EN ISO 22825:2012

SLOVENSKI STANDARD
01-september-2012
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SIST EN ISO 22825:2007
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Non-destructive testing of welds - Ultrasonic testing - Testing of welds in austenitic steels
and nickel-based alloys (ISO 22825:2012)
Zerstörungsfreie Prüfung von Schweißverbindungen - Ultraschallprüfung - Prüfung von
Schweißverbindungen aus austenitischem Stahl und Nickellegierungen (ISO
22825:2012)
Essais non destructifs des assemblages soudés - Contrôle par ultrasons - Contrôle des
soudures en aciers austénitiques et en alliages à base nickel (ISO 22825:2012)
Ta slovenski standard je istoveten z: EN ISO 22825:2012
ICS:
25.160.40 Varjeni spoji in vari Welded joints
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN ISO 22825
NORME EUROPÉENNE
EUROPÄISCHE NORM
May 2012
ICS 25.160.40 Supersedes EN ISO 22825:2006
English Version
Non-destructive testing of welds - Ultrasonic testing - Testing of
welds in austenitic steels and nickel-based alloys (ISO
22825:2012)
Contrôle non destructif des assemblages soudés - Contrôle Zerstörungsfreie Prüfung von Schweißverbindungen -
par ultrasons - Contrôle des soudures en aciers Ultraschallprüfung - Prüfung von Schweißverbindungen aus
austénitiques et en alliages à base nickel (ISO 22825:2012) austenitischem Stahl und Nickellegierungen (ISO
22825:2012)
This European Standard was approved by CEN on 3 May 2012.

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, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 22825:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .3

Foreword
This document (EN ISO 22825:2012) has been prepared by Technical Committee CEN/TC 121 “Welding", the
secretariat of which is held by DIN, in collaboration with Technical Committee ISO/TC 44 "Welding and allied
processes".
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 November 2012, and conflicting national standards shall be withdrawn
at the latest by November 2012.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN ISO 22825:2006.
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, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland, Turkey and the United Kingdom.
INTERNATIONAL ISO
STANDARD 22825
Second edition
2012-05-15
Non-destructive testing of welds —
Ultrasonic testing — Testing of welds in
austenitic steels and nickel-based alloys
Contrôle non destructif des assemblages soudés — Contrôle par
ultrasons — Contrôle des soudures en aciers austénitiques et en
alliages à base nickel
Reference number
ISO 22825:2012(E)
©
ISO 2012
ISO 22825:2012(E)
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means,
electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISO’s
member body in the country of the requester.
ISO copyright office
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Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
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Published in Switzerland
ii © ISO 2012 – All rights reserved

ISO 22825:2012(E)
Contents Page
Foreword .iv
Introduction . v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Information required prior to testing. 2
4.1 Items to be defined by specification . 2
4.2 Specific information required by the operator prior to testing . 2
5 Personnel . 3
6 Equipment . 3
7 Range setting for compression waves . 3
8 Sensitivity setting . 4
8.1 General . 4
8.2 Use of side-drilled holes . 4
8.3 Use of other reference reflectors . 5
9 Test procedure and ultrasonic techniques . 5
9.1 Development of the test procedure . 5
9.2 Content of the procedure . 5
9.3 Selection of ultrasonic technique(s) . 6
9.4 Optimization of technique and draft of procedure . 7
9.5 Practical implications of the use of refracted compression waves . 7
10 Classification and sizing of indications . 8
11 Testing of welds . 8
11.1 General . 8
11.2 Surface condition and couplant fluid . 8
11.3 Parent metal testing . 8
11.4 Scanning . 8
11.5 Evaluation of indications . 9
12 Test report . 9
12.1 General data . 9
12.2 Information related to equipment. 9
12.3 Information related to testing technique . 9
12.4 Results of testing .10
Annex A (informative) Compression wave angle beam techniques . 11
Annex B (informative) Stainless steel calibration blocks for range setting .17
Annex C (informative) Reference blocks for sensitivity setting .19
Bibliography .22
ISO 22825:2012(E)
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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 22825 was prepared by the European Committee for Standardization (CEN) Technical Committee TC 121,
Welding, Sub-committee SC 5, Testing of welds, in collaboration with Technical Committee ISO/TC 44, Welding
and allied processes, Subcommittee SC 5, Testing and inspection of welds, in accordance with the Agreement
on technical cooperation between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 22825:2006), which has been technically revised.
The main changes are the addition of annexes on:
— compression wave angle beam techniques;
— stainless steel calibration blocks for range setting;
— examples of reference blocks.
Requests for official interpretations of any aspect of this International Standard should be directed to the
Secretariat of ISO/TC 44/SC 5 via your national standards body. A complete listing of these bodies can be
found at www.iso.org.
iv © ISO 2012 – All rights reserved

ISO 22825:2012(E)
Introduction
Welds in austenitic steel components and dissimilar metal welds are widely regarded as very difficult to inspect
by ultrasound. The problems are mainly associated with unfavourable structure and grain size, as well as
with different material properties which result in inhomogeneous and anisotropic mechanical and acoustic
properties that contrast with the relatively homogeneous and isotropic behaviour in low-alloy steel welds.
Austenitic weld m
...