organization for Standardization (ISO) and has been taken over
as EN ISO 4624:2003 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 November 2003, and conflicting national
standards shall be withdrawn at the latest by November 2003.
This document supersedes EN 24624:1992.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
Endorsement notice
The text of ISO 4624:2002 has been approved by CEN as EN ISO 4624:2003 without any
modifications.
NOTE Normative references to International Standards are listed in annex ZA (normative).
2

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SIST EN ISO 4624:2004
EN ISO 4624:2003 (E)
Annex ZA
(normative)
Normative references to international publications
with their relevant European publications
This European Standard incorporates by dated or undated reference, provisions from other
publications. These normative references are cited at the appropriate places in the text and the
publications are listed hereafter. For dated references, subsequent amendments to or revisions of
any of these publications apply to this European Standard only when incorporated in it by
amendment or revision. For undated references the latest edition of the publication referred to
applies (including amendments).
NOTE Where an International Publication has been modified by common modifications, indicated
by (mod.), the relevant EN/HD applies.
Publication Year Title EN Year
ISO 1513 1992 Paints and varnishes - Examination EN ISO 1513 1991
and preparation of samples for
testing
ISO 1514 1993 Paints and varnishes - Standard EN ISO 1514 1997
panels for testing
ISO 2808 1997 Paints and varnishes - Determination EN ISO 2808 1999
of film thickness
ISO 3270 1984 Paints and varnishes and their raw EN 23270 1991
materials - Temperatures and
humidities for conditioning and
testing
ISO 15528 2000 Paints, varnishes and raw materials EN ISO 15528 2000
for paints and varnishes - Sampling
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SIST EN ISO 4624:2004

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SIST EN ISO 4624:2004
INTERNATIONAL ISO
STANDARD 4624
Second edition
2002-02-01
Paints and varnishes — Pull-off test for
adhesion
Peintures et vernis — Essai de traction

Reference number
ISO 4624:2002(E)
©
ISO 2002

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SIST EN ISO 4624:2004
ISO 4624:2002(E)
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©
ii ISO 2002 – All rights reserved

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SIST EN ISO 4624:2004
ISO 4624:2002(E)
Contents Page
1 Scope . 1
2 Normative references . 1
3 Principle . 1
4 Required supplementary information . 2
5 Apparatus . 2
6 Adhesives . 4
7 Sampling . 4
8 Test panels . 5
9 Procedure . 5
10 Calculation and expression of results . 8
11 Precision . 8
12 Test report . 9
Annex
A Required supplementary information. 10
Bibliography. 11
©
ISO 2002 – All rights reserved iii

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SIST EN ISO 4624:2004
ISO 4624:2002(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this International Standard may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
International Standard ISO4624 was prepared by Technical Committee ISO/TC35, Paints and varnishes,
Subcommittee SC 9, General test methods for paints and varnishes.
This second edition cancels and replaces the first edition (ISO 4624:1978), clause 6 and subclauses 5.1, 5.2, 5.4
and 8.2 of which have been technically revised.
Annex A forms a normative part of this International Standard.
©
iv ISO 2002 – All rights reserved

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SIST EN ISO 4624:2004
ISO 4624:2002(E)
Introduction
This International Standard is one of two standards which describe methods for assessing the adhesion of a single
coating or a multi-coat system of paint, varnish or related product by measuring the minimum tensile stress
necessary to detach or to rupture the coating in a direction perpendicular to the substrate.
The test result is influenced not only by the mechanical properties of the system under test, but also by the nature
and preparation of the substrate, the method of paint application, the drying conditions of the coating, the
temperature, the humidity and other factors like the type of test instrument which has been used.
The other International Standard is ISO 2409:1992, Paints and varnishes — Cross-cut test.
©
ISO 2002 – All rights reserved v

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SIST EN ISO 4624:2004

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SIST EN ISO 4624:2004
INTERNATIONAL STANDARD ISO 4624:2002(E)
Paints and varnishes — Pull-off test for adhesion
1 Scope
This International Standard describes methods for determining the adhesion by carrying out a pull-off test on a single
coating or a multi-coat system of paint, varnish or related product.
These test methods have been found useful in comparing the adhesion behaviour of different coatings. It is most
useful in providing relative ratings for a series of coated panels exhibiting significant differences in adhesion.
The test may be applied using a wide range of substrates. Different procedures are given according to whether the
substrate is deformable, for example thin metal, plastics and wood, or rigid, for example thick concrete and metal
plates. For special purposes, the coating may be applied directly to the face of a test dolly.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute provisions of
this International Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this International Standard are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below. For
undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC
maintain registers of currently valid International Standards.
ISO 1513:1992, Paints and varnishes — Examination and preparation of samples for testing
1)
ISO 1514:— , Paints and varnishes — Standard panels for testing
ISO 2808:1997, Paints and varnishes — Determination of film thickness
ISO 3270:1984, Paints and varnishes and their raw materials — Temperatures and humidities for conditioning and
testing
ISO 15528:2000, Paints, varnishes and raw materials for paints and varnishes — Sampling
3 Principle
The product or system under test is applied at uniform thickness to flat panels of uniform surface texture.
After drying/curing the coating system, dollies are bonded directly to the surface of the coated, cured panel using an
adhesive.
After curing of the adhesive, the bonded dolly assemblies are placed in a suitable tensile tester. The bonded
assemblies are subjected to a controlled tensile test (pull-off test), and the force required to break the
coating/substrate bond is measured.
The test result is the tensile stress necessary to break the weakest interface (adhesive failure) or the weakest
component (cohesive failure) of the test assembly. Mixed adhesive/cohesive failures may also occur.
1) To be published. (Revision of ISO 1514:1993)
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SIST EN ISO 4624:2004
ISO 4624:2002(E)
4 Required supplementary information
For any particular application, the test methods specified in this International Standard need to be completed by
supplementary information.
The items of supplementary information are given in annex A.
5 Apparatus
5.1 Tensile tester, suitable for carrying out the chosen procedure specified in clause 9. The tensile stress shall be
applied in a direction perpendicular to the plane of the coated substrate and shall be increased at a substantially
2)
uniform rate, no
...