ISO INTERNATIONAL STANDARD 18275 Third edition 2018-08 Welding consumables Covered electrodes for manual metal arc welding of high-strength steels Classification Produits consommables pour le soudage -Electrodes enrobées pour le soudage manuel a I'arc des aciers a haute résistance Classification Reference number IS0 18275:2018(E) ISO @ IS0 2018 Provided by IHS Markit under license with ANSi IS0 18275:2018(E) COPYRIGHTPROTECTEDDOCUMENT @IS02018 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 40i: Ch. de Blandonnet 8 CH-1214 Vernier, Geneva Phone:+4122 749 0111 Fax: +41 22 749 09 47 Email: [email protected] Website: www.iso.org Published in Switzerland ii @IS0 2018 -All rights reserved Provided by IHS Markit under iense withANS IS0 18275:2018(E) Contents Page Foreword Introduction 1 Scope. 1 2 Normative references. .1 3 Terms and definitions 4 Classification 4.1 General 4.2 Compulsory and optional sections 5 Symbols and requirements 5.1 Symbol for the product/process 5.2 Symbol for tensile properties of all-weld metal, 5.3 Symbol for impact properties of all-weld metal. 5.4 Symbolforchemicalcompositionofall-weldmetal 5.5 Symbol for type of electrode covering... 5.6 Symbol for condition of post-weld heat treatment of all-weld metal 8 5.7 Symbol for electrode efficiency and type of current.. 5.8 Symbol for welding position. 5.9 Symbol for diffusible hydrogen content of deposited metal. 10 5.10 Mechanical property and composition requirements 10 6 Mechanical property tests . .16 6.1 General. .16 6.2 Preheating and interpass temperatures. 16 6.3 Pass sequence 7 Chemical analysis .16 8 Rounding procedure. .17 9 Retests .17 10 Technical delivery conditions. .17 11 Examples of designation. 17 Annex A (informative) Classification systems. .20 Annex B (informative) Description of types of electrode covering - Classification by yield strength and 47 J impact energy. .23 Annex C (informative) Description of types of electrode covering - Classification by tensile strength and 27 J impact energy.. 24 Annex D (informative) Notes on diffusible hydrogen: 26 Annex E (informative) Description of chemical composition symbols - Classification by yield strength and 47 J impact energy. 27 Annex F (informative) Description of chemical composition symbols - Classification by tensile strength and 27 J impact energy. 28 Bibliography. 29 @ IS0 2018 - All rights reserved ili Provided by IHS Markit under license with ANSI