High-temperature magnetic sheets typically refer to magnetic sheets that maintain excellent magnetic properties even in high-temperature environments. This article introduces several high-temperature-resistant magnetic sheet materials to assist you in making an informed selection.
First is samarium-cobalt magnet sheets, one of the most common high-temperature magnet materials. They can withstand elevated temperatures (250°C–350°C) and, in addition to high-temperature resistance, exhibit excellent corrosion resistance. Therefore, they are generally not plated and find widespread application in aerospace, military, and automotive industries.
5x1mm Samarium Cobalt Magnet Disc Sheets

The second type is neodymium iron boron magnet sheets. Neodymium magnets also come in high-temperature grades, such as SH grade and above, which can withstand temperatures exceeding 150°C. This meets the requirements for a significant portion of applications, and most importantly, their magnetic strength surpasses that of samarium cobalt magnets.
The third type is ferrite magnet sheets. While their high-temperature resistance is inferior to samarium-cobalt magnets, they still perform quite well. Most importantly, this material offers the lowest cost among these options and boasts excellent corrosion resistance.
For high-temperature magnetic discs, samarium-cobalt and ferrite magnets are most commonly used due to their superior high-temperature performance, maintaining stable magnetic properties at elevated temperatures. For applications requiring operation in extremely high-temperature environments (e.g., exceeding 250°C), samarium cobalt magnets are the preferred choice. If the operating temperature is not excessively high (100-150°C) and a certain level of magnetic force is required, high temperature grade neodymium magnets represent a suitable alternative.
High-temperature magnet-related content;
China Neodymium And Ferrite Magnets Manufacturer & Supplier