Welcome to Hesheng Magnet Co., Ltd.！
Quick Support via WhatsApp
Get instant price, sample photos & technical data sheet within 10 minutes.
Chat NowWhatsApp: +8618134502123
The dimensions of block SmCo magnets are defined by three parameters: length, width and thickness. Per industry standard, the dimension along the magnetization direction is marked as thickness.
Standard blocks adopt axial magnetization along the thickness direction. Custom magnetization along the length or width can be developed for special magnetic circuit designs to match assembly structures of various high-temperature equipment.
Performance Grades: Please refer to our full SmCo grade performance datasheet.
Magnetization Direction: Customizable according to customers’ magnetic circuit design and equipment installation requirements.
Block SmCo magnets are manufactured with precisely proportioned rare metals including samarium, cobalt, iron, copper and zirconium. They are divided into two major systems: SmCo₅ (1:5 type) and Sm₂Co₁₇ (2:17 type). Formed via vacuum metallurgy melting processes, they feature extremely low magnetic loss under high-temperature environments.
Samarium-cobalt permanent magnets are categorized into Type 1:5 with low temperature coefficient and Type 2:17 with high magnetic energy product. Both types deliver far superior high-temperature stability and demagnetization resistance compared to NdFeB magnets. As high-end heat-resistant rare earth permanent magnets, they are widely applied in special industries, military and aerospace fields.
Raw material batching → Vacuum melting → Powder preparation → Oriented compression molding → High-temperature sintering → Precision machining → Surface protection → Magnetization for finished products
Precision machining covers slicing, wire cutting, precision surface grinding, chamfering and drilling, delivering tight dimensional tolerances and high flatness for block magnets.
SmCo magnets possess better inherent rust resistance than NdFeB magnets. Passivation treatment is sufficient for normal working conditions. For humid, acid-alkali and downhole corrosive environments, optional protective treatments such as zinc plating, nickel plating, epoxy coating and electrophoresis are available to extend service life.
Aerospace components, high-temperature sensors, petroleum downhole detection instruments, vacuum equipment, high-temperature precision motors, military electronics, metallurgical high-temperature testing equipment, special precision instruments and other scenarios with high temperature and corrosive conditions.
