ISO INTERNATIONAL STANDARD 24213 Secondedition 2017-07 Metallic materials Sheet and strip Method for springback evaluation in stretch bending Matériaux métalliques - Toles et bandes - Méthode d'évaluation du retour élastique lors d'un cintrage sous traction Reference number ISO 24213:2017(E) International Organization for Standardization @ IS0 2017 Not for Resale, 2017/8/21 01:03:31 ee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 No reproduction or networking permitted without license from IHS IS0 24213:2017(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 or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior 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 Licensee-ZHEJIANG INST OF STANDARDIZAISQ 017 - All rights reserVed networking permited without license from IHS IS0 24213:2017(E) Contents Page Foreword .iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Symbols and designations .3 5 Principle 6 Test apparatus. ..3 7 Test piece .5 8 Procedure ..5 9 Test report. ..6 Annex A (normative) Method for calculating blank holding pressure ..7 Annex B (normative) Method for calculating nominal tensile stress. .9 Annex C (normative) Device for determining radius of curvature using a dial gauge ..10 Bibliography. .11 ii Licensee=ZHEJIANG INST OF STANDARDIZATION C1 5956617 vithout license from IHS