ISO INTERNATIONAL STANDARD 5821 Second edition 2009-02-01 Resistance welding Spot welding electrode caps poursoudage parpoints Reference number ISO 5821:2009(E) @ ISO 2009 T by IHS under lic itted without license from IHS Not for Resale ISO 5821:2009(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobe's licensing policy, this file may be printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In accepts no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF fle can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the file is suitable for use by IsO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT @ ISO2009 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, IsO's member body in the country of the requester. ISO copyright office Case postale 56 . CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail [email protected] Web www.iso.org Published in Switzerland "..... @ IS0 2009 - All rights reserved ed without license from IHS Not for Resale ISO 5821:2009(E) Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies (IsO member bodies). The work of preparing International Standards is normally carried out through IsO International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/lEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. rights. IsO shall not be held responsible for identifying any or all such patent rights. ISO 5821 was prepared by Technical Committee ISO/TC 44, Welding and allied processes, Subcommittee Sc 6, Resistance welding and allied mechanical joining. Thissecondeditioncancelsandreplacesthefirstedition(lSO5821:1979)whichhasbeentechnicallyrevised Requests for official interpretations of any aspect of this International Standard should be directed to the www.iso.org. ii Not for Resale