IEC 60404-6:20 18+A1:2021规定了在20 Hz至100 kHz频率范围内测量软磁材料（电工钢和软铁氧体除外）的交流磁性能的方法。IEC 60404这一部分涵盖的材料包括IEC 60404-8-6中列出的特种合金、非晶和纳米晶软磁性材料、压制和烧结以及金属注射成型部件（如IEC 60404-8-9中列出的部件）、铸件和软磁复合材料。本部分的目的是定义通过环法测量软磁材料磁性能的一般原理和技术细节。对于以粉末形式供应的材料，通过用于该材料的适当压制方法形成环形试样。根据IEC 60404-4的环法测量软磁材料的DC磁性。根据IEC 62044-3确定软磁性部件的磁特性。与上一版相比，此版本包括以下重大技术变更: a)适应现代测量和评估方法，特别是采用广泛传播的数字采样方法来获取和评估测量数据； b)将频率范围限制到100kHz； c)删除第二版第7条，该条规定使用数字阻抗电桥测量磁性能； d)新增关于瓦特计法测量特定总损耗的第7条，包括数字采样法应用实例；e)增加一个信息性附件，介绍用于测定磁性的数字采样技术的技术细节。 2018年11月勘误表的内容已纳入本副本。

IEC 60404-6:2018+A1:2021 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 measurement 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.
The contents of the corrigendum of November 2018 have been included in this copy.