ISO INTERNATIONAL STANDARD 636 Fifth edition 2017-06 Welding consumables Rods, wires and deposits for tungsten inert gas welding of non-alloy and fine-grain steels Classification Produits consommables pour le soudage -Baguettes etfils pour dépots par soudage TIG des aciers non alliés et des aciers a grains fins -Classification Reference number IS0 636:2017(E) so International Organization for Standardization ZHEJIANG INST OF STANDARDIZATION C1 5956617 @ IS0 2017 Not for Resale, 2017/8/21 02:04:53 ed without license from IHS IS0 636:2017(E) COPYRIGHTPROTECTEDDOCUMENT IS02017,PublishedinSwitzerland 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 copyright@iso.org www.iso.org Intenationaibr Prganization for Standardization icensee-ZHEJIANG INST OF STANDARDIZAoISQ s.7 -All rights reserved Not for Resale, 2017/8/21 02:04:53 etworking permitted without license from IHS IS0 636:2017(E) Contents Page Foreword ..iv Introduction. .. 1 Scope. ..1 2 Normative references 3 Terms and definitions 4 Classification .2 4.1 General .2 5 Symbols and requirements .2 5.1 Symbol for the product/process. 2 5.2 Symbol for strength and elongation of all-weld metal .3 5.3 Symbol for impact properties of all-weld metal. ..4 5.4 Symbol for the chemical composition of rods or wires .4 6 Mechanical tests. .9 6.1 Preheating and interpass temperatures 6.2 Welding conditions and pass sequence. .10 6.3 PWHT condition. .10 7 Chemical analysis .10 8 Rounding procedure ..11 9 Retesting ..11 10 Technical delivery conditions ..11 11 Examples of designation ..11 Bibliography .13 iii =ZHEJIANG INST OF STANDARDIZATION C1 5956617 vided by IHS under lic vithout license from IHS Not for Resale, 2017/8/21 02:04:53