ISO 10047:2025

International
Standard
ISO 10047
Second edition
Textiles — Determination of surface
2025-12
burning time of fabrics
Textiles — Détermination de la durée de brûlage en surface des
étoffes
Reference number
© ISO 2025
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.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: +41 22 749 01 11
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 1
5 Health and safety of test operators . 1
6 Apparatus and materials . 2
7 Location of test . 3
8 Preparation and conditioning of test specimens . 3
8.1 Size .3
8.2 Number .4
8.3 State of fabric .4
8.4 Conditioning of test specimens .4
9 Procedure . 4
10 Test report . 5
Annex A (normative) Burner — Description and construction . 6
Annex B (normative) Brushing device for raising the surface fibres of a fabric test specimen . 9
Bibliography .11

iii
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of 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 www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 38, Textiles.
This second edition cancels and replaces the first edition (ISO 10047:1993), which has been technically
revised.
The main changes are as follows:
— Figure A.1 b) has been revised to show the angular dimension lines and the angular dimensions clear.
This revision clarifies without any structural changes.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
International Standard ISO 10047:2025(en)
Textiles — Determination of surface burning time of fabrics
1 Scope
This document specifies a method for the measurement of surface burning time of textile fabrics which have
a raised fibre surface, i.e. a napped, pile, tufted, flocked or similar surface.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content constitutes
requirements of this document. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
ISO 4880, Burning behaviour of textiles and textile products — Vocabulary
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 4880 and the following apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at http:// www .electropedia .org/
— ISO Online browsing platform: available at http:// www .iso .org/ obp
3.1
surface burn
combustion limited to the surface of a material
3.2
surface burning time
time required for the pile or nap of a fabric to burn a defined distance when tested by the method described
herein
4 Principle
A dry test specimen of the fabric is supported on a vertical plate and its raised surface is ignited near the
top in a specified manner. The spread of flame downwards on the surface of the fabric to a reference line is
timed.
NOTE The flame of a pile surface travels more reproducibly downwards or sideways than upwards. It is
considered there is a possibility that the blanketing effect of the combustion products do not allow the surface pile
above the flame front to burn, whereas the surface pile below the flame front is not affected in this way.
5 Health and safety of test operators
Burning of textiles may produce smoke and toxic gases which can affect the health of operators. The testing
area shall be cleared of smoke and fumes by suitable means of forced ventilation after each test, then
restored to the required testing conditions (see Clause 7 and 9.1).

6 Apparatus and materials
6.1 Construction of testing equipment
The equipment shall be constructed of material which will not be adversely affected by the gas fumes. Some
products of combustion are corrosive, and the equipment shall be made of materials which will facilitate
cleaning.
6.2 Test specimen holder, consisting of a stainless steel plate approximately 150 mm long, 75 mm wide
and 3 mm thick (see Figure 1). The test specimen shall be framed by stainless steel 3 mm thick so that an
area of 125 mm × 50 mm of fabric surface is exposed for testing. The frame shall have a reference mark
which shall be 75 mm below the ignition point of t
...