SIST EN IEC 60404-1:2017/oprA1:2025
(Amendment)Amendment 1 - Magnetic materials - Part 1: Classification
Amendment 1 - Magnetic materials - Part 1: Classification
Magnetische Werkstoffe - Teil 1: Einteilung
Amendement 1 - Matériaux magnétiques - Partie 1: Classification
Magnetni materiali - 1. del: Razvrstitev - Dopolnilo A1
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Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2025
Magnetni materiali - 1. del: Razvrstitev - Dopolnilo A1
Amendment 1 - Magnetic materials - Part 1: Classification
Magnetische Werkstoffe - Teil 1: Einteilung
Amendement 1 - Matériaux magnétiques - Partie 1: Classification
Ta slovenski standard je istoveten z: EN IEC 60404-1:2017/prA1:2024
ICS:
29.030 Magnetni materiali Magnetic materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
68/780/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 60404-1/AMD1 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2024-12-27 2025-03-21
SUPERSEDES DOCUMENTS:
68/759/CD, 68/767/CC
IEC TC 68 : MAGNETIC ALLOYS AND STEELS
SECRETARIAT: SECRETARY:
Germany Mr Richard Daniel Knobloch
OF INTEREST TO THE FOLLOWING COMMITTEES: HORIZONTAL FUNCTION(S):
ASPECTS CONCERNED:
Electricity transmission and distribution,Energy Efficiency
SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING
Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.
This document is still under study and subject to change. It should not be used for reference purposes.
Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of
which they are aware and to provide supporting documentation.
Recipients of this document are invited to submit, with their comments, notification of any relevant “In Some
Countries” clauses to be included should this proposal proceed. Recipients are reminded that the CDV stage is the
final stage for submitting ISC clauses. (SEE AC/22/2007 OR NEW GUIDANCE DOC).
TITLE:
Amendment 1 - Magnetic materials - Part 1: Classification
PROPOSED STABILITY DATE: 2030
NOTE FROM TC/SC OFFICERS:
IEC/TC 68 decided, at their meeting in November 2022 at Osaka, to start the project of amending IEC
60404-1:2016 ED 3. The work was allocated to TC 68/WG 1 and WG5. The amendment is focused on
the new class R of domain-refined grain-oriented electrical steel and some new permanent magnetic
materials.
download this electronic file, to make a copy and to print out the content for the sole purpose of preparing
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IEC CDV 60404-1/AMD1 Ed3 © IEC 2024 – 2 – 68/780/CDV
1 Amendment to IEC 60404-1 Ed. 3.0:
2 Magnetic materials – Part 1: Classification
3 FORWORD
4 This amendment has been prepared by IEC Technical committee 68: Magnetically alloys and
5 steels.
6 The text of this amendment is based on the following documents:
Draft Report on voting
68/XXX/FDIS 68/XXX/RVD
8 Full information on the voting for its approval can be found in the report on voting indicated in
9 the above table.
10 The language used for the development of this amendment is English.
11 The committee has decided that the contents of this amendment and the base document will
12 remain unchanged until the stability date indicated on the IEC website under webstore.iec.ch
13 in the data related to the specific document. At this date, the document will be
14 • reconfirmed,
15 • withdrawn,
16 • replaced by a revised edition, or
17 • amended.
18 _____________
20 Page 13
21 4.3.2.2.3 Basis of subclassification
22 Add the following text after the end of the paragraph:
23 With the revision of IEC 60404-8-7 in 2020, an additional subclassification has been
24 introduced in order to distinguish between high-permeability grades with and without magnetic
25 domain refinement.
26 4.3.2.2.5 Physical characteristics
27 Add the following list item after existing “• magnetic ….”:
28 • DR (Domain Refined) state: whether or not the material has been treated with a
29 technology for magnetic domain refinement;
30 Add the following note before the existing final paragraph (starting with “In addition, …”):
31 NOTE: According to IEC 60404-8-7, the magnetic properties of non-heatproof magnetic
32 domain refined high-permeability grades are to be determined according to IEC 60404-3
33 without applying a supplementary heat treatment, and in the case of heatproof magnetic
34 domain refinement grades, these properties are to be determined in accordance with IEC
35 60404-2 after the required heat treatment.
IEC CDV 60404-1/AMD1 Ed3 © IEC 2024 – 3 – 68/780/CDV
37 Page 30
38 4.9.2 Class I1 – Iron-based amorphous alloys
39 4.9.2.1 Reference document
40 Replace the existing sentence with the following:
41 These materials are covered by IEC 60404-8-11.
43 Page 38
44 Replace the existing title of subclause:
45 5.2.5 Class R7 – Rare earth-iron-boron (REFeB) alloys
46 with the following:
47 5.2.5 Class R7 – Rare earth-iron-boron (REFeB) sintered magnets
49 Page 38
50 5.2.5.2 Chemical composition and manufacturing method
51 Replace the existing first paragraph:
52 The alloys are based on the compound RE Fe B. RE is mainly neodymium, which may be
2 14
53 partially substituted by dysprosium, praseodymium or other rare earths. Iron may be partially
54 substituted by cobalt. The alloys consist of 28 % to 35 % total rare earth, 0 % to 15 % cobalt.
55 0,85 % to 1,2 % boron, 0 % to 10 % dysp
...
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