ISO INTERNATIONAL STANDARD 25239-4 Second edition 2020-06 Friction stir welding Aluminium Part 4: Specification and qualification of welding procedures Soudageparfriction-malaxageAluminium- Partie 4: Descriptif et qualification des modes operatoires de soudage Reference number IS0 25239-4:2020(E) ISO iiw @IS02020 IS025239-4:2020(E) COPYRIGHTPROTECTEDDOCUMENT ?ISO2020 All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may 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: +41 22 749 01 11 Email: copyright@iso.org Website: www.iso.org Published in Switzerland ii IS02020-Allrights reserved IS025239-4:2020(E) Contents Page Foreword iv Introduction V 1 Scope. .1 2 Normativereferences .1 3 Terms and definitions .1 4 Developmentandqualification ofweldingprocedures .2 4.1 2 General 4.2 Technical content ofa pWPs 2 5 Qualification based on a welding procedure test 4 5.1 General 4 5.2 Test pieces. 4 5.2.1 Shape and dimensions of test pieces 4 5.2.2 Welding oftest pieces 6 5.3 Examinationandtestingoftestpieces 6 5.3.1 Extent oftesting 6 5.3.2 Visual testing and acceptancelevels 7 5.3.3 Destructive tests. 7 5.3.4 Re-testing .12 5.4 Range of qualification .12 5.4.1 General. 12 5.4.2 Related to thefabricator. 12 5.4.3 Other variables .12 5.5 Welding procedure qualification record 12 6 Qualification based on pre-production welding test .13 6.1 General. .13 6.2 Testpieces 13 6.3 .13 Examinationandtestingoftestpieces. .13 6.4 Range of qualification 6.5 Weldingprocedure qualification record 13 Annex A (informative) Example of a form for preliminary welding procedure specification (pWPS)andweldingprocedurespecification (WPS) .14 AnnexB (informative)Non-destructivetesting .15 AnnexC(informative)HammerS-bendtestoflapwelds ..16 Annex D (informative) Example welding procedure qualification record form (WPQR) ..18 Bibliography .22 @IS0 2020 - All rights reserved iii