ISO 6270-3:2018

INTERNATIONAL ISO
STANDARD 6270-3
First edition
2018-01
Paints and varnishes — Determination
of resistance to humidity —
Part 3:
Condensation (in-cabinet exposure
with heated, bubbling water
reservoir)
Peintures et vernis — Détermination de la résistance à l'humidité —
Partie 3: Condensation (exposition dans une étuve avec barboteur
chauffé)
Reference number
ISO 6270-3:2018(E)
©
ISO 2018

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ISO 6270-3:2018(E)

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ii © ISO 2018 – All rights reserved

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ISO 6270-3:2018(E)

Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Limitations . 2
6 Apparatus . 2
7 Test specimens. 3
7.1 Material and dimensions . 3
7.2 Preparation and coating . . 4
7.3 Drying and conditioning . 4
7.4 Thickness of coating . 4
8 Procedure. 4
8.1 Arrangement of test specimens . 4
8.2 Start-up . 5
8.3 Set of test specimens . 5
8.4 Duration of test . 5
9 Evaluation . 5
10 Precision . 5
11 Test report . 5
Bibliography . 7
© ISO 2018 – All rights reserved iii

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ISO 6270-3:2018(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 on 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 the following
URL: 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.
A list of all parts in the ISO 6270 series can be found on the ISO website.
iv © ISO 2018 – All rights reserved

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ISO 6270-3:2018(E)

Introduction
This document is intended to give consistent conditions and procedures for the conditioning of pre-
prepared test specimens which are to be evaluated for defects which can develop when they are
subjected to humid ambient atmospheres such as constant condensation-water atmospheres or
alternating condensation-water atmospheres.
The tests are designed to clarify the behaviour of the test specimens in humid ambient atmospheres,
and to pinpoint any defects in the protection of the test specimens against corrosion. The testing of
coatings in these atmospheres does not necessarily give lifetime prediction data.
After conditioning, the test specimens are evaluated either in accordance with documents, such as the
appropriate part(s) of ISO 4628, or by procedures agreed between the interested parties.
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INTERNATIONAL STANDARD ISO 6270-3:2018(E)
Paints and varnishes — Determination of resistance to
humidity —
Part 3:
Condensation (in-cabinet exposure with heated, bubbling
water reservoir)
1 Scope
This document specifies the general conditions and procedures to be observed when testing coated
test specimens in constant condensation water atmospheres in order to ensure that the results of tests
carried out in different laboratories are reproducible.
NOTE The shape and preparation of the test specimens, the duration of the test and the assessment of the
test results are not covered in this document.
2 Normative references
The following
...