Non-destructive testing - Ultrasonic testing - Specification for standard block No. 1 (ISO/DIS 2400:2024)

This International Standard specifies requirements for the dimensions, material and manufacture of a steel block for calibrating ultrasonic test equipment used in manual testing.

Zerstörungsfreie Prüfung - Ultraschallprüfung - Beschreibung des Kalibrierkörpers Nr. 1 (ISO/DIS 2400:2024)

Essais non destructifs - Contrôle par ultrasons - Spécifications relatives au bloc étalon n° 1 (ISO/DIS 2400:2024)

La présente Norme internationale spécifie les exigences relatives aux dimensions, au matériau et à la fabrication de l'un des modèles de blocs d'acier qui servent à étalonner l'équipement d'essai par ultrasons utilisé lors de contrôles manuels.

Neporušitvene preiskave - Ultrazvočne preiskave - Specifikacije za umeritveni vzorec št. 1 (ISO/DIS 2400:2024)

General Information

Status
Not Published
Publication Date
27-Jul-2025
Current Stage
4599 - Dispatch of FV draft to CMC - Finalization for Vote
Start Date
25-Nov-2024
Completion Date
25-Nov-2024

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SLOVENSKI STANDARD
01-september-2024
Neporušitvene preiskave - Ultrazvočne preiskave - Specifikacije za umeritveni
vzorec št. 1 (ISO/DIS 2400:2024)
Non-destructive testing - Ultrasonic testing - Specification for standard block No. 1
(ISO/DIS 2400:2024)
Zerstörungsfreie Prüfung - Ultraschallprüfung - Beschreibung des Kalibrierkörpers Nr. 1
(ISO/DIS 2400:2024)
Essais non destructifs - Contrôle par ultrasons - Spécifications relatives au bloc étalon n°
1 (ISO/DIS 2400:2024)
Ta slovenski standard je istoveten z: prEN ISO 2400
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

DRAFT
International
Standard
ISO/DIS 2400
ISO/TC 135/SC 3
Non-destructive testing —
Secretariat: DIN
Ultrasonic testing — Specification
Voting begins on:
for standard block No. 1
2024-07-16
ICS: 19.100
Voting terminates on:
2024-10-08
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
NATIONAL REGULATIONS.
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.
Reference number
ISO/DIS 2400:2024(en)
DRAFT
ISO/DIS 2400:2024(en)
International
Standard
ISO/DIS 2400
ISO/TC 135/SC 3
Non-destructive testing —
Secretariat: DIN
Ultrasonic testing — Specification
Voting begins on:
for standard block No. 1
2024-07-16
ICS: 19.100
Voting terminates on:
2024-10-08
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENTS AND APPROVAL. IT
IS THEREFORE SUBJECT TO CHANGE
AND MAY NOT BE REFERRED TO AS AN
INTERNATIONAL STANDARD UNTIL
PUBLISHED AS SUCH.
This document is circulated as received from the committee secretariat.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
© ISO 2024
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
STANDARDS MAY ON OCCASION HAVE TO
ISO/CEN PARALLEL PROCESSING
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
BE CONSIDERED IN THE LIGHT OF THEIR
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
or ISO’s member body in the country of the requester.
NATIONAL REGULATIONS.
ISO copyright office
RECIPIENTS OF THIS DRAFT ARE INVITED
CP 401 • Ch. de Blandonnet 8
TO SUBMIT, WITH THEIR COMMENTS,
CH-1214 Vernier, Geneva
NOTIFICATION OF ANY RELEVANT PATENT
Phone: +41 22 749 01 11
RIGHTS OF WHICH THEY ARE AWARE AND TO
PROVIDE SUPPORTING DOCUMENTATION.
Email: copyright@iso.org
Website: www.iso.org
Published in Switzerland Reference number
ISO/DIS 2400:2024(en)
ii
ISO/DIS 2400:2024(en)
Contents Page
Foreword .iv
Introduction .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Manufacture . 1
4.1 Steel .1
4.2 Dimensions .1
4.3 Machining, heat treatment and surface finish .1
4.4 Reference marks .2
5 Sound velocities . 2
6 Marking . . 2
7 Declaration of conformity . 2
8 Possible modifications to standard block No. 1 . 3
8.1 General .3
8.2 Slots at zero point .3
8.3 Circular reflector .3
8.4 Block thickness .3
9 Existing blocks . 3
Annex A (normative) Determination of sound velocities . 7
Bibliography . 8

iii
ISO/DIS 2400:2024(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 documents 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 or applicability of any claimed patent
rights in respect thereof. As of the date of publication of this document, ISO had not received notice of (a)
patent(s) which may be required to implement this document. However, implementers are cautioned that
this may not represent the latest information, which may be obtained from the patent database available at
www.iso.org/patents. ISO shall not be held responsible for identifying any or all such patent rights.
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation of the voluntary nature of standards, the meaning of ISO specific terms and expressions
related to conformity assessment, as well as information about ISO's adherence to the World Trade
Organization (WTO) principles in the Technical Barriers to Trade (TBT), see www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 135, Non-destructive testing, Subcommittee SC
3, Ultrasonic testing.
This third edition cancels and replaces the second edition (ISO 2400:2012), which has been technically
revised.
The main changes are as follows:
— the wording “calibration block” is replaced by “standard block”;
— the wording “calibrating” is replaced by “setting”;
— the velocities shall be determined in three perpendicular directions;
— a maximum allowed difference between determined velocities is given;
— a link to a CAD file of the standard block has been added.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.

iv
ISO/DIS 2400:2024(en)
Introduction
Standard block No. 1 is made of steel and may be used for all ultrasonic testing.
Standard block No. 1 makes it possible to check an ultrasonic instrument completely.
Standard block No. 1 makes it possible, during practical testing, to check simply, from time to time, the
setting of the time base and the sensitivity of the ultrasonic instrument. Moreover, it is suited to check the
beam angle and the probe index point of angle-beam probes.
A smaller and lighter standard block No. 2, which has simpler geometry and offers less scope, is described in
ISO 7963.
The International Institute of Welding (IIW) and its members developed the designs of steel calibration
blocks in the 1950’s and 1960’s which were originally indicated as “IIW calibration block 1” and “IIW
calibration block 2”. These designs have been adopted widely and they form the basis of many blocks
currently available.
Some commercially available blocks look similar to standard block No. 1, however such blocks are not
necessarily according to this document and can have different features, dimensions or materials.
The details of standard block No. 1, as specified in this document, have been adapted over time.

v
DRAFT International Standard ISO/DIS 2400:2024(en)
Non-destructive testing — Ultrasonic testing — Specification
for standard block No. 1
1 Scope
This document specifies the requirements for the dimensions, material and manufacture of a steel block for
setting, checking and verification of ultrasonic test equipment used in manual testing.
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.
ISO 5577, Non-destructive testing — Ultrasonic testing — Vocabulary
EN 10025-2, Hot rolled products of structural steels — Part 2: Technical delivery conditions for non-alloy
structural steels
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 5577 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/
4 Manufacture
4.1 Steel
Blocks shall be manufactured from steel grade S355J0, specified in EN 10025-2, or from steel of an
equivalent grade.
4.2 Dimensions
The dimensions of standard block No. 1 shall be as shown in Figure 1, however modifications according to
Clause 8 are permitted.
NOTE This document does not include any requirement for a plastic insert.
NOTE A CAD file of the block can be downloaded from https:// standards .iso .org/ iso/ 2400/ ed -3/ en.
4.3 Machining, heat treatment and surface finish
a) The block shall be rough-machined to a dimension of about
...

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