SIST EN ISO 17635:2025
(Main)Non-destructive testing of welds - General rules for metallic materials (ISO 17635:2025)
Non-destructive testing of welds - General rules for metallic materials (ISO 17635:2025)
This document gives guidelines for the choice of non-destructive testing (NDT) methods for welds in metals and for the evaluation of the results for quality control purposes, based on quality requirements, material, weld thickness, welding process and extent of testing.
This document also specifies general rules and standards to be applied to the different types of testing, for the selection of the method, the techniques and the acceptance levels.
Acceptance levels cannot be a direct interpretation of the quality levels defined in ISO 5817 or ISO 10042. They are linked to the overall quality of the produced batch of welds.
The requirements specified in this document for acceptance levels for NDT conform with quality levels stated in ISO 5817 or ISO 10042 (moderate, intermediate, stringent) only on a general basis and not in detail for each indication.
Annex A gives correlations between quality levels, testing levels and acceptance levels for specific testing techniques.
Annex B gives an overview on specific testing techniques of standards linked to quality levels, acceptance levels and testing methods.
Zerstörungsfreie Prüfung von Schweißverbindungen - Allgemeine Regeln für metallische Werkstoffe (ISO 17635:2025)
Dieses Dokument gibt Leitlinien für die Auswahl zerstörungsfreier Prüfverfahren (ZfP) (NDT, en: non-destructive testing) für Schweißverbindungen in Metallen und für die Bewertung der Ergebnisse zum Zwecke der Qualitätskontrolle auf der Grundlage von Qualitätsanforderungen, Werkstoff, Schweißnahtdicke, Schweißprozess und Prüfumfang.
Dieses Dokument legt außerdem allgemeine Regeln und Normen fest, die auf die verschiedenen Prüfarten, für die Auswahl des Verfahrens, der Techniken und die Zulässigkeitsgrenzen anzuwenden sind.
Zulässigkeitsgrenzen können keine direkte Auslegung der Bewertungsgruppen nach ISO 5817 oder ISO 10042 sein. Sie stehen mit der Gesamtqualität der hergestellten Schweißnahtchargen im Zusammenhang.
Die in diesem Dokument festgelegten Anforderungen an die Zulässigkeitsgrenzen für die zerstörungsfreie Prüfung entsprechen den in ISO 5817 oder ISO 10042 genannten Bewertungsgruppen (mäßig, mittel, hoch) nur allgemein und nicht im Einzelnen für jede Anzeige.
In Anhang A sind die Zusammenhänge zwischen Bewertungsgruppen, Prüfklassen und Zulässigkeitsgrenzen für spezifische Prüftechniken angegeben.
Anhang B gibt einen Überblick über die Normen im Zusammenhang mit den Bewertungsgruppen, Zulässigkeitsgrenzen und Prüfverfahren für spezielle Prüftechniken.
Essais non destructifs des assemblages soudés - Règles générales pour les matériaux métalliques (ISO 17635:2025)
Le présent document donne des lignes directrices pour le choix des méthodes d'essai non destructif (END) des assemblages soudés dans les métaux et pour l'évaluation des résultats dans le cadre du contrôle qualité, en se fondant sur les exigences concernant la qualité, le matériau, l'épaisseur de soudure, le procédé de soudage et l'étendue de l'essai.
Le présent document spécifie également les règles générales et les normes applicables aux différents types d'essais, du point de vue de la méthodologie, des techniques et des niveaux d'acceptation.
Les niveaux d'acceptation ne peuvent pas être une interprétation directe des niveaux de qualité définis dans l'ISO 5817 ou l'ISO 10042. Ils sont liés à la qualité globale du lot d'assemblages soudés produit.
Les exigences relatives aux niveaux d'acceptation pour les END ne sont corrélées aux niveaux de qualité définis dans l'ISO 5817 ou l'ISO 10042 (modérés, moyens et élevés) que sur une base générale, et non pas en détail pour chaque indication.
L'Annexe A établit une corrélation entre les niveaux de qualité, les niveaux d'examen et les niveaux d'acceptation relatifs aux techniques spécifiques d'essai.
L'Annexe B donne une vue d'ensemble des techniques spécifiques d'essai de normes relatives aux niveaux de qualité, aux niveaux d'acceptation et aux méthodes d'essai.
Neporušitveno preskušanje zvarnih spojev - Splošna pravila za kovinske materiale (ISO 17635:2025)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2025
Nadomešča:
SIST EN ISO 17635:2017
Neporušitveno preskušanje zvarnih spojev - Splošna pravila za kovinske materiale
(ISO 17635:2025)
Non-destructive testing of welds - General rules for metallic materials (ISO 17635:2025)
Zerstörungsfreie Prüfung von Schweißverbindungen - Allgemeine Regeln für metallische
Werkstoffe (ISO 17635:2025)
Essais non destructifs des assemblages soudés - Règles générales pour les matériaux
métalliques (ISO 17635:2025)
Ta slovenski standard je istoveten z: EN ISO 17635:2025
ICS:
25.160.40 Varjeni spoji in vari Welded joints and welds
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN ISO 17635
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2025
EUROPÄISCHE NORM
ICS 25.160.40 Supersedes EN ISO 17635:2016
English Version
Non-destructive testing of welds - General rules for
metallic materials (ISO 17635:2025)
Essais non destructifs des assemblages soudés - Règles Zerstörungsfreie Prüfung von Schweißverbindungen -
générales pour les matériaux métalliques (ISO Allgemeine Regeln für metallische Werkstoffe (ISO
17635:2025) 17635:2025)
This European Standard was approved by CEN on 9 February 2025.
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.
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, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 17635:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
European foreword
This document (EN ISO 17635:2025) has been prepared by Technical Committee ISO/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 October 2025, and conflicting national standards shall
be withdrawn at the latest by October 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 document supersedes EN ISO 17635:2016.
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,
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, Türkiye and the
United Kingdom.
Endorsement notice
The text of ISO 17635:2025 has been approved by CEN as EN ISO 17635:2025 without any modification.
International
Standard
ISO 17635
Fourth edition
Non-destructive testing of welds —
2025-04
General rules for metallic materials
Essais non destructifs des assemblages soudés — Règles générales
pour les matériaux métalliques
Reference number
ISO 17635:2025(en) © ISO 2025
ISO 17635:2025(en)
All rights reserved.
ISO publications, in their entirety or in fragments, are owned by ISO. They are licensed, not sold, and are subject to the terms and
conditions set forth in the ISO End Customer License Agreement, the License Agreement of the relevant ISO member body, or
those of authorized third-party distributors.
Unless otherwise specified or required for its implementation, no part of this ISO publication may be reproduced, distributed,
modified, or used in any form or by any means, electronic or mechanical, including photocopying, scanning, recording, or posting
on any intranet, internet, or other digital platforms, without the prior written permission of ISO, the relevant ISO member body
or an authorized third-party distributor.
This publication shall not be disclosed to third parties, and its use is strictly limited to the license type and purpose specified in
the applicable license grant. Unauthorized reproduction, distribution, or use beyond the granted license is prohibited and may
result in legal action.
ISO copyright office
CP 401 • 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
ISO 17635:2025(en)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Abbreviated terms . 3
5 Limitations . 3
5.1 Stage of manufacture .3
5.2 Extent of testing .4
5.3 Materials .4
6 Personnel qualification . 4
7 Testing organization . 4
8 Documentation . 4
8.1 Documentation prior to testing .4
8.1.1 General .4
8.1.2 Written procedure .4
8.1.3 Testing plan .4
8.2 Documentation of testing .5
8.2.1 Documentation of individual testing .5
8.2.2 Test report .5
9 Selection of testing method(s) . 5
9.1 General .5
9.2 Butt- and T-joints with full penetration .6
9.3 Butt- and T-joints without full penetration and fillet welds .6
10 Performance of testing . 7
10.1 Determination of standards to be applied .7
10.2 Conditions for testing .7
10.3 Time of testing .7
10.4 Non-acceptable indications .7
10.5 Repaired welds .7
Annex A (normative) Rules and standards to be applied . 8
Annex B (informative) Overview of welding quality standards and NDT-standards .12
Annex C (informative) Non-acceptable indications in case of partial testing . 14
Bibliography .15
iii
ISO 17635:2025(en)
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 document 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).
ISO draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). ISO takes no position concerning the evidence, validity
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.