Magnetic Materials Series
These series of standards provide ways to test and measure for multiple types of magnetic materials. The IEC 60404 series of standards primarily consists of specific ways to measure certain types of magnetic materials. There is also a Redline version of some of these standards listed in that series. The IEC 62044 series comprises of three parts that specify excitation level for magnetic properties.
IEC 60404-1 Ed. 3.0 b:2016
Magnetic materials - Part 1: Classification
IEC 60404-1:2016 is available as IEC 60404-1:2016 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60404-1:2016 is intended to classify commercially available magnetic materials. The term "magnetic materials" denotes substances where the application requires the existence of ferromagnetic or ferrimagnetic properties. The classification of magnetic materials is based upon the generally recognized existence of two main groups of products:
- soft magnetic materials (coercivity less than or equal to 1 000 A/m);
- hard magnetic materials (coercivity greater than 1 000 A/m). This edition includes the following significant technical changes with respect to the previous edition:
a) Removal of all tables and values describing typical properties of the material to be consistent with the aim of the document to be a classification and not a specification.
b) Enlargement of the Ni content for the classes E1 and E3.
c) Enlargement of the Co content for the classes F3.
d) Addition of a new class: U5 bonded rare earth-iron-nitrogen magnets.
IEC 60404-1-1 Ed. 1.0 b:2004
Magnetic materials - Part 1-1: Classification - Surface insulations of electrical steel sheet, strip and laminations "
Establishes a classification of surface insulations for electrical steel sheet, strip and laminations according to their general composition, relative insulating ability and function. These surface insulations are either oxide layers or applied coatings. The purpose of this classification is to create a nomenclature for the various types of surface insulations and to assist users of surface insulations by providing general information about the chemical nature and use of the surface insulations. It is not the intent of this classification to specify insulation requirements in terms of specific values of surface insulation resistance. Such requirements are agreed between the purchaser and the steel producer, where applicable. The classification is used in conjunction with the various specifications for cold rolled electrical steels (see the standards in the IEC 60404-8 series in Clause 2).
IEC 60404-2 Ed. 3.1 b:2008
Magnetic materials - Part 2: Methods of measurement of the magnetic properties of electrical steel strip and sheet by means of an Epstein frame
"Applies to grain oriented and non-oriented electrical sheet and strip for a.c. measurements of magnetic properities at frequencies up to 400 Hz and for d.c. magnetic measurements. Defines the general principles and the technical details of the measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame. The a.c. magnetic characteristics are determined for sinusoidal induced voltages, for specified peak values of magnetic polarization and for a specified frequency. This consolidated version consists of the third edition (2000) and its amendment 1 (2008). Therefore, no need to order amendment in addition to this publication. "
IEC 60404-3 Ed. 2.2 b:2010
Magnetic materials - Part 3: Methods of measurement of the magnetic properties of electrical steel strip and sheet by means of a single sheet tester
"IEC 60404-3:1992+A1:2002+A2:2009 defines the general principles and the technical details of the measurement of the magnetic properties of magnetic sheets, at power frequencies, by means of a single sheet tester. This tester is applicable to flat plate specimens obtained from magnetic sheets and strips of any quality. The magnetic characterictics are determined for a sinusoidal induced voltage, for specified peak values of magnetic polarization and for a specified frequency. This consolidated version consists of the second edition (1992), its amendment 1 (2002), its amendment 2 (2009) and its corrigendum (2009). Therefore, no need to order amendments in addition to this publication.< /b> "
IEC 60404-4 Ed. 2.2 b:2008
Magnetic materials - Part 4: Methods of measurement of d.c. magnetic properties of magnetically soft materials
"Describes the terminology and two measuring methods, namely: the ring method and the permeameter method. Both methods use a test specimen in a closed magnetic circuit. Description of the test equipment and the electric circuits is given. This consolidated version consists of the second edition (1995) and its amendment 1 (2000). Therefore, no need to order amendment in addition to this publication. "
IEC 60404-5 Ed. 3.0 b:2015
Magnetic materials - Part 5: Permanent magnet (magnetically hard) materials - Methods of measurement of magnetic properties
IEC 60404-5:2015 is to define the method of measurement of the magnetic flux density, magnetic polarization and the magnetic field strength and also to determine the demagnetization curve and recoil line of permanent magnet materials. This edition includes the following significant technical changes with respect to the previous edition:
- adaption of the measurement methods and test conditions to newly introduced magnetically hard materials with coercivity values HcJ higher than 2 MA/m;
- update of the temperature conditions to allow the measurement of new materials with high temperature coefficients.
IEC 60404-6 Ed. 3.0 b:2018
Magnetic materials - Part 6: Methods of measurement of the magnetic properties of magnetically soft metallic and powder materials at frequencies in the range 20 Hz to 100 kHz by the use of ring specimens
IEC 60404-6:2018 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 composite materials. The object of this part is to define the general principles and the technical details of the measurement of the magnetic properties of magnetically soft materials by means of ring methods. For materials supplied in powder form, a ring test specimen is formed by the appropriate pressing method for that material. The measurement of the DC magnetic properties of soft magnetic materials is made in accordance with the ring method of IEC 60404-4. The determinations of the magnetic characteristics of magnetically soft components are made in accordance with IEC 62044-3. This edition includes the following significant technical changes with respect to the previous edition:
a) adaption to modern measurement and evaluation methods, in particular the introduction of the widely spread digital sampling method for the acquisition and evaluation of the measured data;
b)limitation of the frequency range up to 100 kHz;
c) deletion of Clause 7 of the second edition that specified the measurement of magnetic properties using a digital impedance bridge;
d) addition of a new Clause 7 on the measurementá of the specific total loss by the wattmeter method, including an example of the application of the digital sampling method;
e) addition of an informative annex on the technical details of the digital sampling technique for the determination of magnetic properties.
IEC 60404-7 Ed. 2.0 b:2019
Magnetic materials - Part 7: Method of measurement of the coercivity (up to 160 kA/m) of magnetic materials in an open magnetic circuit
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 was simplified and the fluxgate probes inside the solenoid have been added;
- Clause 7: Compensation for the earth’s magnetic field and for static and dynamic magnetic noise fields has been added;
- Clause 8: Magnetic shielding of the measuring region has been added;
- 9.2.2: The measuring methods for local and integral measurement of the flux in the test specimen have been separated and the limitations in size and shape of the test specimen have been considered.
- 9:3: The method C with a VSM (Vibrating Sample Magnetometer) has been moved from 9.3 to the Annex B.
- The term "complex shaped test specimen" has been replaced in several clauses by "test specimen different from ellipsoids".
- The character of Annex A has been changed from “informative” to “normative”.
IEC 60404-8-1 Ed. 3.0 b:2015
Magnetic materials - Part 8-1: Specifications for individual materials - Magnetically hard materials
IEC 60404-8-1:2015 specifies minimum values for the principal magnetic properties of, and dimensional tolerances for, technically important magnetically hard materials (permanent magnets). For information purposes only, this part of IEC 60404 provides values for the densities of the materials and the ranges of their chemical compositions. Some additional physical data and mechanical reference values concerning the magnetic materials are given for information and comparison purposes. This edition includes the following significant technical changes with respect to the previous edition:
a) recently developed anisotropic Sm-Fe-N bonded magnets are included;
b) high energy ferrites with La and Co as substituents are included.
IEC 60404-8-10 Ed. 2.0 b:2009
Magnetic materials - Part 8-10: Specifications for individual materials - Magnetic materials (iron and steel) for use in relays
"IEC 60404-8-10:2009 specifies the general requirements, magnetic properties, geometric characteristics and tolerances as well as inspection procedures for magnetic materials used primarily for relays. This standard applies to pure iron, non-alloyed and alloyed steel and ferritic stainless steel products usually delivered in either the semi-processed or fully-processed state. These materials correspond to classes A, B, C and D.3 of IEC 60404-1. This second edition cancels and replaces the first edition published in 1994 and constitutes a technical revision. The main modifications from the previous edition of the standard are as follows:
- introduction of the ferritic stainless steels and the fully-processed state in the scope of the standard (see Clause 1);
- modification of the designation with the letter R at the beginning and the condition and state at the end (see Clause 5);
- introduction of the new grades R160 and R320 (see Table 2);
- modification of the requirements for the heat treatment of test specimens for semi-processed material (see Subclause 8.3.1);
- indication in Bibliography of standards referred to in this standard as an information. "
IEC 60404-8-11 Ed. 1.0 b:2018
Magnetic materials - Part 8-11: Specifications for individual materials - Fe-based amorphous strip delivered in the semi-processed state
IECá60404-8-11:2018 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 as inspection procedures.
This document applies to the rapidly-solidified Fe-based amorphous strip supplied in coils with as-cast edges and intended for the construction of magnetic circuits.
The grades are grouped into two classes:
- conventional grades;
- high permeability grades.
They correspond to Class I1 of IECá60404-1.
IEC 60404-8-3 Ed. 3.0 b:2005
Magnetic materials - Part 8-3: Specifications for individual materials - Cold-rolled electrical non-alloyed and alloyed steel sheet and strip delivered in the semi-processed state
Applies to magnetic material intended for the construction of magnetic circuits. These materials correspond respectively to classes C.21 and B.2 of IEC 60404-1: 2000. This standard defines the grades of cold-rolled electrical non-oriented non-alloyed (non alloyed steel is that steel the basic constituent of which is iron containing alloying elements in amounts smaller than the limiting values fixed by ISO 4948 1) or alloyed (alloyed steel is that steel the basic constituent of which is iron containing alloying elements in amounts equal to or greater than the limiting values fixed by ISO 4948 1) steel sheet and strip delivered in the semi-processed state, i.e. without final heat treatment, of nominal thicknesses given in Tables 1 and 2. It specifies general requirements, the magnetic properties, the geometrical characteristics and tolerances, technological characteristics as well as the inspection procedure.
IEC 60404-8-4 Ed. 3.0 b:2013
Magnetic materials - Part 8-4: Specifications for individual materials - Cold-rolled non-oriented electrical steel strip and sheet delivered in the fully-processed state
IEC 60404-8-4:2013 defines the grades of cold-rolled non-oriented electrical steel strip and sheet in nominal thicknesses of 0,35 mm, 0,50 mm, 0,65 mm and 1,00 mm. It specifies general requirements, the magnetic properties, geometric characteristics and tolerances, and technological characteristics, as well as the inspection procedure. This standard applies to materials supplied in the fully annealed condition intended for the construction of magnetic circuits. It does not apply to semi-processed material. This edition includes the following significant technical changes with respect to the previous edition:
- Deletion of the dates for all normative references;
- Introduction of the new grades M210-35A 5 and M230-50A 5.
IEC 60404-8-5 Ed. 2.0 en:2020
Magnetic materials - Part 8-5: Specifications for individual materials - Electrical steel strip and sheet with specified mechanical properties and magnetic polarization
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 grouped into two classes according to their manufacturing process: - hot-rolled grades; - cold-rolled grades. They correspond to Class D21 of IEC 60404-1. This edition includes the following significant technical changes with respect to the previous edition: a) extension of the range of products to include the improved grades; b) division of "flatness" into "edge wave (wave factor)" and "residual curvature" in consistent with IEC 60404-9; c) change length of test specimen for determinations of geometrical characters from 2 m to 1 m.
IEC 60404-8-6 Ed. 3.0 b:2016
Magnetic materials - Part 8-6: Specifications for individual materials - Soft magnetic metallic materials
IEC 60404-8-6:2016 specifies the general requirements, magnetic properties, geometric characteristics and tolerances as well as inspection procedures for pure iron, silicon-iron, nickel-iron and cobalt-iron. The materials are in the form of bar, billet, sheet, strip or wire. The alloys covered correspond to those defined by classes A, C1, C2, E1 to E4 and F1 to F3 in IEC 60404-1.
IEC 60404-8-7 Ed. 5.0 en:2020
Magnetic materials - Part 8-7: Specifications for individual materials - Cold-rolled grain-oriented electrical steel strip and sheet delivered in the fully-processed state
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 technological characteristics, as well as inspection procedures. This document applies to Goss textured grain-oriented electrical steel strip and sheet supplied in the final annealed condition in coils or sheets, and intended for the construction of magnetic circuits. The grades are grouped into three classes: - conventional grades; - high permeability grades; - magnetic domain refined high permeability grades. They correspond to Class C22 of IEC 60404-1. This edition includes the following significant technical changes with respect to the previous edition: - insertion of a third class of grain-oriented electrical steels for magnetic domain refined high permeability grades; - introduction of the single sheet tester (SST) method as reference measurement method for this third class of material together with a conversion factor for transposition of the SST measurement results to equivalent Epstein values; - update of the electrical steel range to take account of the current offers and demands of grades.
IEC 60404-8-8 Ed. 2.0 en:2017
Magnetic materials - Part 8-8: Specifications for individual materials - Thin electrical steel strip and sheet for use at medium frequencies
IEC 60404-8-8:2017(E) defines the grades of thin non-oriented electrical steel strip and sheet in nominal thicknesses of 0,05 mm, 0,10 mm, 0,15 mm, 0,20 mm, 0,25 mm, 0,30 mm and 0,35 mm and of thin grain-oriented electrical steel strip and sheet in nominal thicknesses of 0,05 mm, 0,10 mm, 0,15 mm and 0,18 mm. In particular, it gives general requirements, magnetic properties, geometric characteristics and tolerances, technological characteristics, as well as inspection procedures.
NOTE For thin non-oriented electrical steel strip and sheet, other nominal thicknesses (i.e. 0,12 mm, 0,18 mm, 0,23 mm and 0,27 mm) can be agreed between the manufacturer and the purchaser.
This document applies to electrical steel strip and sheet supplied in the finally annealed condition in coils or sheets and intended for the construction of magnetic circuits predominantly used at frequencies in the range from 100 Hz to 10 kHz.
This edition includes the following significant technical changes with respect to the previous edition:
- extension of the range of electrical steels to include the improved grades.
IEC 60404-8-9 Ed. 1.0 b:1994
Magnetic materials - Part 8: Specifications for individual materials - Section 9: Standard specification for sintered soft magnetic materials
Specifies some magnetic and mechanical properties of sintered soft magnetic metals which are used for components made by a powder metallurgical process only.
IEC 60404-9 Ed. 2.0 b:2018
Magnetic materials - Part 9: Methods of determination of the geometrical characteristics of electrical steel strip and sheet
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 the following significant technical changes with respect to the previous edition:
a. revision of terms and definitions;
b. specification of the length of test specimens for the determinations of edge wave (wave factor) and edge camber;
c. addition of the horizontal method for the determination of residual curvature, and a note that informs about a safety concern of the vertical method;
d. clarification that the burr height was characterized by the maximum value;
e. addition of the measuring procedure using a hand-held micrometer to determine the burr height.
IEC 60404-10 Ed. 2.0 en:2016
Magnetic materials - Part 10: Methods of measurement of magnetic properties of electrical steel strip and sheet at medium frequencies
IEC 60404-10:2016(E) is applicable to grain-oriented and non-oriented electrical steel strip and sheet for measurements of a.c. magnetic properties in the frequency range 400 Hz to 10 000 Hz. The object of this document is to define the general principles and the technical details of the measurement of magnetic properties of electrical steel strip and sheet by means of an Epstein frame. This edition includes the following significant technical changes with respect to the previous edition:
a) adaption to modern measurement and evaluation methods, in particular the introduction of the widely spread digital sampling method for the acquisition and evaluation of the measured data;
b) introduction of formal changes which adapt this standard to other standards of the 60404 series;
c) revision of the problem of the air flux compensation taking account of the condition of the higher frequencies;
d) revision of the capacitive coupling of mutual inductor windings together with the consideration of the alternative method of numerical air flux compensation.
IEC 60404-15 Ed. 1.1 b:2016
Magnetic materials - Part 15: Methods for the determination of the relative magnetic permeability of feebly magnetic materials
IEC 60404-15:2012+A1:2016 specifies a solenoid method, a magnetic moment method, a magnetic balance method and a permeability meter method for the determination of the relative magnetic permeability of feebly magnetic materials (including austenitic stainless steel). The magnetic balance and permeability meter methods are both comparison methods calibrated using reference materials to determine the value of the relative magnetic permeability of the test specimen.
This consolidated version consists of the third edition (2012) and its amendment 1 (2016). Therefore, no need to order amendment in addition to this publication.
IEC 62044-2 Ed. 1.0 b:2005
Cores made of soft magnetic materials - Measuring methods - Part 2: Magnetic properties at low excitation level
Gives guidance for the drafting of those parts of specifications for magnetic cores that are concerned with measuring methods for magnetic and electric core properties. Applies to magnetic cores, mainly made of magnetic oxides or metallic powders, used at low excitation level in inductors and transformers for telecommunication equipment and electronic devices employing similar techniques.
IEC 62044-3 Ed. 1.0 b:2000
Cores made of soft magnetic materials - Measuring methods - Part 3: Magnetic properties at high excitation level
Provides measuring methods for power loss and amplitude permeability of magnetic cores forming the closed magnetic circuits intended for use at high excitation levels in inductors, chokes, transformers and similar devices for power electronics applications.
S+ IEC 60404-1 Ed. 3.0 en:2016 (Redline version)
Magnetic materials - Part 1: Classification
IEC 60404-1:2016 RLV contains the International Standard and its Redline version. The Redline version is available in English only. The Redline version provides you with a quick and easy way to compare all the changes between this standard and its previous edition. The Redline version is not an official IEC Standard, only the current version of the standard is to be considered the official document.
IEC 60404-1:2016(E) is intended to classify commercially available magnetic materials. The term "magnetic materials" denotes substances where the application requires the existence of ferromagnetic or ferrimagnetic properties. The classification of magnetic materials is based upon the generally recognized existence of two main groups of products:
- soft magnetic materials (coercivity less than or equal to 1 000 A/m);
- hard magnetic materials (coercivity greater than 1 000 A/m). This edition includes the following significant technical changes with respect to the previous edition:
a) Removal of all tables and values describing typical properties of the material to be consistent with the aim of the document to be a classification and not a specification.
b) Enlargement of the Ni content for the classes E1 and E3.
c) Enlargement of the Co content for the classes F3.
d) Addition of a new class: U5 bonded rare earth-iron-nitrogen magnets.
IEC 60404-1 Ed. 3.0 b:2016
Magnetic materials - Part 1: Classification
IEC 60404-1:2016 is available as IEC 60404-1:2016 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.
IEC 60404-1:2016 is intended to classify commercially available magnetic materials. The term "magnetic materials" denotes substances where the application requires the existence of ferromagnetic or ferrimagnetic properties. The classification of magnetic materials is based upon the generally recognized existence of two main groups of products:
- soft magnetic materials (coercivity less than or equal to 1 000 A/m);
- hard magnetic materials (coercivity greater than 1 000 A/m). This edition includes the following significant technical changes with respect to the previous edition:
a) Removal of all tables and values describing typical properties of the material to be consistent with the aim of the document to be a classification and not a specification.
b) Enlargement of the Ni content for the classes E1 and E3.
c) Enlargement of the Co content for the classes F3.
d) Addition of a new class: U5 bonded rare earth-iron-nitrogen magnets.
S+ IEC 60404-10 Ed. 2.0 en:2016 (Redline version)
Magnetic materials - Part 10: Methods of measurement of magnetic properties of electrical steel strip and sheet at medium frequencies
IEC 60404-10:2016 RLV contains the International Standard and its Redline version. The Redline version is available in English only. The Redline version provides you with a quick and easy way to compare all the changes between this standard and its previous edition. The Redline version is not an official IEC Standard, only the current version of the standard is to be considered the official document.
IEC 60404-10:2016(E) is applicable to grain-oriented and non-oriented electrical steel strip and sheet for measurements of a.c. magnetic properties in the frequency range 400 Hz to 10 000 Hz. The object of this document is to define the general principles and the technical details of the measurement of magnetic properties of electrical steel strip and sheet by means of an Epstein frame. This edition includes the following significant technical changes with respect to the previous edition:
a) adaption to modern measurement and evaluation methods, in particular the introduction of the widely spread digital sampling method for the acquisition and evaluation of the measured data;
b) introduction of formal changes which adapt this standard to other standards of the 60404 series;
c) revision of the problem of the air flux compensation taking account of the condition of the higher frequencies;
d) revision of the capacitive coupling of mutual inductor windings together with the consideration of the alternative method of numerical air flux compensation.
IEC 60404-10 Ed. 2.0 en:2016
Magnetic materials - Part 10: Methods of measurement of magnetic properties of electrical steel strip and sheet at medium frequencies
IEC 60404-10:2016(E) is applicable to grain-oriented and non-oriented electrical steel strip and sheet for measurements of a.c. magnetic properties in the frequency range 400 Hz to 10 000 Hz. The object of this document is to define the general principles and the technical details of the measurement of magnetic properties of electrical steel strip and sheet by means of an Epstein frame. This edition includes the following significant technical changes with respect to the previous edition:
a) adaption to modern measurement and evaluation methods, in particular the introduction of the widely spread digital sampling method for the acquisition and evaluation of the measured data;
b) introduction of formal changes which adapt this standard to other standards of the 60404 series;
c) revision of the problem of the air flux compensation taking account of the condition of the higher frequencies;
d) revision of the capacitive coupling of mutual inductor windings together with the consideration of the alternative method of numerical air flux compensation.
IEC 60404-1-1 Ed. 1.0 b:2004
Magnetic materials - Part 1-1: Classification - Surface insulations of electrical steel sheet, strip and laminations "
Establishes a classification of surface insulations for electrical steel sheet, strip and laminations according to their general composition, relative insulating ability and function. These surface insulations are either oxide layers or applied coatings. The purpose of this classification is to create a nomenclature for the various types of surface insulations and to assist users of surface insulations by providing general information about the chemical nature and use of the surface insulations. It is not the intent of this classification to specify insulation requirements in terms of specific values of surface insulation resistance. Such requirements are agreed between the purchaser and the steel producer, where applicable. The classification is used in conjunction with the various specifications for cold rolled electrical steels (see the standards in the IEC 60404-8 series in Clause 2).
IEC 60404-11 Ed. 1.1 b:1999
Magnetic materials - Part 11: Method of test for the determination of surface insulation resistance of magnetic sheet and strip
Defines a measurement method for the determination of the characteristics of surface insulation resistance of magnetic sheet and strip. Applicable to magnetic sheet and strip insulated on one or both surfaces and is suitable for manufacturing control in the application of insulation coatings.
IEC 60404-11 Ed. 1.2 b:2012
Magnetic materials - Part 11: Method of test for the determination of surface insulation resistance of magnetic sheet and strip
"IEC 60404-11:1991+A1:1998+A2:2012 is intended to define a measurement method for the determination of the characteristics of surface insulation resistance of magnetic sheet and strip. This method is applicable to magnetic sheet and strip insulated on one or both surfaces and is suitable for manufacturing control in the application of insulation coatings. This consolidated version consists of the first edition (1991), its amendment 1 (1998) and its amendment 2 (2012). Therefore, no need to order amendments in addition to this publication. "
IEC 60404-11 Ed. 2.0 b:2021
Magnetic materials - Part 11: Methods of measurement of the surface insulation resistance of electrical steel strip and sheet
IEC 60404-11:2021 is applicable to electrical steel strip and sheet insulated by coating on one or both sides. The object of this document is to define the general principles and technical details of the measurement of the surface insulation resistance of electrical steel strip and sheet. NOTE This test is suitable for manufacturing and quality control in the application of insulation coatings. This edition includes the following significant technical changes with respect to the previous edition: Method B has been deleted and the measurement of individual currents through each contact button is enabled by Method A; an improved arrangement of the test apparatus and the voltage stabilizing circuit for Method A, “Arrangement B”, is introduced. an alternative layout using two pairs of contact assemblies in opposing position of the test specimen is introduced; the restriction: “The same area of the test specimen shall not be used to test both sides.” has been deleted.
IEC 60404-11 Ed. 2.0 b:2021
Magnetic materials - Part 11: Methods of measurement of the surface insulation resistance of electrical steel strip and sheet
IEC 60404-11:2021 is applicable to electrical steel strip and sheet insulated by coating on one or both sides. The object of this document is to define the general principles and technical details of the measurement of the surface insulation resistance of electrical steel strip and sheet. NOTE This test is suitable for manufacturing and quality control in the application of insulation coatings. This edition includes the following significant technical changes with respect to the previous edition: Method B has been deleted and the measurement of individual currents through each contact button is enabled by Method A; an improved arrangement of the test apparatus and the voltage stabilizing circuit for Method A, “Arrangement B”, is introduced. an alternative layout using two pairs of contact assemblies in opposing position of the test specimen is introduced; the restriction: “The same area of the test specimen shall not be used to test both sides.” has been deleted.
IEC 60404-12 Ed. 1.0 b:1992
Magnetic materials - Part 12: Guide to methods of assessment of temperature capability of interlaminar insulation coatings
This guide defines methods of test for evaluating the properties of interlaminar insulation coatings applied to magnetic steel sheet and strip in the range of temperatures from ambient to 800 ÝC as a basis for a type test.
IEC 60404-13 Ed. 2.0 b:2018
Magnetic materials - Part 13: Methods of measurement of resistivity, density and stacking factor of electrical steel strip and sheet
IECá60404-13:2018 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.á
Since these properties are functions of temperature, the measurements will be made at an ambient temperature of (23 5) C except when specified in this document.
This edition includes the following significant technical changes with respect to the previous edition:
- the sequence of the density and resistivity sections is changed and the title of the document revised to reflect this;
- the van-der-Pauw method (Method R2) is also applicable to Epstein strip specimens;
- the gas pyknometer method is introduced, and the liquid immersion method and the calculation method based on the chemical composition are quoted;
- the requirements of the stacking factor section, such as the tolerance of the dimensions of the test specimen and the repeatability of measurement, are changed;
- an example of the apparatus for determination of the resistivity using a rectangular sheet, which was previously part of the main body of the text, is moved to constitute informative Annex A;
- an example of the determination of the density by using the gas pyknometer method is added as an informative Annex B;
- an example of the determination of density based on the calculation of silicon and aluminium contents is added as an informative Annex C.
IEC 60404-14 Ed. 1.0 b:2002
Magnetic materials - Part 14: Methods of measurement of the magnetic dipole moment of a ferromagnetic material specimen by the withdrawal or rotation method
Applicable to all ferromagnetic materials. It is particularly aimed at the measurement of the magnetic dipole moment of permanent magnet (magnetically hard) materials and the measurement of the specific saturation magnetic polarization of cemented carbide materials having a ferromagnetic binder. To describe the general principles of the determination of the magnetic dipole moment of a ferromagnetic material specimen using a detection coil in an open magnetic circuit. By including a means of magnetizing the material to saturation, the saturation magnetic dipole moment can also be determined. In addition, the average magnetic polarization of a test specimen can be derived from the measurement of its magnetic dipole moment and volume. The calibration of magnetic moment coil systems and the measurement of the magnetic dipole moment of feebly magnetic materials can also be determined using this method. Measurements are normally performed at room temperature but measurements at other temperatures can be conducted by heating or cooling the volume occupied by the test specimen within the detection coil. The measurement of remanence, coercivity, maximum energy product and other parameters can be made in a closed magnetic circuit as described in IEC 60404-4 and IEC 60404-5. Measurement of the coercivity HcJ of soft and semi-hard materials can also be performed in an open circuit as described in IEC 60404-7.
IEC 60404-16 Ed. 1.0 b:2018
Magnetic materials - Part 16: Methods of measurement of the magnetic properties of Fe-based amorphous strip by means of a single sheet tester
IECá60404-16:2018 is applicable to Fe-based amorphous strips specified in IECá60404-8-11 for the measurement of AC magnetic properties at frequencies up to 400 Hz.
The object of this part is to define the general principles and technical details of the measurement of the magnetic properties of Fe-based amorphous strips by means of a single sheet tester.
IEC 60404-2 Ed. 3.1 b:2008
Magnetic materials - Part 2: Methods of measurement of the magnetic properties of electrical steel strip and sheet by means of an Epstein frame
"Applies to grain oriented and non-oriented electrical sheet and strip for a.c. measurements of magnetic properities at frequencies up to 400 Hz and for d.c. magnetic measurements. Defines the general principles and the technical details of the measurement of the magnetic properties of electrical steel sheet and strip by means of an Epstein frame. The a.c. magnetic characteristics are determined for sinusoidal induced voltages, for specified peak values of magnetic polarization and for a specified frequency. This consolidated version consists of the third edition (2000) and its amendment 1 (2008). Therefore, no need to order amendment in addition to this publication. "
IEC 60404-3 Ed. 2.2 b:2010
Magnetic materials - Part 3: Methods of measurement of the magnetic properties of electrical steel strip and sheet by means of a single sheet tester
"IEC 60404-3:1992+A1:2002+A2:2009 defines the general principles and the technical details of the measurement of the magnetic properties of magnetic sheets, at power frequencies, by means of a single sheet tester. This tester is applicable to flat plate specimens obtained from magnetic sheets and strips of any quality. The magnetic characterictics are determined for a sinusoidal induced voltage, for specified peak values of magnetic polarization and for a specified frequency. This consolidated version consists of the second edition (1992), its amendment 1 (2002), its amendment 2 (2009) and its corrigendum (2009). Therefore, no need to order amendments in addition to this publication.< /b> "
IEC 60404-4 Ed. 2.2 b:2008
Magnetic materials - Part 4: Methods of measurement of d.c. magnetic properties of magnetically soft materials
"Describes the terminology and two measuring methods, namely: the ring method and the permeameter method. Both methods use a test specimen in a closed magnetic circuit. Description of the test equipment and the electric circuits is given. This consolidated version consists of the second edition (1995) and its amendment 1 (2000). Therefore, no need to order amendment in addition to this publication. "
IEC 60404-5 Ed. 3.0 b:2015
Magnetic materials - Part 5: Permanent magnet (magnetically hard) materials - Methods of measurement of magnetic properties
IEC 60404-5:2015 is to define the method of measurement of the magnetic flux density, magnetic polarization and the magnetic field strength and also to determine the demagnetization curve and recoil line of permanent magnet materials. This edition includes the following significant technical changes with respect to the previous edition:
- adaption of the measurement methods and test conditions to newly introduced magnetically hard materials with coercivity values HcJ higher than 2 MA/m;
- update of the temperature conditions to allow the measurement of new materials with high temperature coefficients.
IEC 60404-6 Ed. 3.0 b:2018
Magnetic materials - Part 6: Methods of measurement of the magnetic properties of magnetically soft metallic and powder materials at frequencies in the range 20 Hz to 100 kHz by the use of ring specimens
IEC 60404-6:2018 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 composite materials. The object of this part is to define the general principles and the technical details of the measurement of the magnetic properties of magnetically soft materials by means of ring methods. For materials supplied in powder form, a ring test specimen is formed by the appropriate pressing method for that material. The measurement of the DC magnetic properties of soft magnetic materials is made in accordance with the ring method of IEC 60404-4. The determinations of the magnetic characteristics of magnetically soft components are made in accordance with IEC 62044-3. This edition includes the following significant technical changes with respect to the previous edition:
a) adaption to modern measurement and evaluation methods, in particular the introduction of the widely spread digital sampling method for the acquisition and evaluation of the measured data;
b)limitation of the frequency range up to 100 kHz;
c) deletion of Clause 7 of the second edition that specified the measurement of magnetic properties using a digital impedance bridge;
d) addition of a new Clause 7 on the measurementá of the specific total loss by the wattmeter method, including an example of the application of the digital sampling method;
e) addition of an informative annex on the technical details of the digital sampling technique for the determination of magnetic properties.
S+ IEC 60404-6 Ed. 3.0 en:2018 (Redline version)
Magnetic materials - Part 6: Methods of measurement of the magnetic properties of magnetically soft metallic and powder materials at frequencies in the range 20 Hz to 100 kHz by the use of ring specimens
IEC 60404-6:2018 RLV contains the International Standard and its Redline version. The Redline version is available in English only. The Redline version provides you with a quick and easy way to compare all the changes between this standard and its previous edition. The Redline version is not an official IEC Standard, only the current version of the standard is to be considered the official document.
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IEC 60404-6:2018 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 composite materials. The object of this part is to define the general principles and the technical details of the measurement of the magnetic properties of magnetically soft materials by means of ring methods. For materials supplied in powder form, a ring test specimen is formed by the appropriate pressing method for that material. The measurement of the DC magnetic properties of soft magnetic materials is made in accordance with the ring method of IEC 60404-4. The determinations of the magnetic characteristics of magnetically soft components are made in accordance with IEC 62044-3. This edition includes the following significant technical changes with respect to the previous edition:
a) adaption to modern measurement and evaluation methods, in particular the introduction of the widely spread digital sampling method for the acquisition and evaluation of the measured data;
b)limitation of the frequency range up to 100 kHz;
c) deletion of Clause 7 of the second edition that specified the measurement of magnetic properties using a digital impedance bridge;
d) addition of a new Clause 7 on the measurementá of the specific total loss by the wattmeter method, including an example of the application of the digital sampling method;
e) addition of an informative annex on the technical details of the digital sampling technique for the determination of magnetic properties.
IEC 60404-7 Ed. 2.0 b:2019
Magnetic materials - Part 7: Method of measurement of the coercivity (up to 160 kA/m) of magnetic materials in an open magnetic circuit
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 was simplified and the fluxgate probes inside the solenoid have been added;
- Clause 7: Compensation for the earth’s magnetic field and for static and dynamic magnetic noise fields has been added;
- Clause 8: Magnetic shielding of the measuring region has been added;
- 9.2.2: The measuring methods for local and integral measurement of the flux in the test specimen have been separated and the limitations in size and shape of the test specimen have been considered.
- 9:3: The method C with a VSM (Vibrating Sample Magnetometer) has been moved from 9.3 to the Annex B.
- The term "complex shaped test specimen" has been replaced in several clauses by "test specimen different from ellipsoids".
- The character of Annex A has been changed from “informative” to “normative”.
IEC 60404-8-9 Ed. 1.0 b:1994
Magnetic materials - Part 8: Specifications for individual materials - Section 9: Standard specification for sintered soft magnetic materials
Specifies some magnetic and mechanical properties of sintered soft magnetic metals which are used for components made by a powder metallurgical process only.
IEC 60404-8-1 Ed. 3.0 b:2015
Magnetic materials - Part 8-1: Specifications for individual materials - Magnetically hard materials
IEC 60404-8-1:2015 specifies minimum values for the principal magnetic properties of, and dimensional tolerances for, technically important magnetically hard materials (permanent magnets). For information purposes only, this part of IEC 60404 provides values for the densities of the materials and the ranges of their chemical compositions. Some additional physical data and mechanical reference values concerning the magnetic materials are given for information and comparison purposes. This edition includes the following significant technical changes with respect to the previous edition:
a) recently developed anisotropic Sm-Fe-N bonded magnets are included;
b) high energy ferrites with La and Co as substituents are included.
IEC 60404-8-10 Ed. 2.0 b:2009
Magnetic materials - Part 8-10: Specifications for individual materials - Magnetic materials (iron and steel) for use in relays
"IEC 60404-8-10:2009 specifies the general requirements, magnetic properties, geometric characteristics and tolerances as well as inspection procedures for magnetic materials used primarily for relays. This standard applies to pure iron, non-alloyed and alloyed steel and ferritic stainless steel products usually delivered in either the semi-processed or fully-processed state. These materials correspond to classes A, B, C and D.3 of IEC 60404-1. This second edition cancels and replaces the first edition published in 1994 and constitutes a technical revision. The main modifications from the previous edition of the standard are as follows:
- introduction of the ferritic stainless steels and the fully-processed state in the scope of the standard (see Clause 1);
- modification of the designation with the letter R at the beginning and the condition and state at the end (see Clause 5);
- introduction of the new grades R160 and R320 (see Table 2);
- modification of the requirements for the heat treatment of test specimens for semi-processed material (see Subclause 8.3.1);
- indication in Bibliography of standards referred to in this standard as an information. "
IEC 60404-8-11 Ed. 1.0 b:2018
Magnetic materials - Part 8-11: Specifications for individual materials - Fe-based amorphous strip delivered in the semi-processed state
IECá60404-8-11:2018 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 as inspection procedures.
This document applies to the rapidly-solidified Fe-based amorphous strip supplied in coils with as-cast edges and intended for the construction of magnetic circuits.
The grades are grouped into two classes:
- conventional grades;
- high permeability grades.
They correspond to Class I1 of IECá60404-1.
IEC 60404-8-3 Ed. 3.0 b:2005
Magnetic materials - Part 8-3: Specifications for individual materials - Cold-rolled electrical non-alloyed and alloyed steel sheet and strip delivered in the semi-processed state
Applies to magnetic material intended for the construction of magnetic circuits. These materials correspond respectively to classes C.21 and B.2 of IEC 60404-1: 2000. This standard defines the grades of cold-rolled electrical non-oriented non-alloyed (non alloyed steel is that steel the basic constituent of which is iron containing alloying elements in amounts smaller than the limiting values fixed by ISO 4948 1) or alloyed (alloyed steel is that steel the basic constituent of which is iron containing alloying elements in amounts equal to or greater than the limiting values fixed by ISO 4948 1) steel sheet and strip delivered in the semi-processed state, i.e. without final heat treatment, of nominal thicknesses given in Tables 1 and 2. It specifies general requirements, the magnetic properties, the geometrical characteristics and tolerances, technological characteristics as well as the inspection procedure.
IEC 60404-8-4 Ed. 3.0 b:2013
Magnetic materials - Part 8-4: Specifications for individual materials - Cold-rolled non-oriented electrical steel strip and sheet delivered in the fully-processed state
IEC 60404-8-4:2013 defines the grades of cold-rolled non-oriented electrical steel strip and sheet in nominal thicknesses of 0,35 mm, 0,50 mm, 0,65 mm and 1,00 mm. It specifies general requirements, the magnetic properties, geometric characteristics and tolerances, and technological characteristics, as well as the inspection procedure. This standard applies to materials supplied in the fully annealed condition intended for the construction of magnetic circuits. It does not apply to semi-processed material. This edition includes the following significant technical changes with respect to the previous edition:
- Deletion of the dates for all normative references;
- Introduction of the new grades M210-35A 5 and M230-50A 5.
IEC 60404-8-5 Ed. 2.0 en:2020
Magnetic materials - Part 8-5: Specifications for individual materials - Electrical steel strip and sheet with specified mechanical properties and magnetic polarization
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 grouped into two classes according to their manufacturing process: - hot-rolled grades; - cold-rolled grades. They correspond to Class D21 of IEC 60404-1. This edition includes the following significant technical changes with respect to the previous edition: a) extension of the range of products to include the improved grades; b) division of "flatness" into "edge wave (wave factor)" and "residual curvature" in consistent with IEC 60404-9; c) change length of test specimen for determinations of geometrical characters from 2 m to 1 m.
IEC 60404-8-6 Ed. 3.0 b:2016
Magnetic materials - Part 8-6: Specifications for individual materials - Soft magnetic metallic materials
IEC 60404-8-6:2016 specifies the general requirements, magnetic properties, geometric characteristics and tolerances as well as inspection procedures for pure iron, silicon-iron, nickel-iron and cobalt-iron. The materials are in the form of bar, billet, sheet, strip or wire. The alloys covered correspond to those defined by classes A, C1, C2, E1 to E4 and F1 to F3 in IEC 60404-1.
S+ IEC 60404-8-7 Ed. 4.0 en:2017 (Redline version)
Magnetic materials - Part 8-7: Specifications for individual materials - Cold-rolled grain-oriented electrical steel strip and sheet delivered in the fully processed state
IEC 60404-8-7:2017 RLV contains the International Standard and its Redline version. The Redline version is available in English only. The Redline version provides you with a quick and easy way to compare all the changes between this standard and its previous edition. The Redline version is not an official IEC Standard, only the current version of the standard is to be considered the official document.
IEC 60404-8-7:2017 defines the grades of cold-rolled grain-oriented electrical steel strip and sheet in nominal thicknesses of 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 technological characteristics, as well as inspection procedures. This document applies to Goss textured grain-oriented electrical steel strip and sheet supplied in the final annealed condition in coils or sheets, and intended for the construction of magnetic circuits.
The grades are grouped into two classes:
û conventional grades;
û high permeability grades, including grades which may be delivered in the domain refined condition. They correspond to Class C22 of IEC 60404-1.
This fourth edition cancels and replaces the third edition published in 2008. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition:
û extension of the range of electrical steels to include the improved grades.
IEC 60404-8-7 Ed. 5.0 en:2020
Magnetic materials - Part 8-7: Specifications for individual materials - Cold-rolled grain-oriented electrical steel strip and sheet delivered in the fully-processed state
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 technological characteristics, as well as inspection procedures. This document applies to Goss textured grain-oriented electrical steel strip and sheet supplied in the final annealed condition in coils or sheets, and intended for the construction of magnetic circuits. The grades are grouped into three classes: - conventional grades; - high permeability grades; - magnetic domain refined high permeability grades. They correspond to Class C22 of IEC 60404-1. This edition includes the following significant technical changes with respect to the previous edition: - insertion of a third class of grain-oriented electrical steels for magnetic domain refined high permeability grades; - introduction of the single sheet tester (SST) method as reference measurement method for this third class of material together with a conversion factor for transposition of the SST measurement results to equivalent Epstein values; - update of the electrical steel range to take account of the current offers and demands of grades.
IEC 60404-8-8 Ed. 2.0 en:2017
Magnetic materials - Part 8-8: Specifications for individual materials - Thin electrical steel strip and sheet for use at medium frequencies
IEC 60404-8-8:2017(E) defines the grades of thin non-oriented electrical steel strip and sheet in nominal thicknesses of 0,05 mm, 0,10 mm, 0,15 mm, 0,20 mm, 0,25 mm, 0,30 mm and 0,35 mm and of thin grain-oriented electrical steel strip and sheet in nominal thicknesses of 0,05 mm, 0,10 mm, 0,15 mm and 0,18 mm. In particular, it gives general requirements, magnetic properties, geometric characteristics and tolerances, technological characteristics, as well as inspection procedures.
NOTE For thin non-oriented electrical steel strip and sheet, other nominal thicknesses (i.e. 0,12 mm, 0,18 mm, 0,23 mm and 0,27 mm) can be agreed between the manufacturer and the purchaser.
This document applies to electrical steel strip and sheet supplied in the finally annealed condition in coils or sheets and intended for the construction of magnetic circuits predominantly used at frequencies in the range from 100 Hz to 10 kHz.
This edition includes the following significant technical changes with respect to the previous edition:
- extension of the range of electrical steels to include the improved grades.
IEC 60404-9 Ed. 2.0 b:2018
Magnetic materials - Part 9: Methods of determination of the geometrical characteristics of electrical steel strip and sheet
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 the following significant technical changes with respect to the previous edition:
a. revision of terms and definitions;
b. specification of the length of test specimens for the determinations of edge wave (wave factor) and edge camber;
c. addition of the horizontal method for the determination of residual curvature, and a note that informs about a safety concern of the vertical method;
d. clarification that the burr height was characterized by the maximum value;
e. addition of the measuring procedure using a hand-held micrometer to determine the burr height.
S+ IEC 60404-5 Ed. 3.0 en:2015 (Redline version)
Magnetic materials – Part 5: Permanent magnet (magnetically hard) materials – Methods of measurement of magnetic properties
IEC 60404-5:2015 RLV contains the International Standard and its Redline version. The Redline version is available in English only. The Redline version provides you with a quick and easy way to compare all the changes between this standard and its previous edition. The Redline version is not an official IEC Standard, only the current version of the standard is to be considered the official document.<br /><br />
IEC 60404-5:2015 is to define the method of measurement of the magnetic flux density, magnetic polarization and the magnetic field strength and also to determine the demagnetization curve and recoil line of permanent magnet materials. This edition includes the following significant technical changes with respect to the previous edition:<br />
- adaption of the measurement methods and test conditions to newly introduced magnetically hard materials with coercivity values HcJ higher than 2 MA/m;<br />
- update of the temperature conditions to allow the measurement of new materials with high temperature coefficients.
IEC 60404-11 Ed. 1.1 b:1999
Magnetic materials - Part 11: Method of test for the determination of surface insulation resistance of magnetic sheet and strip
Defines a measurement method for the determination of the characteristics of surface insulation resistance of magnetic sheet and strip. Applicable to magnetic sheet and strip insulated on one or both surfaces and is suitable for manufacturing control in the application of insulation coatings.
IEC 60404-11 Ed. 1.2 b:2012
Magnetic materials - Part 11: Method of test for the determination of surface insulation resistance of magnetic sheet and strip
"IEC 60404-11:1991+A1:1998+A2:2012 is intended to define a measurement method for the determination of the characteristics of surface insulation resistance of magnetic sheet and strip. This method is applicable to magnetic sheet and strip insulated on one or both surfaces and is suitable for manufacturing control in the application of insulation coatings. This consolidated version consists of the first edition (1991), its amendment 1 (1998) and its amendment 2 (2012). Therefore, no need to order amendments in addition to this publication. "
IEC 60404-12 Ed. 1.0 b:1992
Magnetic materials - Part 12: Guide to methods of assessment of temperature capability of interlaminar insulation coatings
This guide defines methods of test for evaluating the properties of interlaminar insulation coatings applied to magnetic steel sheet and strip in the range of temperatures from ambient to 800 ÝC as a basis for a type test.
IEC 60404-13 Ed. 2.0 b:2018
Magnetic materials - Part 13: Methods of measurement of resistivity, density and stacking factor of electrical steel strip and sheet
IECá60404-13:2018 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.á
Since these properties are functions of temperature, the measurements will be made at an ambient temperature of (23 5) C except when specified in this document.
This edition includes the following significant technical changes with respect to the previous edition:
- the sequence of the density and resistivity sections is changed and the title of the document revised to reflect this;
- the van-der-Pauw method (Method R2) is also applicable to Epstein strip specimens;
- the gas pyknometer method is introduced, and the liquid immersion method and the calculation method based on the chemical composition are quoted;
- the requirements of the stacking factor section, such as the tolerance of the dimensions of the test specimen and the repeatability of measurement, are changed;
- an example of the apparatus for determination of the resistivity using a rectangular sheet, which was previously part of the main body of the text, is moved to constitute informative Annex A;
- an example of the determination of the density by using the gas pyknometer method is added as an informative Annex B;
- an example of the determination of density based on the calculation of silicon and aluminium contents is added as an informative Annex C.
IEC 60404-14 Ed. 1.0 b:2002
Magnetic materials - Part 14: Methods of measurement of the magnetic dipole moment of a ferromagnetic material specimen by the withdrawal or rotation method
Applicable to all ferromagnetic materials. It is particularly aimed at the measurement of the magnetic dipole moment of permanent magnet (magnetically hard) materials and the measurement of the specific saturation magnetic polarization of cemented carbide materials having a ferromagnetic binder. To describe the general principles of the determination of the magnetic dipole moment of a ferromagnetic material specimen using a detection coil in an open magnetic circuit. By including a means of magnetizing the material to saturation, the saturation magnetic dipole moment can also be determined. In addition, the average magnetic polarization of a test specimen can be derived from the measurement of its magnetic dipole moment and volume. The calibration of magnetic moment coil systems and the measurement of the magnetic dipole moment of feebly magnetic materials can also be determined using this method. Measurements are normally performed at room temperature but measurements at other temperatures can be conducted by heating or cooling the volume occupied by the test specimen within the detection coil. The measurement of remanence, coercivity, maximum energy product and other parameters can be made in a closed magnetic circuit as described in IEC 60404-4 and IEC 60404-5. Measurement of the coercivity HcJ of soft and semi-hard materials can also be performed in an open circuit as described in IEC 60404-7.
IEC 60404-15 Ed. 1.1 b:2016
Magnetic materials - Part 15: Methods for the determination of the relative magnetic permeability of feebly magnetic materials
IEC 60404-15:2012+A1:2016 specifies a solenoid method, a magnetic moment method, a magnetic balance method and a permeability meter method for the determination of the relative magnetic permeability of feebly magnetic materials (including austenitic stainless steel). The magnetic balance and permeability meter methods are both comparison methods calibrated using reference materials to determine the value of the relative magnetic permeability of the test specimen.
This consolidated version consists of the third edition (2012) and its amendment 1 (2016). Therefore, no need to order amendment in addition to this publication.
IEC 60404-16 Ed. 1.0 b:2018
Magnetic materials - Part 16: Methods of measurement of the magnetic properties of Fe-based amorphous strip by means of a single sheet tester
IECá60404-16:2018 is applicable to Fe-based amorphous strips specified in IECá60404-8-11 for the measurement of AC magnetic properties at frequencies up to 400 Hz.
The object of this part is to define the general principles and technical details of the measurement of the magnetic properties of Fe-based amorphous strips by means of a single sheet tester.
