Classification of magnetic powder cores

IEC 63299:2022 specifies classification rules for metallic magnetic powder cores used in inductive components fulfilling the requirements of the electronics industries. This document addresses the following objectives for magnetic powder cores suppliers and users: - cross-reference between core materials from multiple suppliers; - assistance to users in understanding the published technical data in catalogues when comparing multiple suppliers; - guidance to users in selecting the most applicable core for each application; - establishing uniform benchmarks for suppliers for performance in the new development of core material.

Klassifizierung magnetischer Pulverkerne

Classification des noyaux en poudre magnétique

L'IEC 63299:2022 spécifie les règles de classification des noyaux en poudre magnétique métallique utilisés dans les composants inductifs qui satisfont aux exigences de l'industrie électronique. Le présent document répond aux objectifs suivants pour les fournisseurs et les utilisateurs de noyaux en poudre magnétique: - établir une référence croisée entre les noyaux de plusieurs fournisseurs; - fournir un appui aux utilisateurs afin de les aider à comprendre les données techniques publiées dans les catalogues lors de la comparaison de plusieurs fournisseurs; - fournir des recommandations aux utilisateurs concernant le choix du noyau le plus approprié pour chaque application; - établir des références uniformes pour les fournisseurs en ce qui concerne les performances dans le cadre du développement de nouveaux noyaux.

Klasifikacija jeder iz magnetnega prahu

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Klasifikacija jeder iz magnetnega prahu
Classification of magnetic powder cores
Ta slovenski standard je istoveten z: EN IEC 63299:2022
29.030 Magnetni materiali Magnetic materials
29.100.10 Magnetne komponente Magnetic components
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.


ICS 29.030; 29.100.10
English Version
Classification of magnetic powder cores
(IEC 63299:2022)
Classification des noyaux en poudre magnétique Klassifizierung magnetischer Pulverkerne
(IEC 63299:2022) (IEC 63299:2022)
This European Standard was approved by CENELEC on 2022-10-20. CENELEC 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 CENELEC 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 CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63299:2022 E
European foreword
The text of document 51/1403/CDV, future edition 1 of IEC 63299, prepared by IEC/TC 51 "Magnetic
components, ferrite and magnetic powder materials" was submitted to the IEC-CENELEC parallel vote
and approved by CENELEC as EN IEC 63299:2022.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2023-07-20
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2025-10-20
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 63299:2022 was approved by CENELEC as a European
Standard without any modification.
Annex ZA
Normative references to international publications
with their corresponding European publications
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)
NOTE 1 Where an International Publication has been modified by common modifications, indicated by (mod), the
relevant EN/HD applies.
NOTE 2 Up-to-date information on the latest versions of the European Standards listed in this annex is available
Publication Year Title EN/HD Year
IEC 60050-221 - International Electrotechnical Vocabulary - - -
Part 221: Magnetic materials and
IEC 60404-1 - Magnetic materials - Part 1: Classification EN 60404-1 -
1 2
IEC 63300 - Test methods for electrical and magnetic EN IEC 63300 -
properties of magnetic powder cores

Under preparation. Stage at the time of publication: IEC CDV 63300:2022.
Under preparation. Stage at the time of publication: prEN IEC 63300:2022.
IEC 63299 ®
Edition 1.0 2022-09
Classification of magnetic powder cores

Classification des noyaux en poudre magnétique

ICS 29.030; 29.100.10 ISBN 978-2-8322-5704-3

– 2 – IEC 63299:2022 © IEC 2022
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Classification . 6
4.1 General . 6
4.2 Iron powder core materials . 6
4.2.1 Chemical composition . 6
4.2.2 Characteristics. 6
4.3 Iron-silicon powder core materials . 7
4.3.1 Chemical composition . 7
4.3.2 Characteristics. 7
4.4 Iron-silicon-aluminum powder core materials. 8
4.4.1 Chemical composition . 8
4.4.2 Characteristics. 8
4.5 Iron-nickel powder core materials . 8
4.5.1 Chemical composition . 8
4.5.2 Characteristics. 8
4.6 Iron-nickel-molybdenum powder core materials . 9
4.6.1 Chemical composition . 9
4.6.2 Characteristics. 9
4.7 Iron-based amorphous powder core materials . 10
4.7.1 Chemical composition . 10
4.7.2 Characteristics. 10
4.8 Iron-based nanocrystalline powder core materials . 11
4.8.1 Chemical composition . 11
4.8.2 Characteristics. 11

Table 1 – Typical magnetic properties of iron powder core materials . 7
Table 2 – Typical magnetic properties of iron-silicon powder core materials . 7
Table 3 – Typical magnetic properties of iron-silicon-aluminum powder core materials . 8
Table 4 – Typical magnetic properties of iron-nickel powder core materials . 9
Table 5 – Typical magnetic properties of iron-nickel-molybdenum powder core
materials . 10
Table 6 – Typical magnetic properties of iron-based amorphous powder core materials . 11
Table 7 – Typical magnetic properties of iron-based nanocrystalline powder core
materials . 11

IEC 63299:2022 © IEC 2022 – 3 –

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IEC 63299 has been prepared by IEC technical committee 51: Magnetic components, ferrite
and magnetic powder materials. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
51/1403/CDV 51/1413/RVC
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at The main document types developed by IEC are
described in greater detail at

– 4 – IEC 63299:2022 © IEC 2022
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under in the data related to the
specific document. At this date, the document will be
• reconfirmed,
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