IEC TS 60695-5-2:2021

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
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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
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
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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.
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