EN ISO 22479:2022

SLOVENSKI STANDARD
01-september-2022
Nadomešča:
SIST EN ISO 3231:1998
SIST EN ISO 6988:1999
Korozija kovin in zlitin - Korozijski preskus s SO2 v vlažni atmosferi (metoda s
stalno (fiksno) koncentracijo plina) (ISO 22479:2019)
Corrosion of metals and alloys - Sulfur dioxide test in a humid atmosphere (fixed gas
method) (ISO 22479:2019)
Korrosion von Metallen und Legierungen - Prüfung mit Schwefeldioxid in feuchter
Atmosphäre (Verfahren mit festem Gasvolumen) (ISO 22479:2019)
Corrosion des métaux et alliages - Essai au dioxyde de soufre en atmosphère humide
(méthode avec volume fixe de gaz) (ISO 22479:2019)
Ta slovenski standard je istoveten z: EN ISO 22479:2022
ICS:
77.060 Korozija kovin Corrosion of metals
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 22479
EUROPEAN STANDARD
NORME EUROPÉENNE
June 2022
EUROPÄISCHE NORM
ICS 77.060 Supersedes EN ISO 3231:1997, EN ISO 6988:1994
English Version
Corrosion of metals and alloys - Sulfur dioxide test in a
humid atmosphere (fixed gas method) (ISO 22479:2019)
Corrosion des métaux et alliages - Essai au dioxyde de Korrosion von Metallen und Legierungen - Prüfung mit
soufre en atmosphère humide (méthode avec volume Schwefeldioxid in feuchter Atmosphäre (fixed gas
fixe de gaz) (ISO 22479:2019) method) (ISO 22479:2019)
This European Standard was approved by CEN on 20 June 2022.

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
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22479:2022 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
The text of ISO 22479:2019 has been prepared by Technical Committee ISO/TC 156 "Corrosion of
metals and alloys” of the International Organization for Standardization (ISO) and has been taken over
as EN ISO 22479:2022 by Technical Committee CEN/TC 262 “Metallic and other inorganic coatings,
including for corrosion protection and corrosion testing of metals and alloys” the secretariat of which is
held by BSI.
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 2022, and conflicting national standards
shall be withdrawn at the latest by December 2022.
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 3231:1997 and EN ISO 6988:1994.
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 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, Turkey and the
United Kingdom.
Endorsement notice
The text of ISO 22479:2019 has been approved by CEN as EN ISO 22479:2022 without any modification.

INTERNATIONAL ISO
STANDARD 22479
First edition
2019-05
Corrosion of metals and alloys —
Sulfur dioxide test in a humid
atmosphere (fixed gas method)
Corrosion des métaux et alliages — Essai au dioxyde de soufre en
atmosphère humide (méthode avec volume fixe de gaz)
Reference number
ISO 22479:2019(E)
©
ISO 2019
ISO 22479:2019(E)
© ISO 2019
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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Published in Switzerland
ii © ISO 2019 – All rights reserved

ISO 22479:2019(E)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Apparatus . 1
6 Test specimens. 3
6.1 General . 3
6.2 Dimensions . 3
6.3 Preparation . 3
6.3.1 Metals and alloys . 3
6.3.2 Paints and varnishes . 3
6.4 Arrangement of the test specimens . 4
7 Test conditions . 4
7.1 Test cycles . 4
7.2 Test duration . 5
8 Procedure. 6
8.1 Introduction of water . 6
8.2 Arrangement of the test specimens . 6
8.3 Introduction of sulfur dioxide . 6
8.4 Heating the test cabinet. 6
8.5 Introduction of standard atmosphere . 6
8.6 Replacement of water and sulfur dioxide . 6
8.7 Cleaning of test specimens after test . 6
8.7.1 General. 6
8.7.2 Metals and alloys, metallic and non-organic coating test specimens . 6
8.7.3 Organic coating test specimens . 7
8.8 Performance check . 7
9 Evaluation . 7
10 Test report . 7
Annex A (informative) Another example of a test cabinet . 9
Annex B (informative) Performance check .10
Annex C (informative) Supplemental information .12
Bibliography .14
ISO 22479:2019(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 f
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