ISO INTERNATIONAL STANDARD 4491-2 Third edition 2023-04 Metallic powders Determination of oxygen content by reduction methods Part 2: Loss of mass on hydrogen reduction (hydrogen loss) Poudres métalliques - Dosage de I'oxygene par les méthodes de réduction Partie 2: Perte de masse par reduction dans I'hydrogene (perte dans I'hydrogene) Reference number IS0 4491-2:2023(E) ISO @ ISO 2023 IS0 4491-2:2023(E) COPYRIGHTPROTECTED DOCUMENT @IS02023 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 or ISoO's member body in the country of the requester. ISO copyright office CP 40i : Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone: +41 22 749 01 11 Email:[email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2023- All rights reserved