SIST EN ISO 9934-2:2015

SLOVENSKI STANDARD
01-december-2015
1DGRPHãþD
SIST EN ISO 9934-2:2004
Neporušitveno preskušanje - Preskušanje z magnetnimi delci - 2. del: Sredstva za
preiskave (ISO 9934-2:2015)
Non-destructive testing - Magnetic particle testing - Part 2: Detection media (ISO 9934-
2:2015)
Zerstörungsfreie Prüfung - Magnetpulverprüfung - Teil 2: Prüfmittel (ISO 9934-2:2015)
Essais non destructifs - Magnétoscopie - Partie 2: Produits magnétoscopiques (ISO
9934-2:2015)
Ta slovenski standard je istoveten z: EN ISO 9934-2:2015
ICS:
19.100 Neporušitveno preskušanje Non-destructive testing
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN ISO 9934-2
EUROPEAN STANDARD
NORME EUROPÉENNE
September 2015
EUROPÄISCHE NORM
ICS 19.100 Supersedes EN ISO 9934-2:2002
English Version
Non-destructive testing - Magnetic particle testing - Part 2:
Detection media (ISO 9934-2:2015)
Essais non destructifs - Magnétoscopie - Partie 2: Zerstörungsfreie Prüfung - Magnetpulverprüfung - Teil
Produits indicateurs (ISO 9934-2:2015) 2: Prüfmittel (ISO 9934-2:2015)
This European Standard was approved by CEN on 10 July 2015.

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, Former Yugoslav Republic of Macedonia, 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

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 9934-2:2015 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
European foreword
This document (EN ISO 9934-2:2015) has been prepared by Technical Committee
CEN/TC 138 “Non-destructive testing”, the secretariat of which is held by AFNOR, in collaboration with
Technical Committee ISO/TC 135 “Non-destructive testing”.
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 March 2016, and conflicting national standards shall
be withdrawn at the latest by March 2016.
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 9934-2:2002.
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, Former Yugoslav Republic of Macedonia,
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.
Endorsement notice
The text of ISO 9934-2:2015 has been approved by CEN as EN ISO 9934-2:2015 without any
modification.
INTERNATIONAL ISO
STANDARD 9934-2
Second edition
2015-09-01
Non-destructive testing — Magnetic
particle testing —
Part 2:
Detection media
Essais non destructifs — Magnétoscopie —
Partie 2: Produits indicateurs
Reference number
ISO 9934-2:2015(E)
©
ISO 2015
ISO 9934-2:2015(E)
© ISO 2015, Published in Switzerland
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form
or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior
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copyright@iso.org
www.iso.org
ii © ISO 2015 – All rights reserved

ISO 9934-2:2015(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Safety precautions . 2
5 Classification . 2
5.1 General . 2
5.2 Magnetic inks. 2
5.3 Powders. 2
6 Testing and test certificate . 2
6.1 Type testing and batch testing . 2
6.2 In-service testing . 2
7 Requirements and test methods . 2
7.1 Performance . 2
7.1.1 Type testing and batch testing . 2
7.1.2 In-service testing . 3
7.1.3 Contrast aid paints . 3
7.2 Colour . 3
7.3 Particle size . 3
7.3.1 Method . 3
7.3.2 Definition of the particle size . 3
7.4 Temperature resistance. 3
7.5 Fluorescent coefficient and fluorescent stability . 3
7.5.1 Type testing . 4
7.5.2 Batch testing . 5
7.6 Fluorescence of carrier liquid . 5
7.7 Flash point . 5
7.8 Corrosion induced by detection media . 5
7.8.1 Corrosion testing on steel . 5
7.8.2 Corrosion testing of copper . 5
7.9 Viscosity of the carrier liquid . 5
7.10 Mechanical stability . 5
7.10.1 Long term test (endurance test) . 5
7.10.2 Short-term test . 6
7.11 Foaming . 8
7.12 pH . 8
7.13 Storage stability . 8
7.14 Solids content . 8
7.15 Sulfur and halogen content . 8
8 Testing requirements . 8
9 Test report . 9
10 Packaging and labelling . 9
Annex A (normative) Procedure for type, batch, and in-service testing .10
Annex B (normative) Reference blocks .12
Annex C (normative) Corrosion testing of steel .17
Bibliography .21
ISO 9934-2:2015(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.
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).
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. Details of
any patent rights identified during the development of the document will be in the Introduction and/or
on the ISO list of patent declarations received (see www.iso.org/patents).
Any trade name used in this document is information given for the convenience of users and does not
constitute an endorsement.
For an explanation on the meaning of ISO specific terms and expressions related to conformity
assessment, as well as information about ISO’s adherence to the WTO principles in the Technical
Barriers to Trade (TBT) see the following URL: Foreword - Supplementary information.
ISO 9934-2 was prepared by the European Committee for Standardization (CEN) Technical Committee
CEN/TC 138, Non-destructive testing, in collaboration with ISO/TC 135, Non-destructive testing,
Subcommittee SC 2, Surface methods, in accordance with the Agreement on technical cooperation
between ISO and CEN (Vienna Agreement).
This second edition cancels and replaces the first edition (ISO 9934-2:2002), which has been
technically revised.
ISO 9934 consists of the following parts under the general title Non-destructive testing — Magnetic
particle testing:
— Part 1: General principle
— Part 2: Detection media
— Part 3: Equipment
iv © ISO 2015 – All rights reserved

INTERNATIONAL STANDARD ISO 9934-2:2015(E)
Non-destructive testing — Magnetic particle testing —
Part 2:
Detection media
1 Scope
This part of ISO 9934 specifies the significant properties of magnetic particle testing products (including
magnetic ink, powder, carrier liquid, contrast aid paints) and the methods for checking their properties.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated
references, the latest edition of the referenced document (including any amendments) applies.
ISO 2160, Petroleum products — Corrosiveness to copper — Copper strip test
ISO 2591-1, Test sieving — Part 1: Methods using test sieves of woven wire cloth and perforated metal plate
ISO 3059, Non-destructive testing — Penetrant testing and magnetic particle testing — Viewing conditions
ISO 3104, Petroleum products — Transparent and opaque liquids — Determination of kinematic viscosity
and calculation of dynamic viscosity
ISO 4316, Surface active agents — Determination of pH of aqueous solutions — Potentiometric method
ISO 9934-1, Non-destructive testing — Magnetic particle testing — Part 1: General principle
ISO 9934-3, Non-destructive testing — Magnetic particle testing — Part 3: Equipment
ISO 12707, Non-destructive testing — Terminology — Terms used in magnetic particle testing
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 1330-7, Non-destructive testing — Terminology — Part 7: Terms used in magnetic particle testing
EN 10083-2, Quenched and tempered steels — Part 2: Technical delivery conditions for non-alloy steels
EN 10204, Metallic products — Types of inspection documents
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 1330-1, EN 1330-2, EN 1330-7,
ISO 12707, and the following apply.
3.1
batch
quantity of material produced during one manufacturing operation having uniform properties
throughout and with a unique identifying number or mark
ISO 9934-2:2015(E)
4 Safety precautions
The materials used in magnetic particle inspection and those used in their testing include chemicals
that can be harmful, flammable, and/or volatile. All necessary precautions should be observed. All
relevant regulations, including national and local regulations pertaining to health and safety, anti-
pollution requirements, etc., shall be observed.
5 Classification
5.1 General
The magnetic particle materials covered by this specification shall be classified as follows.
5.2 Magnetic inks
Magnetic inks shall consist of finely divided coloured or fluorescent magnetic particles in a suitable
carrier liquid. They shall form a uniform suspension when agitated.
Magnetic inks can be produced from products supplied as concentrates, including paste and powders,
or ready for use.
5.3 Powders
Powders for the dry technique shall consist of finely divided coloured or fluorescent magnetic particles.
6 Testing and test certificate
6.1 Type testing and batch testing
Type testing and batch testing of magnetic particle materials shall be carried out in accordance with
the requirements of ISO 9934-1, ISO 9934-2, and ISO 9934-3.
Type testing is carried out in order to demonstrate suitability of a product for the intended use. Batch
testing is carried out in order to demonstrate conformity of the characteristics of a batch to the product
type specified.
The supplier shall provide a test certificate showing compliance with this International Standard having
used the methods detailed. This certificate shall include results obtained and tolerances allowed.
If any changes are made to the detection media, then a new type test shall be performed.
6.2 In-service testing
In–service testing is carried out to demonstrate the continued performance of the detection media.
7 Requirements and test methods
7.1 Performance
7.1.1 Type testing and batch testing
Type testing and batch testing shall be carried out according to Annex A using the reference blocks
type 1 or type 2 as described in Annex B.
2 © ISO 2015 – All rights reserved

ISO 9934-2:2015(E)
7.1.2 In-service testing
In-service testing shall be carried out according to Annex A using one of the reference blocks type 1 or
type 2 as described in Annex B or a test block which exhibit similar discontinuities to those normally
found in components typically processed in the equipment.
7.1.3 Contrast aid paints
Type testing and batch testing shall be carried out according to 7.1.1 after having applied the paint in
accordance with the manufacturer instructions and using a type test approved, compatible magnetic ink.
7.2 Colour
The colour of magnetic particles detection media under working conditions shall be stated by the supplier.
The colour of the batch test sample shall not differ from the colour of the type test sample when
visually compared.
7.3 Particle size
7.3.1 Method
The method for determination of particle size is dependent on the range of the particle size distribution.
[2]
For magnetic inks, the particle size distribution can be determined by the Coulter Method or an
equivalent method.
7.
...