提供了在高温下测量磁性硬质材料的方法。IEC 60404-1对磁性硬质材料（永磁体材料）进行了分类，IEC 60404-8-1对其性能进行了规定。 IEC 60404-5对闭合磁路和IEC 60404-7对开放磁路分别规定了室温下硬磁材料磁性能的测量方法。磁性硬质材料的应用现在正在扩展到高温，因此需要规定和保证这些材料在其工作温度范围内的磁性能。 IEC 60404-8-1规定了剩磁（或饱和）和J矫顽力的温度系数，以及最大磁能积（BH）max、剩磁（Br）、B矫顽力（HcB）、J矫顽性（HcJ）、反冲磁导率（μrec）和密度等基本特性。

Provides methods for measuring magnetically hard materials, at elevated temperatures. Magnetically hard materials (permanent magnet materials) are classified in IEC 60404-1 and their properties are specified in IEC 60404-8-1. The methods of measurement of the magnetic properties of magnetically hard materials at room temperature have been specified in IEC 60404-5 for closed magnetic circuits and in IEC 60404-7 for open magnetic circuits, respectively. The applications of magnetically hard materials are now expanding to elevated temperatures and it is therefore required to specify and guarantee the magnetic properties of these materials over their working temperature range. In IEC 60404-8-1 temperature coefficients of remanence (or saturation) and J-coercivity have been specified in addition to basic properties such as maximum magnetic energy product ((BH)max), remanence (Br), B-coercivity (HcB), J-coercivity (HcJ), recoil permeability (μrec) and density.