permanent magnet

High-temperature resistant Magnets

permanent magnet

High-temperature resistant Magnets

Temperature resistant 550 ℃ magnets

Temperature resistant 550 ℃ magnets are mainly divided into two series: 1:5 type (High-temperature resistant5) and 2:17 type (Second generation rare earth magnets). Sintered Temperature resistant 550 ℃ magnets are brittle and fragile, and cannot be machined using traditional methods; instead, grinding wheels with a high content of diamond must be used, along with water or oil for cooling. Performance: The Curie temperature of Cobalt magnet can reach 710-880°C, and the highest operating temperature can reach 250-350°C, which is higher than the 230°C maximum operating temperature of neodymium-iron-boron; Cobalt magnet has better corrosion resistance compared to neodymium-iron-boron; when the operating temperature is above 150°C, Cobalt magnet has lower magnetic flux loss compared to neodymium-iron-boron; the 1:5 type Cobalt magnet (High-temperature resistant5).

High-temperature resistant Magnets-NdFeB Magnet factory

Magnetic Properties

Material	Grade	Br		Hcb		Hcj		(BH)max		Tc	Tw
Material	Grade	kGs	mT	kA/m	kOe	kA/m	kOe	KJ/m³	MGOe	°C	°C
High-temperature resistant (1:5)	SM-18	8.5	850	620	7.8	≥1350	≥17	145~150	17~19	750	250
	SM-20	9.0~9.6	900~960	653~717	8.2~9.0	1194~1513	15~19	150~175	19~22	750	250
	SM-22	9.3~10.0	930~1000	660~772	8.3~9.7	1194~1751	15~22	159~191	20~24	750	250
	SM-24	9.6~10.4	960~1040	660~780	8.3~9.8	1194~1751	15~22	175~207	22~26	750	250
High-temperature resistant (2:17)	SMG-24	9.5~10.2	950~1020	637~732	8.0~9.2	1433~1990	18~25	175~190	22~24	800	300
	SMG-26	10.2~10.5	1020~1050	748~796	9.4~10.0	1433~1990	18~25	195~215	24~26	800	300
	SMG-28	10.5~10.8	1050~1080	756~796	9.5~10.0	1433~1831	18~23	205~220	26~28	800	300
	SMG-30	10.7~11.2	1070~1120	677~820	8.5~10.3	≥1194	≥15	223~247	28~31	800	300
	SMG-32	10.9~11.5	1090~1150	677~820	8.5~10.3	≥955	≥12	238~262	29~32	800	300

Surface Treatment

The corrosion resistance of High-temperature resistant is considered good while that of NdFeB is considered poor. Coatings for corrosion resistance are therefore not generally required for High-temperature resistant magnets. We also can offer coatings such as Ni, Zn, or Epoxy if they are used in corrosive environment.

Temperature Characteristics

High-temperature resistant magnets can operate at temperatures up to 350°C, depending upon the grade and permeance coefficient. Second generation rare earth magnets materials exhibit superior temperature characteristics as compared to the Cobalt magnet types. High-temperature resistant magnets have extremely resistant to demagnetization, and good temperature stability (maximum use temperatures between 250 °C and 550 °C).

Application

The versatility of High-temperature resistant permanent magnets finds application across a diverse range of industries where magnetic stability and performance are paramount. Notably, it is a cornerstone material in critical sectors such as aerospace, defense, telecommunications, medical instrumentation, and electric motors, where demanding operating conditions necessitate the exceptional magnetic properties and reliability that High-temperature resistant magnets provide.

Free Estimation

Request A Quote

If you need customized permanent magnet and assemblies, please do not hesitate to contact us for further details.

Get A Quote

High-temperature resistant Magnets

permanent magnet

High-temperature resistant Magnets

permanent magnet