ISO INTERNATIONAL STANDARD 4496 Secondedition 2017-07 Metallic powders Determination of acid-insoluble content in iron, copper, tin and bronze powders Poudres métalliques Détermination de la teneur en insolubles dans les acides pour les poudres de fer, de cuivre, d'etain et de bronze Reference number IS0 4496:2017(E) osi International Organization for Standardization @ IS0 2017 nitted without license from IHS IS0 4496:2017(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 copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel. +41 22 749 01 11 Fax +41 22 749 09 47 [email protected] www.iso.org Internatinir DrganizationforStandardization @ IS0 2017 - All rights reserved No reproduction or networking permited without license from IHS IS0 4496:2017(E) Contents Page Foreword ..iv 1 Scope .1 2 Normative references 3 Terms and definitions 4 Field of application 5 Reagents ..1 6 Equipment ..2 7 Sampling. ..2 7.1 Number of test portions. ..2 7.2 Mass of test portion .2 8 Procedure. ..3 8.1 Ironpowder .3 8.2 Copper, tin and bronze powders. .3 9 Expression of results ..4 9.1 Calculation of acid-insoluble content. .4 9.2 Precision. ..4 9.3 Permissibledifference .4 9.4 Meanvalue 10 Test report ..4 Bibliography ii vided by IHS under I se with ISt ed without license from IHS