SIST EN 12680-1:2026
(Main)Founding - Ultrasonic testing - Part 1: Steel castings for general purposes
Founding - Ultrasonic testing - Part 1: Steel castings for general purposes
This document specifies the requirements for the ultrasonic testing of steel castings (with ferritic structure) for general purposes and the methods for determining internal discontinuities by the pulse-echo technique.
This document is applicable to the ultrasonic testing of steel castings which have usually received a grain refining heat treatment and which have wall thicknesses up to and including 600 mm.
For greater wall thicknesses, special agreements are applicable with respect to test procedure and recording levels.
This document does not apply to austenitic steels and joint welds. For highly stressed components EN 12680-2 is applicable.
Gießereiwesen - Ultraschallprüfung - Teil 1: Stahlgussstücke für allgemeine Verwendung
Dieses Dokument legt die Anforderungen an die Ultraschallprüfung von Stahlguss für allgemeine Verwendung (mit ferritischem Gefüge) und die Verfahren zur Bestimmung innerer Ungänzen mit der Impuls-Echo-Technik fest.
Dieses Dokument ist anwendbar für die Ultraschallprüfung von Stahlgussstücken, die üblicherweise kornfeinend geglüht worden sind und die eine Wanddicke bis 600 mm haben.
Für größere Wanddicken sind hinsichtlich der Prüftechnik und der Registriergrenzen besondere Vereinbarungen anwendbar.
Dieses Dokument ist nicht anwendbar für austenitische Stähle und Verbindungsschweißungen. Für hoch beanspruchte Bauteile ist EN 12680 2 anwendbar.
Fonderie - Contrôle par ultrasons - Partie 1: Pièces moulées en acier pour usages généraux
Le présent document spécifie les exigences relatives au contrôle par ultrasons des pièces moulées (à structure ferritique) en acier pour usages généraux ainsi que les méthodes de détermination des discontinuités internes par la technique par réflexion.
Le présent document est applicable au contrôle par ultrasons des pièces moulées en acier qui ont généralement subi un traitement thermique de régénération des grains, et dont l’épaisseur de paroi peut atteindre 600 mm.
Lorsque les épaisseurs de paroi sont supérieures, des accords spéciaux s'appliquent en ce qui concerne les modes opératoires et les niveaux d’enregistrement.
Le présent document ne s’applique pas aux aciers austénitiques et aux soudures d’assemblage. Pour les composants fortement sollicités, l’EN 12680 2 est applicable.
Livarstvo - Ultrazvočno preskušanje - 1. del: Jekleni ulitki za splošno uporabo
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2026
Livarstvo - Ultrazvočno preskušanje - 1. del: Jekleni ulitki za splošno uporabo
Founding - Ultrasonic testing - Part 1: Steel castings for general purposes
Gießereiwesen - Ultraschallprüfung - Teil 1: Stahlgussstücke für allgemeine Verwendung
Fonderie - Contrôle par ultrasons - Partie 1: Pièces moulées en acier pour usages
généraux
Ta slovenski standard je istoveten z: EN 12680-1:2025
ICS:
77.040.20 Neporušitveno preskušanje Non-destructive testing of
kovin metals
77.140.80 Železni in jekleni ulitki Iron and steel castings
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 12680-1
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2025
EUROPÄISCHE NORM
ICS 77.040.20; 77.140.80 Supersedes EN 12680-1:2003
English Version
Founding - Ultrasonic testing - Part 1: Steel castings for
general purposes
Fonderie - Contrôle par ultrasons - Partie 1: Pièces Gießereiwesen - Ultraschallprüfung - Teil 1:
moulées en acier pour usages généraux Stahlgussstücke für allgemeine Verwendung
This European Standard was approved by CEN on 22 September 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 12680-1:2025 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Requirements . 5
4.1 Order information . 5
4.2 Extent of testing . 6
4.3 Wall section zones . 6
4.4 Maximum acceptable size of discontinuities . 6
4.4.1 Acceptance limits for planar discontinuities mainly orientated perpendicular to the
surface . 6
4.4.2 Acceptance limits for volumetric discontinuities. 6
4.4.3 Maximum acceptable discontinuities when radiographic testing (RT) of the casting is
carried out as a supplement to ultrasonic testing (UT) . 7
4.5 Qualification of personnel . 7
4.6 Severity levels. 7
5 Testing . 7
5.1 Principles . 7
5.2 Material . 7
5.3 Equipment and coupling medium . 8
5.3.1 Ultrasonic instrument . 8
5.3.2 Probes. 8
5.3.3 Checking of the ultrasonic test equipment . 8
5.3.4 Coupling medium . 8
5.4 Preparation of casting surfaces for testing . 9
5.5 Test procedure . 9
5.5.1 General . 9
5.5.2 Range setting . 9
5.5.3 Sensitivity setting . 10
5.5.4 Consideration of various types of indications . 10
5.5.5 Recording limits . 11
5.5.6 Evaluation of discontinuities to be recorded . 11
5.5.7 Characterization and sizing of discontinuities . 11
5.6 Test report . 12
Annex A (informative) Sound-beam diameters . 20
(informative)
Annex B Types of indications generated by typical discontinuities . 22
Annex C (informative) Significant technical changes between this document and the
previous edition . 34
Bibliography . 35
European foreword
This document (EN 12680-1:2025) has been prepared by Technical Committee CEN/TC 190 “Foundry
technology”, the secretariat of which is held by DIN.
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 May 2026, and conflicting national standards shall be
withdrawn at the latest by May 2026.
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 12680-1:2003.
Annex C, Table C.1 provides details of significant technical changes between EN 12680-1:2025 and
EN 12680-1:2003.
Within its programme of work, Technical Committee CEN/TC 190 requested CEN/TC 190/WG 10
“Testing for inner discontinuities” to prepare the following standard:
EN 12680-1, Founding — Ultrasonic testing — Part 1: Steel castings for general purposes.
This is one of four European Standards for ultrasonic testing. The other standards are:
— EN 12680-2, Founding — Ultrasonic testing — Part 2: Steel castings for highly stressed components.
— EN 12680-3, Founding — Ultrasonic testing — Part 3: Spheroidal graphite cast iron castings.
— EN 12680-4, Founding — Ultrasonic testing — Part 4: Phased array ultrasonic testing of steel castings
Annex A and Annex B are informative.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations 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.
1 Scope
This document specifies the requirements for the ultrasonic testing of steel castings (with ferritic
structure) for general purposes and the methods for determining internal discontinuities by the pulse-
echo technique.
This document is applicable to the ultrasonic testing of steel castings which have usually received a grain
refining heat treatment and which have wall thicknesses up to and including 600 mm.
For greater wall thicknesses, special agreements are applicable with respect to test procedure and
recording levels.
This document does not apply to austenitic steels and joint welds. For highly stressed components
EN 12680-2 is applicable.
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 2400, Non-destructive testing — Ultrasonic testing — Specification for standard block No. 1
(ISO 2400)
EN ISO 5577, Non-destructive testing — Ultrasonic testing — Vocabulary (ISO 5577)
EN ISO 7963, Non-destructive testing — Ultrasonic testing — Specification for calibration block No. 2
(ISO 7963)
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 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 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
point-like discontinuity
discontinuity, the dimensions of which are smaller than or equal to the sound-beam width
Note 1 to entry: Dimensions in this document relate to length, width and/or dimension in through-wall direction.
3.2
extended discontinuity
discontinuity, the dimensions of which are larger than the sound-beam width
Note 1 to entry: Dimensions in this document relate to length, width and/or dimension in through-wall direction.
3.3
planar discontinuity
discontinuity having two measurable dimensions
3.4
volumetric discontinuity
discontinuity having three measurable dimensions
3.5
rim zone
1/3 of the through-wall thickness from the surface with a maximum of 30 mm
3.6
special rim zone
outer rim zone of the test object with special requirements
Note 1 to entry: Examples of special requirements are machined surfaces, higher stresses and sealing surfaces.
3.7
non-measurable dimension
dimension of a discontinuity that is smaller than the beam width, which depends on the probe size and
the frequency used
Note 1 to entry: Current state of the industry is < 3 mm.
3.8
finishing welding
welding carried out in order to ensure the agreed quality of th
...
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