EN IS0 16946 EUROPEANSTANDARD NORME EUROPEENNE EUROPAISCHE NORM June 2024 ICS 19.100 Supersedes EN IS0 16946:2017 English Version Non-destructive testing - Ultrasonic testing - Specification for a step wedge standard block (IS0 16946:2024) Essais non destructifs - Controle par ultrasons - Zerstorungsfreie Prifung - Ultraschallprifung - Spécifications relatives au bloc étalon a gradins (ISO Beschreibung des Stufenkeil-Standardkorpers (ISO 16946:2024) 16946:2024) This European Standard was approved by CEN on 25 May 2024. CENmembers areboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthis European Standard the status of a national standard without any alteration.Up-to-datelists 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 Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, 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, Tiurkiye and United Kingdom. ce EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEEUROPEENDE NORMALISATION EUROPAISCHES KOMITEE FUR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels @2024CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 16946:2024 E worldwide for CEN national Members. EN IS0 16946:2024 (E) Contents Page European foreword.... 2 EN IS0 16946:2024 (E) European foreword This document (EN IS0 16946:2024) has been prepared by Technical Committee IS0/TC 135 "Non 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of an identical text or by endorsement, at the latest by December 2024, and conflicting national standards shall be withdrawn at the latest by December 2024. 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 document supersedes EN IS0 16946:2017. Any feedback and questions on this document should be directed to the users' national standards body/national committee. A complete listing of these bodies can be found on the CEN website. 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, Turkiye and the United Kingdom. Endorsement notice The text of IS0 16946:2024 has been approved by CEN as EN IS0 16946:2024 without any modification.