ISO INTERNATIONAL STANDARD 4589-3 Secondedition 2017-04 Plastics Determination of burning behaviour by oxygen index - Part 3: Elevated-temperature test Plastiques - Détermination du comportement au feu au moyen de I'indice d'oxygene - Partie 3: Essai a haute température Reference number IS0 4589-3:2017(E) International Organization for Standardization ee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 @ IS0 2017 mitted without license from IHS IS0 4589-3:2017(E) COPYRIGHT PROTECTED DOCUMENT @ IS0 2017, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form 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 copyrightoffice Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 copyright@iso.org www.iso.org Licensee-ZHEJIANG INST OF STANDARDIZzRoISQ7 - All rights reserved Not for Resale, 2017/6/28 01:05:50 networking permited without license from IHS IS0 4589-3:2017(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references ..1 3 Terms and definitions ..1 4 Principle ..2 5 Apparatus .2 5.1 Arrangement .2 5.2 Test chimney 2 5.3 Test specimen holder 3 5.4 Gas supplies .3 5.5 Gas control devices. .3 5.6 Oxygen analyser. .3 5.7 Flame igniter 4 5.8 Timing device ..4 5.9 Fume extraction system .4 6 Calibration and maintenance of equipment ..4 7 Preparation of test specimens .4 7.1 Sampling. ..4 7.2 Test specimen dimensions and preparation .4 7.3 Marking of test pieces. .4 7.4 Conditioning. .4 8 Procedure .5 8.1 Setting up the apparatus and test specimen .5 8.2 Igniting the test specimen. .5 8.3 Assessing burning behaviour 5 8.4 Selecting successive volume fractions of oxygen, .5 8.5 Determining the preliminary volume fraction of oxygen .5 8.6 Volume fraction of oxygen changes .6 9 Calculations and expression of results. .6 10 Comparison with a specified minimum value of the temperature index at a specified temperature (short procedure) .6 11 Precision .6 12 Test report .6 Annex A (normative) Measurement of flammability temperature (FT) ..12 Annex B (informative) Interlaboratory test data on flammabilitytemperature ..15 Annex C (informative) Typical test results sheet. ..16 Bibliography .19 ii icenSee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 without license from IHS