TECHNICAL ISO/TR REPORT 25901-4 First edition 2016-03-15 Welding and allied processes - Vocabulary - Part 4: Arc welding Soudage et techniques connexes - Vocabulaire - Partie 4:Soudagea I'arc Reference number X IS0/TR 25901-4:2016(E) ISO @IS02016 IS0/TR 25901-4:2016(E) Contents Page Foreword .iv 1 Scope 1 2 Terms and definitions 1 2.1 Terms related to welding procedures 1 2.2 Terms related to welding execution .2 2.3 Terms related to welding process characteristics. .3 2.4 Terms related to welding consumables. .6 2.5 Terms related to characteristics of welding power source .8 2.6 Terms related to welding equipment .8 Annex A (informative) Alphabetical index of English terms with French and German translations. .10 Annex B (informative) Alphabetical index of arc welding related terms defined in Is0 857- 1:1998 that were not included in this part of IS0/TR 25901 .14 Bibliography 18 @ IS0 2016 - All rights reserved iii IS0/TR 25901-4:2016(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 technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with IsO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. The procedures used to develop this document and those intended for its further maintenance are described in the Iso/IEc Directives, Part 1. In particular the different approval criteria needed for the different types of IsO documents should be noted. This document was drafted in accordance with the editorial rules of the ISo/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. IsO shall not be held responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISo list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is information given for the convenience of users and does not constitute an endorsement. For an explanation on the meaning of Iso specific terms and expressions related to conformity assessment, as well as information about IsO's adherence to the WTO principles in the Technical Barriers to Trade (TBT), see the following URL: Foreword - Supplementary information The committee responsible for this document is ISo/TC 44, Welding and allied processes, Subcommittee SC 7, Representation and terms, in collaboration with Commission VI, Terminology of the International Institute of Welding (IIW). This first edition of IS0/TR 25901-3, together with the other parts of IS0/TR 25901, cancels and replaces IS0 857-—1:1998 and IS0/TR25901:2007, ofwhich it constitutes a revision. ISO/TR 25901 consists of the following parts, under the general title Welding and allied processes - Vocabulary: Part 1: General terms [Technical Report] Part 3: Welding processes [Technical Report] Part 4: Arc welding [Technical Report] The following parts are under preparation: Part 2: Safety and health [Technical Report] Friction welding is to form the subject of a future part 5. Requests for official interpretations of any aspect of this International Standard should be directed to the Secretariat of ISO/TC 44/SC 7 via your national standards body. A complete listing of these bodies can be found at www.iso.org. iv @ IS0 2016 - All rights reserved