27/01/2021, Wed

Sm2Co17 magnets

Institute/Department name


Materials engineering department


Product Type




Product Name


Sm2Co17 magnets


Product Description


A samarium–cobalt (SmCo) magnet, a type of rare earth magnet, is a strong permanent magnet made of an alloy of samarium and cobalt. They are available in two "series", namely Series 1:5 and Series 2:17. The latter has the best temperature coefficient off all rare earth magnets and can also be used for higher temperatures than the SmCo5 series or the neodymium series. Sm2Co17 magnets can be used up to a recommended working temperature of 350° Celsius. Samarium Cobalt magnets are weaker than NdFeB magnets at room temperature. But Sm2Co17 magnets will often outperform neodymium magnets when temperatures will be above 150 degree celsius (subject to the application, magnet geometry and grade). SmCo Rare Earth magnets are very resistant to corrosion and do not normally require any surface treatment. These alloys have the best reversible temperature coefficient of all rare-earth alloys, typically being -0.03%/°C.


Product Application

  • Applications that will require the system to function at cryogenic temperatures or very hot temperatures (over 180 °C)
  • Applications in which performance is required to be consistent with temperature change
  • high field yoke magnets
  • high performance stepper, DC, servo, linear, and voice coil motors
  • magnetic bearings
  • magnetic couplings
  • loudspeakers
  • Halbach arrays
  •  headphones, microphones
  • magnetic separation
  • Switches, relays
  • magnetic resonance
  • Sputtering, vacuum deposition
  • Charged particle beam guidance, particle accelerators


Product Specifications


Magnetic properties

Residual Induction Br

kG (mT)

11-11.6  (1100-1160)


Coercive Force Hcb


10.0 (796)


Intrinsic Coercive Force Hcj


24-26 (1910-2070)


Energy Product (BH)max


28-30 (220-240)


Max. Operating Temp.





Physical properties

Density (g/cm3)


Modulus of elasticity (GPa)


Ultimate tensile strength (MPa)


Coefficient of thermal expansion (10-6 /°C)

Perpendicular to orientation

Parallel to orientation





Electrical resistivity

(Ω-cm × 10-6) at 20 °C





Product functional specifications


It’s customizable up to customer order

Approved and adopted standards


Approved by the Metal Materials Domestic industry and the industries of Shahid Hadi

Similar foreign products


Rare Earth Cobalt magnet, Sm2Co17

Product pictures:

Total Hits : 17393547
Views Today: 3636
Yesterday visits : 8374
Number Online: 31