Sm₂Co₁₇ (2:17 Series)

The Sm₂Co₁₇ series is the industry standard for high-performance applications, offering higher magnetic energy products and superior temperature characteristics . Capable of operating continuously at up to 350°C, these magnets feature an extremely low temperature coefficient (as low as -0.035%/°C), ensuring stable magnetic flux across a wide temperature range . The unique cellular microstructure of Sm₂Co₁₇ magnets—with iron-rich cells surrounded by copper-rich cell boundaries—creates a strong domain wall pinning effect that delivers high intrinsic coercivity . Despite containing small amounts of iron, these magnets maintain good corrosion resistance far superior to NdFeB alternatives . Tecomag Sm₂Co₁₇ magnets are the preferred choice for aerospace actuators, high-temperature motors, military systems, and down-hole drilling equipment where failure is not an option .