ISO INTERNATIONAL STANDARD 7539-9 Second edition 2021-08 Corrosion of metals and alloys ： Stress corrosion testing Part 9: Preparation and use of pre-cracked specimens for tests under rising load or rising displacement Corrosion des métaux et alliages Essais de corrosion sous contrainte Partie 9: Preparation et utilisation des éprouvettes préfissurées pour essais sous charge croissante ou sous déplacement croissant Reference number IS0 7539-9:2021(E) os1 @ IS0 2021 IS0 7539-9:2021(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2021 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 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: [email protected] Website: www.iso.org Published in Switzerland ii @ IS0 2021 - All rights reserved