SIST EN ISO 4628-3:2025
(Main)Paints and varnishes - Evaluation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 3: Assessment of degree of rusting (ISO 4628-3:2024)
Paints and varnishes - Evaluation of quantity and size of defects, and of intensity of uniform changes in appearance - Part 3: Assessment of degree of rusting (ISO 4628-3:2024)
ISO 4628-3:2016 specifies a method for assessing the degree of rusting of coatings by comparison with pictorial standards.
The pictorial standards provided in this part of ISO 4628 show coated steel surfaces which have deteriorated to different degrees by a combination of rust broken through the coating and visible underrust.
NOTE 1 The pictorial standards have been selected from the "European rust scale" published by the European Confederation of Paint, Printing Ink and Artists' Colours Manufacturers' Associations (CEPE), Brussels. The correlation between the ISO scale and the "European rust scale" is given in Annex B, Table B.1.
NOTE 2 The correlation between the ISO scale and the rating system of ASTM D 610 is given in Annex B, Table B.2.
NOTE 3 The rust formation on uncoated steel surfaces is designated in accordance with ISO 8501‑1 (rust grades A, B, C, and D).
ISO 4628‑1 defines the system used for designating the quantity and size of defects and the intensity of changes in appearance of coatings and outlines the general principles of the system. This system is intended to be used, in particular, for defects caused by ageing and weathering, and for uniform changes such as colour changes, for example yellowing.
Beschichtungsstoffe - Beurteilung der Menge und der Größe von Schäden und der Intensität von gleichmäßigen Veränderungen im Aussehen - Teil 3: Bewertung des Rostgrades (ISO 4628-3:2024)
Peintures et vernis - Évaluation de la quantité et de la dimension des défauts, et de l’intensité des changements uniformes d’aspect - Partie 3: Évaluation du degré d’enrouillement (ISO 4628-3:2024)
La présente partie de l'ISO 4628 spécifie une méthode d'évaluation du degré d'enrouillement de revêtements par comparaison avec des étalons illustrés.
Les étalons illustrés fournis dans la présente partie de l'ISO 4628 montrent des surfaces en acier revêtues, détériorées à différents degrés par l'association de rouille traversant le revêtement et de rouille sous-jacente apparente.
NOTE 1 Les étalons illustrés sont choisis dans «l'échelle européenne de degré d'enrouillement» publiée par la Confédération européenne des associations de fabricants de peintures, d'encres d'imprimerie et de couleurs d'art (CEPE), à Bruxelles. La correspondance entre l'échelle ISO et «l'échelle européenne de degré d'enrouillement» est indiquée dans l'Annexe B, Tableau B.1.
NOTE 2 La correspondance entre l'échelle ISO et le système d'évaluation de l'ASTM D 610 est donnée dans l'Annexe B, Tableau B.2.
NOTE 3 La formation de rouille sur des surfaces en acier non revêtues est désignée conformément à l'ISO 8501‑1 (degrés de rouille A, B, C et D).
L'ISO 4628‑1 définit un système de désignation de la quantité et de la dimension des défauts, ainsi que l'intensité des changements d'aspect intervenant sur les revêtements, et expose les principes généraux de ce système. Ce système est destiné à être utilisé, en particulier, pour les défauts causés par le vieillissement et les intempéries, ainsi que pour les changements uniformes tels que les changements de couleur, par exemple le jaunissement.
Barve in laki - Vrednotenje obsega in velikosti poškodb ter intenzitete enakomernih sprememb videza - 3. del: Ocenjevanje stopnje rjavenja (ISO 4628-3:2024)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2025
Nadomešča:
SIST EN ISO 4628-3:2016
Barve in laki - Vrednotenje obsega in velikosti poškodb ter intenzitete
enakomernih sprememb videza - 3. del: Ocenjevanje stopnje rjavenja (ISO 4628-
3:2024)
Paints and varnishes - Evaluation of quantity and size of defects, and of intensity of
uniform changes in appearance - Part 3: Assessment of degree of rusting (ISO 4628-
3:2024)
Beschichtungsstoffe - Beurteilung der Menge und der Größe von Schäden und der
Intensität von gleichmäßigen Veränderungen im Aussehen - Teil 3: Bewertung des
Rostgrades (ISO 4628-3:2024)
Peintures et vernis - Évaluation de la quantité et de la dimension des défauts, et de
l’intensité des changements uniformes d’aspect - Partie 3: Évaluation du degré
d’enrouillement (ISO 4628-3:2024)
Ta slovenski standard je istoveten z: EN ISO 4628-3:2024
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 4628-3
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2024
EUROPÄISCHE NORM
ICS 87.040 Supersedes EN ISO 4628-3:2016
English Version
Paints and varnishes - Evaluation of quantity and size of
defects, and of intensity of uniform changes in appearance
- Part 3: Assessment of degree of rusting (ISO 4628-
3:2024)
Peintures et vernis - Évaluation de la quantité et de la Beschichtungsstoffe - Beurteilung der Menge und der
dimension des défauts, et de l'intensité des Größe von Schäden und der Intensität von
changements uniformes d'aspect - Partie 3: Évaluation gleichmäßigen Veränderungen im Aussehen - Teil 3:
du degré d'enrouillement (ISO 4628-3:2024) Bewertung des Rostgrades (ISO 4628-3:2024)
This European Standard was approved by CEN on 22 November 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 ISO 4628-3:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 4628-3:2024) 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 2025, and conflicting national standards shall be
withdrawn at the latest by May 2025.
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 4628-3:2016.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
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, 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.
Endorsement notice
The text of ISO 4628-3:2024 has been approved by CEN as EN ISO 4628-3:2024 without any
modification.
International
Standard
ISO 4628-3
Fourth edition
Paints and varnishes — Evaluation
2024-11
of quantity and size of defects, and
of intensity of uniform changes in
appearance —
Part 3:
Assessment of degree of rusting
Peintures et vernis — Évaluation de la quantité et de la
dimension des défauts, et de l’intensité des changements
uniformes d’aspect —
Partie 3: Évaluation du degré d’enrouillement
Reference number
ISO 4628-3:2024(en) © ISO 2024
ISO 4628-3:2024(en)
© ISO 2024
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.
ISO copyright office
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Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
ISO 4628-3:2024(en)
Contents Page
Foreword .iv
Introduction .vi
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Symbols and abbreviations . 2
5 Assessment of red rust . 2
5.1 Method 1: Assessment of the degree of red rust by comparison with pictorial standards
(Ri) .2
5.2 Method 2: Assessment of the degree of red rust by estimating the corroded area in per
cent (R%) .8
6 Assessment of white rust . 8
6.1 Method 1: Assessment of the degree of white rust by comparison with pictorial
standards (WRi) .8
6.2 Method 2: Assessment of the degree of white rust by estimating the corroded area in
per cent (WR%) . 13
7 Expression of results . 14
8 Test report . 14
Annex A (normative) Calibration images .15
Annex B (informative) Example for degree of rusting after performing the NSS salt spray test .20
Annex C (informative) Correlation between the ISO rating system specified in this document
and other systems.21
Bibliography .22
iii
ISO 4628-3:2024(en)
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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
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/TC 35, Paints and varnishes, Subcommittee
SC 9, General test methods for paints and varnishes, in collaboration with the European Committee for
Standardization (CEN) Technical Committee CEN/TC 139, Paints and varnishes, in accordance with the
Agreement on technical cooperation between ISO and CEN (Vienna Agreement).
This fourth edition cancels and replaces the third edition (ISO 4628-3:2016), which has been technically
revised.
The main changes are as follows:
— the title has been shortened;
— the normative references have been updated;
— term 3.1, “degree of rusting” has been deleted;
— new terms 3.1 “red rust”, 3.2 “white rust” and 3.3 “rust traces” have been added;
— Clause 4 on symbols and abbreviations has been added;
— “rusted area” has been changed to “corroded area” in the entire text;
— a note on the original size of the figures has been added to the former Clause 4, which now is Clause 5;
— Table 1 for designating the size of rusting has been added;
— the percentage of the corroded area in Figure A.5 has been corrected;
— the assessment of white rust together with new pictorial standards has been added;
— the assessment of the degree of rusting by estimating the corroded area in per cent has been added;
— point “d) the method of assessment (method 1 or method 2) which was used;” has been added to the test
report
...
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