EN ISO 636 EUROPEANSTANDARD NORME EUROPEENNE EUROPAISCHE NORM October 2024 ICS25.160.20 Supersedes EN IS0 636:2017 English Version Welding consumables - Rods, wires and deposits for tungsten inert gas welding of non-alloy and fine-grain steels-Classification (Is0 636:2024) Produits consommables pour le soudage - Baguettes, Schweifszusatze - Stabe, Drahte und Schweifsgut zum fils et depots pour soudage TIG des aciers non alliés et Wolfram-Inertgasschweifsen von unlegierten Stahlen des aciers a grains fins - Classification (IS0 636:2024) und Feinkornstahlen - Einteilung (IS0 636:2024) This European Standard was approved by CEN on 14 June 2024. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkiye and United Kingdom. cen EUROPEAN COMMITTEE FOR STANDARDIZATION COMITE EUROPEEN DE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG CEN-CENELECManagement Centre:RuedelaScience23,B-1040Brussels @2024CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 636:2024 E worldwide for CEN national Members. EN IS0 636:2024 (E) Contents Page European foreword... 2 EN IS0 636:2024 (E) European foreword This document (EN IS0 636:2024) has been prepared by Technical Committee IS0/TC 44 "Welding and allied processes" in collaboration with Technical Committee CEN/TC 121 “"Welding and allied processes"the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2025, and conflicting national standards shall be withdrawn at the latest by April 2025. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights. This documentsupersedes ENIS0 636:2017. Any feedback and questions on this document should be directed to the users' national standards body/national committee.Acompletelisting ofthesebodies canbefoundontheCENwebsite. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Tirkiye and the United Kingdom. Endorsement notice ThetextofIS0636:2024hasbeenapprovedbyCENasENIS0636:2024withoutanymodification 3