IEC 60068-2-52:2017

Environmental testing - Part 2-52: Tests - Test Kb: Salt mist, cyclic (sodium chloride solution)

IEC 60068-2-52:2017 specifies the application of the cyclic salt mist test to components or equipment designed to withstand a salt-laden atmosphere as salt can degrade the performance of parts manufactured using metallic and/or non-metallic materials. This third edition cancels and replaces the second edition published in 1996. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
- the entire content has been harmonized with ISO 9227 as far as possible;
- an introduction has been added;
- the scope has been simplified;
- normative references have been updated;
- the general description of the test has been changed;
- a dry chamber has been added to the test apparatus;
- severities have been changed to test methods;
- test methods 7 and 8 have been added;
- information on the test report has been added;
- Figure 1 has been changed to Table 1;
- a typical test apparatus example has been added in a new Annex A;
- a description of each test method has been added in a new Annex B;
- bibliographical references have been added.
This bilingual version (2019-07) corresponds to the monolingual English version, published in 2017-11.
The French version of this standard has not been voted upon.

Essais d'environnement - Partie 2-52: Essais - Essai Kb: Brouillard salin, essai cyclique (solution de chlorure de sodium)

L'IEC 60068-2-52:2017 spécifie l'application de l'essai cyclique au brouillard salin aux composants ou équipements conçus pour résister à une atmosphère chargée en sel, car le sel peut détériorer le fonctionnement des parties fabriquées à partir de matériaux métalliques et/ou non métalliques.
Cette troisième édition annule et remplace la deuxième édition parue en 1996. Cette édition constitue une révision technique.
Cette édition inclut les modifications techniques majeures suivantes par rapport à l'édition précédente:
- le contenu a été harmonisé autant que possible avec l'ISO 9227;
- une introduction a été ajoutée;
- le domaine d'application a été simplifié;
- les références normatives ont été mises à jour;
- la description générale de l'essai a été modifiée;
- une chambre sèche a été ajoutée à l'appareillage d'essai;
- les sévérités ont été remplacées par les méthodes d'essai;
- les méthodes d'essai 7 et 8 ont été ajoutées;
- des informations sur le rapport d'essai ont été ajoutées;
- la Figure 1 a été remplacée par le Tableau 1;
- un exemple d'appareillage d'essai type a été ajouté à la nouvelle Annexe A;
- une description de chaque méthode d'essai a été ajoutée à la nouvelle Annexe B;
- des références bibliographiques ont été ajoutées.
La présente version bilingue (2019-07) correspond à la version anglaise monolingue publiée en 2017-11.
La version française de cette norme n'a pas été soumise au vote.

General Information

• Status: Published
• Publication Date: 06-Nov-2017
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 19.040 - Environmental testing
• Technical Committee: TC 104 - Environmental conditions, classification and methods of test
• Drafting Committee: MT 16 - TC 104/MT 16
• Current Stage: PPUB - Publication issued
• Start Date: 08-Dec-2017
• Completion Date: 07-Nov-2017

Relations

• Revises: IEC 60068-2-52:1996 - Environmental testing - Part 2: Tests - Test Kb: Salt mist, cyclic (sodium, chloride solution)
• Effective Date: 05-Sep-2023

Standards Content (Sample)

IEC 60068-2-52 ®
Edition 3.0 2017-11
INTERNATIONAL
STANDARD
Environmental testing –
Part 2-52: Tests – Test Kb: Salt mist, cyclic (sodium chloride solution)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Central Office Tel.: [phone]
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Switzerland www.iec.ch
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

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IEC 60068-2-52 ®
Edition 3.0 2017-11
INTERNATIONAL
STANDARD
Environmental testing –
Part 2-52: Tests – Test Kb: Salt mist, cyclic (sodium chloride solution)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 19.040 ISBN 978-2-8322-5004-4

– 2 – IEC 60068-2-52:2017 © IEC 2017
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 General description of the test . 7
4.1 Description of each test condition . 7
4.1.1 General . 7
4.1.2 Salt mist . 8
4.1.3 Dry condition . 8
4.1.4 Humid condition . 8
4.1.5 Standard atmosphere . 8
5 Test apparatus . 8
5.1 General . 8
5.2 Salt mist chamber . 8
5.3 Humidity chamber . 8
5.4 Standard atmosphere chamber . 9
5.5 Dry chamber . 9
6 Salt solution . 9
6.1 Preparation of the sodium chloride solution . 9
6.2 pH adjustment . 9
6.2.1 Neutral salt solution . 9
6.2.2 Acidified salt solution . 9
6.3 Filtration . 9
7 Initial measurements . 9
8 Preconditioning . 9
9 Testing . 9
9.1 Test chamber . 9
9.2 Arrangement of the test specimen(s) . 10
9.3 Conditions during salt mist . 10
9.4 Test methods . 10
9.4.1 General . 10
9.4.2 Test method 1 . 10
9.4.3 Test method 2 . 10
9.4.4 Test method 3 . 10
9.4.5 Test method 4 . 11
9.4.6 Test method 5 . 11
9.4.7 Test method 6 . 11
9.4.8 Test method 7 . 11
9.4.9 Test method 8 . 11
9.5 Test cycles for test methods 1 to 8 . 11
9.6 Removal of the test specimen(s) . 12
10 Recovery (at the end of testing) . 12
11 Final measurements . 13
12 Information to be given in the relevant specification . 13

13 Information to be given in the test report. 13
Annex A (informative) Typical apparatus for cyclic salt mist, humid condition, dry
condition and standard atmosphere corrosion tests . 14
Annex B (informative) Description of each test method . 15
B.1 Test methods 1 and 2 . 15
B.2 Test methods 3 to 6 . 15
B.3 Test methods 7 and 8 . 15
Bibliography . 16

Figure A.1 – Example of test apparatus . 14

Table 1 – Test cycles for test methods 1 to 8 . 12

– 4 – IEC 60068-2-52:2017 © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENVIRONMENTAL TESTING –
Part 2-52: Tests – Test Kb: Salt mist, cyclic
(sodium chloride solution)
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60068-2-52 has been prepared by IEC technical committee 104:
Environmental conditions, classification and methods of test.
This third edition cancels and replaces the second edition published in 1996. This edition
constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
a) the entire content has been harmonized with ISO 9227 as far as possible;
b) an introduction has been added;
c) the scope has been simplified;
d) normative references have been updated;
e) the general description of the test has been changed;

f) a dry chamber has been added to the test apparatus;
g) severities have been changed to test methods;
h) test methods 7 and 8 have been added;
i) information on the test report has been added;
j) Fi
...

IEC 60068-2-52 ®
Edition 3.0 2017-11
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Environmental testing –
Part 2-52: Tests – Test Kb: Salt mist, cyclic (sodium chloride solution)

All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
either IEC or IEC's member National Committee in the country of the requester. If you have any questions about IEC
copyright or have an enquiry about obtaining additional rights to this publication, please contact the address below or
your local IEC member National Committee for further information.

IEC Central Office Tel.: [phone]
3, rue de Varembé [e-mail]
CH-1211 Geneva 20 www.iec.ch
Switzerland
About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigenda or an amendment might have been published.

IEC Catalogue - webstore.iec.ch/catalogue Electropedia - www.electropedia.org
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bibliographical information on IEC International Standards, electrical terms containing 21 000 terms and definitions in
Technical Specifications, Technical Reports and other English and French, with equivalent terms in 16 additional
documents. Available for PC, Mac OS, Android Tablets and languages. Also known as the International Electrotechnical
iPad. Vocabulary (IEV) online.

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The advanced search enables to find IEC publications by a 67 000 electrotechnical terminology entries in English and
variety of criteria (reference number, text, technical French extracted from the Terms and Definitions clause of
committee,…). It also gives information on projects, replaced IEC publications issued since 2002. Some entries have been
and withdrawn publications. collected from earlier publications of IEC TC 37, 77, 86 and

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IEC 60068-2-52 ®
Edition 3.0 2017-11
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Environmental testing –
Part 2-52: Tests – Test Kb: Salt mist, cyclic (sodium chloride solution)

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 19.040 ISBN 978-2-8322-5027-3

– 2 – IEC 60068-2-52:2017 RLV © IEC 2017
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 8
4 General description of the test . 8
4.1 Description of each test condition . 8
4.1.1 General . 8
4.1.2 Salt mist . 8
4.1.3 Dry condition . 8
4.1.4 Humid condition . 9
4.1.5 Standard atmosphere . 9
5 Test apparatus . 9
5.1 General . 9
5.2 Salt mist chamber . 9
5.3 Humidity chamber . 10
5.4 Standard atmosphere chamber . 10
5.5 Dry chamber . 10
6 Salt solution . 10
6.1 Preparation of the sodium chloride solution . 11
6.2 pH adjustment . 11
6.2.1 Neutral salt solution . 11
6.2.2 Acidified salt solution . 11
6.3 Filtration . 11
6 Severities .
7 Initial measurements . 12
8 Preconditioning . 12
9 Testing . 12
9.1 Test chamber . 13
9.2 Arrangement of the test specimen(s) . 13
9.3 Conditions during salt mist . 13
9.4 Test methods . 14
9.4.1 General . 14
9.4.2 Test method 1 . 14
9.4.3 Test method 2 . 14
9.4.4 Test method 3 . 14
9.4.5 Test method 4 . 14
9.4.6 Test method 5 . 14
9.4.7 Test method 6 . 14
9.4.8 Test method 7 . 14
9.4.9 Test method 8 . 15
9.5 Test cycles for test methods 1 to 8 . 15
9.6 Removal of the test specimen(s) . 16
10 Recovery (at the end of testing) . 16
11 Final measurements . 17

12 Information to be given in the relevant specification . 17
13 Information to be given in the test report. 17
Annex A (informative) Typical apparatus for cyclic salt mist, humid condition, dry
condition and standard atmosphere corrosion tests . 19
Annex B (informative) Description of each test method . 20
B.1 Test methods 1 and 2 . 20
B.2 Test methods 3 to 6 . 20
B.3 Test methods 7 and 8 . 20
Bibliography . 21

Figure 1 – Schematic time-scale of the different test severities (1) to (6) .
Figure A.1 – Example of test apparatus . 19

Table 1 – Test cycles for test methods 1 to 8 . 16

– 4 – IEC 60068-2-52:2017 RLV © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENVIRONMENTAL TESTING –
Part 2-52: Tests – Test Kb: Salt mist, cyclic
(sodium chloride solution)
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence
between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.

International Standard IEC 60068-2-52 has been prepared by IEC technical committee 104:
Environmental conditions, classification and methods of test.
This third edition cancels and replaces the second edition published in 1996. This edition
constitutes a techni
...

IEC 60068-2-52 ®
Edition 3.0 2017-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Environmental testing –
Part 2-52: Tests – Test Kb: Salt mist, cyclic (sodium chloride solution)

Essais d'environnement –
Partie 2-52: Essais – Essai Kb: Brouillard salin, essai cyclique (solution de
chlorure de sodium)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form
or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from
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About the IEC
The International Electrotechnical Commission (IEC) is the leading global organization that prepares and publishes
International Standards for all electrical, electronic and related technologies.

About IEC publications
The technical content of IEC publications is kept under constant review by the IEC. Please make sure that you have the
latest edition, a corrigendum or an amendment might have been published.

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IEC 60068-2-52 ®
Edition 3.0 2017-11
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Environmental testing –
Part 2-52: Tests – Test Kb: Salt mist, cyclic (sodium chloride solution)

Essais d'environnement –
Partie 2-52: Essais – Essai Kb: Brouillard salin, essai cyclique (solution de

chlorure de sodium)
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 19.040 ISBN 978-2-8322-7231-2

– 2 – IEC 60068-2-52:2017 © IEC 2017
CONTENTS
CONTENTS . 2
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 General description of the test . 7
4.1 Description of each test condition . 7
4.1.1 General . 7
4.1.2 Salt mist . 8
4.1.3 Dry condition . 8
4.1.4 Humid condition . 8
4.1.5 Standard atmosphere . 8
5 Test apparatus . 8
5.1 General . 8
5.2 Salt mist chamber . 8
5.3 Humidity chamber . 8
5.4 Standard atmosphere chamber . 9
5.5 Dry chamber . 9
6 Salt solution . 9
6.1 Preparation of the sodium chloride solution . 9
6.2 pH adjustment . 9
6.2.1 Neutral salt solution . 9
6.2.2 Acidified salt solution . 9
6.3 Filtration . 9
7 Initial measurements . 9
8 Preconditioning . 9
9 Testing . 9
9.1 Test chamber . 9
9.2 Arrangement of the test specimen(s) . 10
9.3 Conditions during salt mist . 10
9.4 Test methods . 10
9.4.1 General . 10
9.4.2 Test method 1 . 10
9.4.3 Test method 2 . 10
9.4.4 Test method 3 . 10
9.4.5 Test method 4 . 11
9.4.6 Test method 5 . 11
9.4.7 Test method 6 . 11
9.4.8 Test method 7 . 11
9.4.9 Test method 8 . 11
9.5 Test cycles for test methods 1 to 8 . 11
9.6 Removal of the test specimen(s) . 12
10 Recovery (at the end of testing) . 12
11 Final measurements . 13

12 Information to be given in the relevant specification . 13
13 Information to be given in the test report. 13
Annex A (informative) Typical apparatus for cyclic salt mist, humid condition, dry
condition and standard atmosphere corrosion tests . 14
Annex B (informative) Description of each test method . 15
B.1 Test methods 1 and 2 . 15
B.2 Test methods 3 to 6 . 15
B.3 Test methods 7 and 8 . 15
Bibliography . 16

Figure A.1 – Example of test apparatus . 14

Table 1 – Test cycles for test methods 1 to 8 . 12

– 4 – IEC 60068-2-52:2017 © IEC 2017
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
ENVIRONMENTAL TESTING –
Part 2-52: Tests – Test Kb: Salt mist, cyclic
(sodium chloride solution)
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC
Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested
in the subject dealt with may participate in this preparatory work. International, governmental and non-
governmental organizations liaising with the IEC also participate in this preparation. IEC collaborates closely
with the International Organization for Standardization (ISO) in accordance with conditions determined by
agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. Whil
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