4851903 0738299 920 STD.IS0 9773-ENGL 1998 INTERNATIONAL ISO STANDARD 9773 Second edition 1998-03-01 Plastics - Determination of burning behaviour of thin flexible vertical specimens in contact with a small-flame ignition source Plastiques -- Determination du comportement au feu d'éprouvettes minces verticales souples au contact d'une petite flamme comme source d'allumage This material is reproduced from Iso documents under international Organization for Standardization (ISO) Copyright License number tHS/ICC/1996.Not for resale. No part or otherwise, except as alowed in the copyright law of the country of use, or with the prior wrtten consent ofSO (Case postale 56, 1211 Geneva 20, Switzerland, Fax +41 227341079),IHSortheISo Licensor'smembers. ISO Reference number ISO 9773:1998(E) CopyrightInternational Organization for Standardization Nproductioneorking pemited ithout icenefomIH Not for Resale 9773-EnGl STP.ISO 1998 E06tsah O0E9E20 472 ISO 9773:1998(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 closeiy with the International Electrotechnical Commission (iEC) on all matters of electrotechnical standardization. Draft international Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International a vote. tSO/TC 61, Plastics, Subcommittee SC 4, Burning behaviour. This second edition cancels and replaces the first edition (IsO 9773:1990) which has been technically revised. Annex A of this International Standard is for information only. C 1SO1998 All rights reserved.Unless otherwise specified,nopartof this publication maybe reproduced microfilm, without permission in writing from the publisher. International Organization for Standardization Case postale 56 . CH-1211 Geneve 20 . Switzerland Internet [email protected] X.400 C=ch;a=400net; p=iso; 0=isocs; S=central Printed in Switzeriand ii Copyright Intemational Organization for Standardization efrom IHS Not for Resale STD.IS0 9773-ENGL 1998 4851903 0738301309 INTERNATIONAL STANDARD ISO ISO 9773:1998(E) Plastics - Determination of burning behaviour of thin flexible vertical specimens in contact with a small-flame ignition source Scope This International Standard 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. These specimens cannot be tested using method B of ISO 1210 since they distort or shrink away from the applied flame source without igniting. 1.2 This method of test 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 1 - Test results are influenced by material components, e.g. pigments, fllers, fire-retardant concentrations. 2. Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and 1SO maintain registers of currently vali