IEC TS 60695-5-2:2021
(Main)Fire hazard testing - Part 5-2: Corrosion damage effects of fire effluent - Summary and relevance of test methods
Fire hazard testing - Part 5-2: Corrosion damage effects of fire effluent - Summary and relevance of test methods
IEC TS 60695-5-2:2021 gives a summary of the test methods that are used in the assessment of the corrosivity of fire effluent. It presents a brief summary of test methods in common use, either as international standards or national or industry standards. It includes special observations on their relevance, for electrotechnical products and their materials, to real fire scenarios and gives recommendations on their use.
One of the responsibilities of a technical committee is, wherever applicable, to make use of basic safety publications in the preparation of its publications. The requirements, test methods or test conditions of this publication will not apply unless specifically referred to or included in the relevant publications.
This third edition cancels and replaces the second edition published in 2002.
The main changes with respect to the previous edition are listed below:
– References to IEC TS 60695-5-3 (withdrawn in 2014) have been removed.
– ISO/TR 9122-1 has been revised by ISO 19706.
– References to ISO 11907-2 and ISO 11907-3 have been removed.
– Terms and definitions have been updated.
– Text in 5.4 has been updated.
– Text in 5.5.8 (5.7.8 in Ed. 2) has been updated.
– Text in Clause 6 (7 in Ed. 2) has been updated.
– Bibliographic references have been updated.
It has the status of a basic safety publication in accordance with IEC Guide 104 and ISO/IEC Guide 51.
This technical specification is to be read in conjunction with IEC 60695-5-1.
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IEC TS 60695-5-2 ®
Edition 3.0 2021-06
TECHNICAL
SPECIFICATION
Fire hazard testing –
Part 5-2: Corrosion damage effects of fire effluent – Summary and relevance of
test methods
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.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
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 corrigendum or an amendment might have been published.
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The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC TS 60695-5-2 ®
Edition 3.0 2021-06
TECHNICAL
SPECIFICATION
Fire hazard testing –
Part 5-2: Corrosion damage effects of fire effluent – Summary and relevance of
test methods
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.220.99; 19.020; 29.020 ISBN 978-2-8322-9842-8
– 2 – IEC TS 60695-5-2:2021 © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms and definitions . 7
4 Classification of test methods . 9
4.1 General . 9
4.2 Test specimen . 9
4.2.1 Product testing . 9
4.2.2 Material or composite sample testing . 9
4.3 The physical fire model . 9
4.4 The nature of the corrosivity measurement . 9
4.4.1 Product as target . 9
4.4.2 Simulated product as target . 9
4.4.3 Indirect assessment . 11
5 Published test methods . 11
5.1 General . 11
5.2 Tests for the determination of halogen acid in combustion gases . 11
5.2.1 Standards . 11
5.2.2 Purpose and principle . 11
5.2.3 Test specimen . 11
5.2.4 Test method . 11
5.2.5 Repeatability and reproducibility . 11
5.2.6 Relevance of test data to corrosion hazard assessment . 12
5.3 Tests for the determination of the acidity and conductivity of combustion
gases dissolved in an aqueous solution . 12
5.3.1 Standards . 12
5.3.2 Purpose and principle . 12
5.3.3 Test specimen . 12
5.3.4 Test method . 12
5.3.5 Repeatability and reproducibility . 12
5.3.6 Relevance of test data to corrosion hazard assessment . 13
5.4 Tests for the determination of corrosive gases by evaluation of copper
corrosion in ASTM D 2671 – Sections 89 to 95 [9] . 13
5.4.1 Purpose and principle . 13
5.4.2 Test specimen . 13
5.4.3 Test methods . 13
5.4.4 Special observations . 13
5.4.5 Repeatability and reproducibility . 13
5.4.6 Relevance of test data to corrosion hazard assessment . 13
5.5 Cone corrosimeter method . 14
5.5.1 Standards . 14
5.5.2 Purpose and principle . 14
5.5.3 Test specimen . 14
5.5.4 Corrosion target . 14
5.5.5 Test method . 14
5.5.6 Special observation . 15
5.5.7 Repeatability and reproducibility . 15
5.5.8 Relevance of test data to corrosion hazard assessment . 15
6 Overview of methods and relevance of data . 15
Annex A (informative) Acidity and conductivity of aqueous solutions – Test methods . 18
Annex B (informative) Determination of repeatability and reproducibility –
Comparative tests of solutions of combustion gases . 19
Bibliography . 23
Figure 1 – Schematic drawing of a typical corrosion target of defined metal thickness . 15
Table 1 – Characteristics of fire stages (from Table 1 in ISO 19706:2011) . 10
Table 2 – Overview of corrosivity test methods . 17
Table A.1 – Test methods for the measurement of acidity and conductivity of aqueous
solutions obtained after bubbling combustion effluent through water . 18
Table B.1 – Determination of repeatability and reproducibility – Comparative pH tests
on solutions of combustion gases . 20
Table B.2 – Determination of repeatability and reproducibility – Comparative resistivity
tests on solutions of combustion gases . 21
Table B.3 – Results obtained on brominated polycarbonate . 22
– 4 – IEC TS 60695-5-2:2021 © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 5-2: Corrosion damage effects of fire effluent –
Summary and relevance of test methods
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.
IEC 60695-5-2, which is a technical specification, has been prepared by IEC technical
committee 89: Fire hazard testing.
This third edition cancels and replaces the second edition published in 2002.
The main changes with respect to the previous edition are listed below:
– References to IEC TS 60695-5-3 (withdrawn in 2014) have been removed.
– ISO/TR 9122-1 has been revised by ISO 19706.
– References to ISO 11907-2 and ISO 11907-3 have been removed.
– Terms and definitions have been updated.
– Text in 5.4 has been updated.
– Text in 5.5.8 (5.7.8 in Ed. 2) has been updated.
– Text in Clause 6 (7 in Ed. 2) has been updated.
...
IEC TS 60695-5-2 ®
Edition 3.0 2021-06
REDLINE VERSION
TECHNICAL
SPECIFICATION
colour
inside
Fire hazard testing –
Part 5-2: Corrosion damage effects of fire effluent – Summary and relevance of
test methods
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.: +41 22 919 02 11
3, rue de Varembé info@iec.ch
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 corrigendum or an amendment might have been published.
IEC publications search - webstore.iec.ch/advsearchform IEC online collection - oc.iec.ch
The advanced search enables to find IEC publications by a Discover our powerful search engine and read freely all the
variety of criteria (reference number, text, technical publications previews. With a subscription you will always
committee, …). It also gives information on projects, replaced have access to up to date content tailored to your needs.
and withdrawn publications.
Electropedia - www.electropedia.org
IEC Just Published - webstore.iec.ch/justpublished
The world's leading online dictionary on electrotechnology,
Stay up to date on all new IEC publications. Just Published
containing more than 22 000 terminological entries in English
details all new publications released. Available online and
and French, with equivalent terms in 18 additional languages.
once a month by email.
Also known as the International Electrotechnical Vocabulary
(IEV) online.
IEC Customer Service Centre - webstore.iec.ch/csc
If you wish to give us your feedback on this publication or
need further assistance, please contact the Customer Service
Centre: sales@iec.ch.
IEC TS 60695-5-2 ®
Edition 3.0 2021-06
REDLINE VERSION
TECHNICAL
SPECIFICATION
colour
inside
Fire hazard testing –
Part 5-2: Corrosion damage effects of fire effluent – Summary and relevance of
test methods
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 13.220.99; 19.020; 29.020 ISBN 978-2-8322-9866-4
– 2 – IEC TS 60695-5-2:2021 RLV © IEC 2021
CONTENTS
FOREWORD . 4
INTRODUCTION . 2
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 9
4 Classification of test methods . 9
4.1 Introduction General . 11
4.2 Test specimen . 11
4.2.1 Product testing . 11
4.2.2 Material or composite sample testing . 11
4.3 The physical fire model . 12
4.4 The nature of the corrosivity measurement . 12
4.4.1 Product testing as target . 12
4.4.2 Simulated product testing as target . 12
4.4.3 Indirect assessment . 14
5 Published test methods . 14
5.1 Introduction General . 14
5.2 Tests for the determination of halogen acid in combustion gases . 14
5.2.1 Standards . 14
5.2.2 Purpose and principle . 14
5.2.3 Test specimen . 15
5.2.4 Test method . 15
5.2.5 Repeatability and reproducibility . 15
5.2.6 Relevance of test data to corrosion hazard assessment . 15
5.3 Tests for the determination of the acidity and conductivity of combustion
gases dissolved in an aqueous solution . 15
5.3.1 Standards . 15
5.3.2 Purpose and principle . 16
5.3.3 Test specimen . 16
5.3.4 Test method . 16
5.3.5 Repeatability and reproducibility . 16
5.3.6 Relevance of test data to corrosion hazard assessment . 16
5.4 Tests for the determination of corrosive gases by using
the copper mirror test in ASTM D 2671-00 [9] evaluation of copper corrosion
in ASTM D 2671 – Sections 89 to 95 0 . 16
5.4.1 Purpose and principle . 16
5.4.2 Test specimen . 16
5.4.3 Test methods . 17
5.4.4 Special observations . 17
5.4.5 Repeatability and reproducibility . 17
5.4.6 Relevance of test data to corrosion hazard assessment . 17
5.5 Static method (ISO 11907-2 [10]) .
5.6 Travelling furnace method (ISO 11907-3 [11]) .
5.5 Cone corrosimeter method . 22
5.5.1 Standards . 22
5.5.2 Purpose and principle . 22
5.5.3 Test specimen . 22
5.5.4 Corrosion target . 22
5.5.5 Test method . 22
5.5.6 Special observation . 23
5.5.7 Repeatability and reproducibility . 23
5.5.8 Relevance of test data to corrosion hazard assessment . 23
6 Leakage current and metal loss (IEC 60695-5-3) .
6.1 Purpose and principle .
6.2 Test specimen .
6.3 Corrosion targets .
6.4 Test method .
6 Overview of methods and relevance of data . 25
Annex A (informative) Acidity and conductivity of aqueous solutions – Test methods . 28
Annex B (informative) Determination of repeatability and reproducibility –
Comparative tests of solutions of combustion gases . 29
Bibliography . 33
Figure – Schematic drawing of a serpentine-track resistance target .
Figure – Interdigitated leakage current target .
Figure 1 – Schematic drawing of a typical corrosion target of defined metal thickness . 23
Table 1 – General classification of fire stages in accordance with ISO/TR 9122-1 .
Table 1 – Characteristics of fire stages (from Table 1 in ISO 19706:2011) . 13
Table 2 – Overview of corrosivity test methods . 27
Table A.1 – Test methods for the measurement of acidity and conductivity of aqueous
solutions obtained after bubbling combustion effluent through water . 28
Table B.1 – Determination of repeatability and reproducibility – Comparative pH tests
on solutions of combustion gases . 30
Table B.2 – Determination of repeatability and reproducibility – Comparative resistivity
tests on solutions of combustion gases . 31
Table B.3 – Results obtained on brominated polycarbonate . 32
– 4 – IEC TS 60695-5-2:2021 RLV © IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
FIRE HAZARD TESTING –
Part 5-2: Corrosion damage effects of fire effluent –
Summary and relevance of test methods
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,
...
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