EN ISO 4623-1:2018

SLOVENSKI STANDARD
01-januar-2019
1DGRPHãþD
SIST EN ISO 4623-1:2002
Barve in laki - Ugotavljanje odpornosti proti filiformni koroziji - 1. del: Jeklene
podlage (ISO 4623-1:2018)
Paints and varnishes - Determination of resistance to filiform corrosion - Part 1: Steel
substrates (ISO 4623-1:2018)
Beschichtungsstoffe - Bestimmung der Beständigkeit gegen Filiformkorrosion - Teil 1:
Stahl als Substrat (ISO 4623-1:2018)
Peintures et vernis - Détermination de la résistance à la corrosion filiforme - Partie 1:
Subjectiles en acier (ISO 4623-1:2018)
Ta slovenski standard je istoveten z: EN ISO 4623-1:2018
ICS:
87.040 Barve in laki Paints and varnishes
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 4623-1
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2018
EUROPÄISCHE NORM
ICS 87.040 Supersedes EN ISO 4623-1:2002
English Version
Paints and varnishes - Determination of resistance to
filiform corrosion - Part 1: Steel substrates (ISO 4623-
1:2018)
Peintures et vernis - Détermination de la résistance à la Beschichtungsstoffe - Bestimmung der Beständigkeit
corrosion filiforme - Partie 1: Subjectiles en acier (ISO gegen Filiformkorrosion - Teil 1: Stahl als Substrat (ISO
4623-1:2018) 4623-1:2018)
This European Standard was approved by CEN on 13 September 2018.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, 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
© 2018 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 4623-1:2018 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 4623-1:2018) has been prepared by Technical Committee ISO/TC 35 "Paints
and varnishes" in collaboration with 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 May 2019, and conflicting national standards shall be
withdrawn at the latest by May 2019.
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 ISO 4623-1:2002.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia,
France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta,
Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Turkey and the United Kingdom.
Endorsement notice
The text of ISO 4623-1:2018 has been approved by CEN as EN ISO 4623-1:2018 without any
modification.
INTERNATIONAL ISO
STANDARD 4623-1
Second edition
2018-10
Paints and varnishes — Determination
of resistance to filiform corrosion —
Part 1:
Steel substrates
Peintures et vernis — Détermination de la résistance à la corrosion
filiforme —
Partie 1: Subjectiles en acier
Reference number
ISO 4623-1:2018(E)
©
ISO 2018
ISO 4623-1:2018(E)
© ISO 2018
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting
on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address
below or ISO’s member body in the country of the requester.
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Phone: +41 22 749 01 11
Fax: +41 22 749 09 47
Email: copyright@iso.org
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Published in Switzerland
ii © ISO 2018 – All rights reserved

ISO 4623-1:2018(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Limitations . 2
6 Sampling . 2
7 Apparatus . 2
8 Reagents . 2
9 Test panels . 2
9.1 Material and dimensions . 2
9.2 Preparation and coating . . 2
9.3 Drying and conditioning . 3
9.4 Thickness of coating . 3
10 Procedure. 3
10.1 Number of determinations . 3
10.2 Scribing the test panels . 3
10.3 Testing . 4
10.3.1 General. 4
10.3.2 Dipping technique . 4
10.3.3 Salt fog technique . 4
10.4 Inspection of test panels . 5
11 Evaluation of the degree of filiform corrosion . 5
12 Precision . 5
13 Test report . 6
Annex A (informative) Guidance notes on maintaining exposure conditions using saturated
ammonium sulfate solution . 7
Bibliography . 8
ISO 4623-1:2018(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.
The procedures used to develop this document and those intended for its further maintenance are
described in the ISO/IEC Directives, Part 1. In particular, the different approval criteria needed for the
different types of ISO documents should be noted. This document was drafted in accordance with the
editorial rules of the ISO/IEC Directives, Part 2 (see www .iso .org/directives).
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www .iso .org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to the
World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT) see www .iso
.org/iso/foreword .html.
This document was prepared by Technical Committee ISO/35, Paints and varnishes, Subcommittee SC 9,
General test methods for paints and varnishes.
This second edition cancels and replaces the first edition (ISO 4623-1:2000), which has been technically
revised. The main changes compared to the previous edition are as follows:
a) the text has been aligned with ISO 4623-2;
b) the introduction of ISO 4623-2 has been copied;
c) the definition of filiform corrosion has been aligned with ISO 4623-2;
d) in 10.2 a reference to ISO 17872 for the cutting tool has been added;
e) in 10.3.3 the time of exposure of the test panels to neutral salt fog has been shortened from
24 h to 4 h;
f) the supplementary test conditions previously in Annex A have been integrated into the test report;
g) the text has been editorially revised and the normative references have been updated.
A list of all parts in the ISO 4623 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www .iso .org/members .html.
iv © ISO 2018 – All rights reserved

ISO 4623-1:2018(E)
Introduction
A scribe mark cut through a coating of paints or varnishes on metal can give rise to various types of
corrosion, such as blistering of the c
...