ISO INTERNATIONAL STANDARD 21028-1 Second edition 2016-09-15 Cryogenic vessels Toughness requirements for materials at cryogenic temperature Part 1: Temperatures below -8o °C Récipients cryogeniques - Exigences de ténacite pour les materiaux a température cryogénique Partie 1:Températures inférieures a -80 °C Referencenumber IS0 21028-1:2016(E) so @ IS0 2016 IS0 21028-1:2016(E) COPYRIGHTPROTECTEDDOCUMENT @ IS0 2016, Published in Switzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form orbyanymeans,electronicormechanical,includingphotocopying,orpostingontheinternetoranintranet,withoutprior 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 i IS02016-Allrightsreserved IS0 21028-1:2016(E) Contents Page Foreword iv Introduction V 1 Scope. 1 2 Normative references 1 3 Terms and definitions 4 Toughness requirements 4.1 General 4.2 Steels.. 4.3 Aluminium or aluminium alloys 2 4.4 Copper or copper alloys. 2 4.5 Testmethods. 2 4.5.1 General. 2 4.5.2 Test piece locations for plates 3 4.5.3 Test piece locations for welds and heat-affected zones 3 4.6 Acceptance criteria 5 4.6.1 For impact energy. 5 4.6.2 For lateral expansion. 5 Bibliography 7 @ IS0 2016 - All rights reserved iii