oSIST prEN 10307:2025
(Main)Non-destructive testing - Ultrasonic testing of austenitic and austenitic-ferritic stainless steels flat products of thickness equal to or greater than 6 mm (reflection method)
Non-destructive testing - Ultrasonic testing of austenitic and austenitic-ferritic stainless steels flat products of thickness equal to or greater than 6 mm (reflection method)
This document describes a method for the ultrasonic-testing of uncoated flat austenitic and austenitic-ferritic stainless steel product for internal discontinuities.
This document is applicable to flat product in nominal thickness range of 6 mm to 200 mm.
This document also defines four quality classes for the flat product body (classes S1, SA, S2 and S3) and four quality classes (E1, E2, E3, E4) for the edges (see Clause 15).
A list of equivalent terms in several European languages is given in Annex A.
Zerstörungsfreie Prüfung - Ultraschallprüfung von Flacherzeugnissen aus austenitischem und austenitisch-ferritischem nichtrostendem Stahl ab 6 mm Dicke (Reflexionsverfahren)
Dieses Dokument legt ein Verfahren für die Ultraschall-Impuls-Echo-Prüfung von unbeschichteten Flacherzeugnissen aus austenitischem und austenitisch-ferritischem nichtrostendem Stahl zur Ermittlung innerer Inhomogenitäten fest.
Dieses Dokument gilt für Flacherzeugnisse im Nenndickenbereich von 6 mm bis 200 mm.
Dieses Dokument definiert auch vier Qualitätsklassen für die Flächenprüfung (Klassen S1, SA, S2 und S3) sowie vier Qualitätsklassen für die Randzonenprüfung (E1, E2, E3 und E4) (siehe Abschnitt 15).
Anhang A enthält eine Liste gleichwertiger Begriffe in verschiedenen europäischen Sprachen.
Essais non destructifs - Contrôle par ultrasons des produits plats en acier inoxydable austénitique et austéno-ferritique d'épaisseur égale ou supérieure à 6 mm (méthode par réflexion)
Le présent document décrit une méthode de contrôle par ultrasons par réflexion des discontinuités internes des produits plats en acier inoxydable austénitique et austéno-ferritique non revêtus.
Il est applicable aux produits plats d'épaisseur nominale supérieure ou égale à 6 mm et inférieure ou égale à 200 mm.
Le présent document définit également quatre classes de qualité pour le corps du produit plat (classes S1, SA, S2 et S3) et quatre classes de qualité (E1, E2, E3, E4) pour les périphéries (voir l'Article 15).
Une liste des termes équivalents en plusieurs langues européennes es donnée à l’Annexe A.
Neporušitvene preiskave - Ultrazvočno preskušanje avstenitnih in avstenitno-feritnih nerjavnih ploščatih jeklenih izdelkov debelin, ki so enake ali večje od 6 mm (odbojna metoda)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-december-2025
Neporušitvene preiskave - Ultrazvočno preskušanje avstenitnih in avstenitno-
feritnih nerjavnih ploščatih jeklenih izdelkov debelin, ki so enake ali večje od 6 mm
(odbojna metoda)
Non-destructive testing - Ultrasonic testing of austenitic and austenitic-ferritic stainless
steels flat products of thickness equal to or greater than 6 mm (reflection method)
Zerstörungsfreie Prüfung - Ultraschallprüfung von Flacherzeugnissen aus
austenitischem und austenitisch-ferritischem nichtrostendem Stahl ab 6 mm Dicke
(Reflexionsverfahren)
Essais non destructifs - Contrôle par ultrasons des produits plats en acier inoxydable
austénitique et austéno-ferritique d'épaisseur égale ou supérieure à 6 mm (méthode par
réflexion)
Ta slovenski standard je istoveten z: prEN 10307
ICS:
77.040.20 Neporušitveno preskušanje Non-destructive testing of
kovin metals
77.140.50 Ploščati jekleni izdelki in Flat steel products and semi-
polizdelki products
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2025
ICS 77.040.20 Will supersede EN 10307:2001
English Version
Non-destructive testing - Ultrasonic testing of austenitic
and austenitic-ferritic stainless steels flat products of
thickness equal to or greater than 6 mm (reflection
method)
Essais non destructifs - Contrôle par ultrasons des Zerstörungsfreie Prüfung - Ultraschallprüfung von
produits plats en acier inoxydable austénitique et Flacherzeugnissen aus austenitischem und
austéno-ferritique d'épaisseur égale ou supérieure à 6 austenitisch-ferritischem nichtrostendem Stahl ab 6
mm (méthode par réflexion) mm Dicke (Reflexionsverfahren)
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 459/SC 1.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
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. prEN 10307:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 5
4 Items for agreements . 5
5 Principle . 6
6 Procedure . 6
7 Personnel qualification . 7
8 Ultrasonic test equipment . 7
8.1 Instrument. 7
8.2 Probe . 8
8.2.1 General. 8
8.2.2 Nominal frequency . 8
8.2.3 Type of probes . 8
8.3 Standard blocks . 8
8.4 Reference blocks or plates . 8
8.5 Couplant . 9
9 Routine checking . 9
10 Stage of testing . 9
11 Surface condition . 9
12 Sensitivity setting . 9
13 Scanning . 10
13.1 General. 10
13.2 Scanning speed . 10
13.3 Testing of the flat product body . 10
13.3.1 Quality class S S flat product . 10
1, A
13.3.2 Quality class S and S flat product . 11
2 3
13.4 Testing of the flat product edges . 11
14 Evaluation of discontinuities . 11
14.1 General. 11
14.2 Testing of flat product body . 11
14.2.1 Testing with dual-transducer probes . 11
14.2.2 Testing with single transducer probes . 12
14.3 Testing the edges . 12
15 Recording level and acceptance criteria . 12
16 Test report . 15
Annex A (informative) List of equivalent terms in several European languages . 17
Bibliography . 18
European foreword
This document (prEN 10307:2025) has been prepared by Technical Committee CEN/TC 459/SC 1 “Test
methods for steel (other than chemical analysis)”, the secretariat of which is held by AFNOR.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 10307:2001.
— The Scope was modified;
— Clause 2: Normative References has been updated;
— Definition 3.5 was updated;
— Clause 5: Principle was developed;
— A new quality class for the flat product body (S ) was added;
A
— The method of settings in Clause 12 was updated;
— The scanning speed in 13.2 was changed to 500 mm/s;
— Some elements while testing the edges in 14.2 were modified;
— Values of Table 5 and Table 6 – Acceptance criteria with dual/single-transducer probes were
updated.
1 Scope
This document describes a method for the ultrasonic-testing of uncoated flat austenitic and austenitic-
ferritic stainless steel product for internal discontinuities.
This document is applicable to flat product in nominal thickness range of 6 mm to 200 mm.
This document also defines four quality classes for the flat product body (classes S , S , S and S ) and
1 A 2 3
four quality classes (E , E , E , E ) for the edges (see Clause 15).
1 2 3 4
A list of equivalent terms in several European languages is given in Annex A.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN ISO 9712, Non-destructive testing — Qualification and certification of NDT personnel (ISO 9712)
EN ISO 16810, Non-destructive testing — Ultrasonic testing — General principles (ISO 16810)
EN ISO 16811, Non-destructive testing — Ultrasonic testing — Sensitivity and range setting (ISO 16811)
EN ISO 16827, Non-destructive testing — Ultrasonic testing — Characterization and sizing of
discontinuities (ISO 16827)
EN 1330-1, Non destructive testing — Terminology — Part 1: List of general terms
EN 1330-2, Non destructive testing — Terminology — Part 2: Terms common to the non-destructive testing
methods
EN ISO 5577, Non-destructive testing — Ultrasonic testing — Vocabulary (ISO 5577)
EN ISO 2400, Non-destructive testing — Ultrasonic testing — Specification for standard block No. 1
(ISO 2400)
EN ISO 18563-1, Non-destructive testing — Characterization and verification of ultrasonic phased array
equipment — Part 1: Instruments (ISO 18563-1)
EN ISO 18563-2, Non-destructive testing — Characterization and verification of ultrasonic phased array
equipment — Part 2: Array probes (ISO 18563-2)
EN ISO 18563-3, Non-destructive testing — Characterization and verification of ultrasonic phased array
equipment — Part 3: Complete systems (ISO 18563-3)
EN ISO 22232-1, Non-destructive testing — Characterization and verification of ultrasonic test
equipment — Part 1: Instruments (ISO 22232-1)
EN ISO 22232-2, Non-destructive testing — Characterization and verification of ultrasonic test
equipment — Part 2: Probes (ISO 22232-2)
EN ISO 22232-3, Non-destructive testing — Characterization and verification of ultrasonic test
equipment — Part 3: Combined equipment (ISO 22232-3)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1330-1, EN 1330-2, EN ISO 5577
and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp/
— IEC Electropedia: available at https://www.electropedia.org/
3.1
internal discontinuity
any imperfection lying within the thickness of the flat product, e.g planar or laminar imperfection, single-
plane or multi-plane inclusion bands or clusters
Note 1 to entry: It is referred to in the text as discontinuity.
3.2
defect
internal discontinuity, i.e. exceeding the specified maximum size or population density limits
3.3
population density
number of individual internal discontinuities of a size greater than a specified minimum size and less
than a specified maximum size per specified area of body or length of edge zone
3.4
manual testing
testing by an operator applying an ultrasonic probe, or probes, to the flat product surface, manually
execut
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