ISO INTERNATIONAL STANDARD 6848 Third edition 2015-08-15 Arc welding and cutting Nonconsumable tungsten electrodes Classification Soudage et coupage a I'arc - Electrodes non consommables en tungstene - Classification Reference number ISO 6848:2015(E) SO International Organization for Standardization @ IS0 2015 dardization 5956617 vided by IHS under I Not for Resale, 2015/11/11 08:45:37 itted without license from IHS IS0 6848:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS0 2015, 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. IsOcopyrightoffice 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 PrganizationforStandardization etworking permitted without license from IHS IS0 6848:2015(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope. ..1 2 Normative references 3 Classification ..1 4 Symbols and requirements. 4.1 Symbol for the product/process .1 4.2 Symbol for the chemical composition .1 5 Chemical analysis. ..1 6 Retests. ..1 7 Marking 8 Standard sizes and tolerances .3 8.1 Electrode diameters ..3 8.2 Electrode lengths. .4 9 Electrode shape and condition .5 9.1 Electrode straightness .5 9.2 Electrode finish .5 9.3 Electrode quality .5 10 Rounding procedure .5 11 Marking and packaging ..5 11.1 Marking .5 11.2 Packaging .6 12 Classification examples .6 Annex A (informative) Conditions of use 7 iii vided by IHS under vithoutlicense from IHS