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Publication details

Publication CODE Title
IEC TR 63304:2021 (2021-04) METHODS OF MEASUREMENT OF THE MAGNETIC PROPERTIES OF PERMANENT MAGNET (MAGNETICALLY HARD) MATERIALS in AN OPEN MAGNETIC CIRCUIT USING A SUPERCONDUCTING MAGNET
 
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Description
IEC TR 63304:2021(E) describes the general principle and technical details of the methods of measurement of the DC magnetic properties of permanent magnet materials in an open magnetic circuit using a superconducting magnet (SCM).
This method is applicable to permanent magnet materials, such as those specified in IEC 60404-8-1, the properties of which are presumed homogeneous throughout their volume.
There are two methods:
' the SCM-Vibrating Sample Magnetometer (VSM) method;
' the SCM-Extraction method.
This document also describes methods to correct the influence of the self-demagnetizing field in the test specimen on the demagnetization curve measured in an open magnetic circuit. The magnetic properties are determined from the corrected demagnetization curve.
NOTE'These SCM-methods can determine the magnetic properties of permanent magnet materials with coercivity higher than 2 MA/m. The methods of measurement in a closed magnetic circuit specified in IEC 60404-5 can lead to significant measurement error due to saturation effects in the pole pieces of yoke for the magnetic materials with coercivity higher than 1,6 MA/m (see IEC 60404-5).
Class  C990  (IEC PUBLICATIONS IEC PUBLICATIONS)
Available files
EN version

Status
Status IEC PUBLICATION
Situation Currently active
Origin
Committee TC 68
MAGNETIC ALLOYS AND STEELS
Responsible De heer VAN HECKE Luk
Approval
BEC Approval 2021-04-26
ICS-Code (International Standards Classification) 17.220.20 , 29.030
NBN Status New
IEC publication date 2021-04-26
IEC stability date 2025-12-31
IEC file modification date 2021-04-28
IEC last modification date 2021-04-28