29.030 - Magnetic materials

IEC 60404-8-7:2020 is available as IEC 60404-8-7:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60404-8-7:2020 defines the grades of cold-rolled grain-oriented electrical steel strip and sheet in nominal thicknesses of 0,20 mm, 0,23 mm, 0,27 mm, 0,30 mm and 0,35 mm. In particular, it gives general requirements, magnetic properties, geometric characteristics, tolerances and technologi...view more

IEC 60404-8-5:2020(E) defines the grades of electrical steel strip and sheet with specified mechanical properties and magnetic polarization. In particular, it gives general requirements, mechanical properties, magnetic polarization, geometric characteristics, tolerances and technological characteristics, as well as inspection procedures.
This document applies to electrical steel strip and sheet intended for the construction of poles and rims of rotating electrical machines.
The grades are grou...view more

IEC 60404-7 specifies a method of measurement of the coercivity of magneticmaterials in an open magnetic circuit.This document is applicable to all magnetic materials with coercivities from 0,2 A/m to160 kA/m.NOTE Examples of magnetic materials covered by this document are amorphous alloys, nanocrystalline alloys, allsoftmagnetic crystalline materials (e.g. Fe, FeSi-, CoFe- and FeNi-alloys), soft ferrites, hard metals, semi-hardmagnetic alloys (e.g. FeCoTiAl-, FeCoV-, FeCrCo- and AlNiCo-alloys) ...view more

IEC 60335-2-25:2020 is available as IEC 60335-2-25:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60335-2-25:2019 deals with the safety of microwave ovens for household and similar use, their rated voltage being not more than 250 V.
This standard also deals with combination microwave ovens, for which Annex AA is applicable.
This standard also deals with microwave ovens intended to b...view more

IEC 61333:2019 specifies marking locations and a coding system of marking on ferrite cores. An alphanumerical marking printed or attached to cores reduces the risk of incorrect assembly, mixing of materials and/or mixing of gapped cores on an assembly line. The markings of the inductance factor AL value or of the gap length are especially important to avoid this kind of problem, and their coding system is specified in this document.
This edition includes the following significant technical chan...view more

IEC TS 61980-3:2019 applies to the equipment for the magnetic field wireless power transfer (MF-WPT) of electric power from the supply network to electric road vehicles for purposes of supplying electric energy to the RESS (rechargeable energy storage system) and/or other on-board electrical systems. The MF-WPT system operates at standard supply voltages ratings per IEC 60038 up to 1 000 V AC and up to 1 500 V DC The power transfer takes place while the electric vehicle (EV) is stationary.
This...view more

IEC 60747-18-1:2019 (E) specifies the test methods and data analysis for the calibration of lens-free CMOS photonic array sensors. This document includes the test conditions of each process, configuration of lens-free CMOS photonic array sensors, statistical analysis of test data, calibration for planarization and linearity, and test reports.

IEC 60404-7:2019 specifies a method of measurement of the coercivity of magnetic materials in an open magnetic circuit. This document is applicable to all magnetic materials with coercivities from 0,2 A/m to 160 kA/m.
This edition includes the following significant technical changes with respect to the previous edition:  
Clause 1: The scope includes a more detailed description of the magnetic materials which applies to this standard;
Clause 4: Figure 2 – circuit diagram for methods A and B wa...view more

IEC - Corrected version

IEC - Corrected version

IEC - Corrected version

IEC - Corrected version

IEC 60404-9:2018 specifies the measurement and test methods for the determination of the following geometrical characteristics of electrical steel strip and sheet:
– edge wave (wave factor);
– residual curvature;
– edge camber;
– deviation from the shearing line (internal stress);
– burr height.
This document applies to electrical steel strip and sheet intended for the construction of magnetic circuits and corresponding to Classes B2, C21, C22 and C23 of IEC 60404-1.
This edition includes...view more

This part of IEC 60404 specifies the methods used for determining the resistivity, density and
stacking factor of grain-oriented and non-oriented electrical steel strip and sheet. These
quantities are necessary to establish the physical characteristics of the material. Moreover,
the density is necessary to allow specified values of the magnetic polarization, resistivity and
stacking factor to be determined.
Since these properties are functions of temperature, the measurements will be made a...view more

IEC 60404-13:2018 specifies the methods used for determining the resistivity, density and stacking factor of grain-oriented and non-oriented electrical steel strip and sheet. These quantities are necessary to establish the physical characteristics of the material. Moreover, the density is necessary to allow specified values of the magnetic polarization, resistivity and stacking factor to be determined. Since these properties are functions of temperature, the measurements will be made at an ambie...view more

IEC - Corrected version

IEC - Corrected version

This part of IEC 60404 defines the grades of Fe-based amorphous strip delivered in the
semi-processed state, i.e. without final heat treatment, of nominal thickness 0,025 mm. Other
nominal thicknesses in the range from 0,020 mm to 0,030 mm can be specified by agreement
between the manufacturer and the purchaser at the time of enquiry and order. In particular, it
gives general requirements, magnetic properties, geometric characteristics, tolerances and
technological characteristics, as well ...view more

This part of IEC 60404 specifies methods for the measurement of AC magnetic properties of
soft magnetic materials, other than electrical steels and soft ferrites, in the frequency range
20 Hz to 100 kHz. The materials covered by this part of IEC 60404 include those speciality
alloys listed in IEC 60404-8-6, amorphous and nano-crystalline soft magnetic materials,
pressed and sintered and metal injection moulded parts such as are listed in IEC 60404-8-9,
cast parts and magnetically soft compo...view more