EN ISO 9773:2024

SLOVENSKI STANDARD
01-december-2024
Polimerni materiali - Določanje obnašanja pri gorenju pokončno postavljenih,
tankih upogljivih preskušancev pri stiku z majhnim plamenom (ISO 9773:2024)
Plastics - Determination of burning behaviour of thin flexible vertical specimens in
contact with a small-flame ignition source (ISO 9773:2024)
Kunststoffe - Bestimmung des Brandverhaltens von dünnen, biegsamen, vertikal
ausgerichteten Probekörpern in Kontakt mit einer kleinen Zündquelle (ISO 9773:2024)
Plastiques - Détermination du comportement au feu d'éprouvettes minces verticales
souples au contact d'une petite flamme comme source d'allumage (ISO 9773:2024)
Ta slovenski standard je istoveten z: EN ISO 9773:2024
ICS:
13.220.40 Sposobnost vžiga in Ignitability and burning
obnašanje materialov in behaviour of materials and
proizvodov pri gorenju products
83.080.01 Polimerni materiali na Plastics in general
splošno
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 9773
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2024
EUROPÄISCHE NORM
ICS 13.220.40; 83.080.01 Supersedes EN ISO 9773:1998, EN ISO
9773:1998/A1:2003
English Version
Plastics - Determination of burning behaviour of thin
flexible vertical specimens in contact with a small-flame
ignition source (ISO 9773:2024)
Plastiques - Détermination du comportement au feu Kunststoffe - Bestimmung des Brandverhaltens von
d'éprouvettes minces verticales souples au contact dünnen, biegsamen, vertikal ausgerichteten
d'une petite flamme comme source d'allumage (ISO Probekörpern in Kontakt mit einer kleinen Zündquelle
9773:2024) (ISO 9773:2024)
This European Standard was approved by CEN on 11 May 2024.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9773:2024 E
worldwide for CEN national Members.

Contents Page
European foreword . 3

European foreword
This document (EN ISO 9773:2024) has been prepared by Technical Committee ISO/TC 61 "Plastics" in
collaboration with Technical Committee CEN/TC 249 “Plastics” the secretariat of which is held by SIS.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by March 2025, and conflicting national standards shall
be withdrawn at the latest by March 2025.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 9773:1998.
Any feedback and questions on this document should be directed to the users’ national standards
body/national committee. A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland,
Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of
North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 9773:2024 has been approved by CEN as EN ISO 9773:2024 without any modification.

International
Standard
ISO 9773
Third edition
Plastics — Determination of
2024-09
burning behaviour of thin flexible
vertical specimens in contact with a
small flame ignition source
Plastiques — Détermination du comportement au feu
d'éprouvettes minces verticales souples au contact d'une petite
flamme comme source d'allumage
Reference number
ISO 9773:2024(en) © ISO 2024
ISO 9773:2024(en)
© ISO 2024
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
ISO 9773:2024(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Principle . 2
5 Significance of test . 2
6 Apparatus and materials . 3
7 Test specimens . 4
8 Conditioning . 6
9 Test procedures . 6
10 Expression of results . 8
11 Precision . 9
12 Test report . 9
Annex A (informative) Classification system for determining the combustibility of vertical
flexible test specimens using a 20 mm flame source .11
Bibliography .12

iii
ISO 9773:2024(en)
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 61, Plastics, Subcommittee SC 4, Burning
behaviour, in collaboration with the European Committee for Standardization (CEN) Technical Committee
CEN/TC 249, Plastics, in accordance with the Agreement on technical cooperation between ISO and CEN
(Vienna Agreement).
This third edition cancels and replaces the second edition (ISO 9773:1998), which has been technically
revised. It also incorporates the Amendment ISO 9773:1998/Amd. 1:2003.
The main changes are as follows:
— the required light level in the chamber has been added;
— informations on conditioning, laboratory and timing have been amended;
— conditioning of cotton prior to testing has been added;
— information on specimen thickness has been amended;
— information on retesting has been amended;
— mandatory information is provided throughout the document;
— normative references clause has been updated.
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 9773:2024(en)
Plastics — Determination of burning behaviour of thin
flexible vertical specimens in contact with a small flame
ignition source
1 Scope
1.1 This document specifies a small-scale laboratory screening procedure for comparing the relative
burning behaviour of vertically oriented thin and relatively flexible plastics specimens exposed to a low-
energy-level flame ignition source.
NOTE These specimens cannot be tested using method B of IEC 60695-11-10:2013 since they distort or shrink
away from the applied flame source without igniting.
1.2 This test method determines the afterflame and afterglow times of specimens.
1.3 The classification system described in Annex A is intended for quality control and the preselection of
component materials for products. The classification established by this method of test is applicable only to
the material used for the specimens.
NOTE Test results are influenced by material components, e.g. pigments, fillers, concentrations of fire retardants.
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
...