磁性材料 第1部分:分类

[中文适用范围]： IEC 60404 的这一部分旨在对市售磁性材料进行分类。术语“磁性材料”表示应用中需要存在铁磁或亚铁磁特性的物质。在本文件中，磁性材料的分类基于公认的两大类产品的存在：软磁材料（矫顽力1000 A/m）；硬磁材料（矫顽力 >1 000 A/m）。在这些主要群体中，适当的分类可识别以下特征；主要合金元素及材料的冶金状态和物理性能；在可能且方便的情况下，确定这些特征之间的关系。按特定应用领域的分类不能适用于所有材料，因为根据所需的特性，不同的材料通常可以用于相同的应用。 [外文原描述]： 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.