This page lists the magnetic and physical properties of Sm1Co5 and Sm2Co17 magnets, the two samarium cobalt series we produce.
SmCo combines high magnetic output, extreme temperature stability and corrosion resistance, making it the material of choice for harsh environments.
Key Specifications
| Specification | Value |
|---|---|
| Br remanence | 9.0 – 11.8 kGs (0.9 – 1.18 T) |
| Hcj coercivity | 18 – 28 kOe |
| (BH)max | 15 – 34 MGOe |
| Max working temp | 250 – 350 °C |
| Curie temperature | 750 – 800 °C |
| Temperature coefficient | -0.03 to -0.04 %/°C |
| Density | 8.3 – 8.5 g/cm³ |
All magnets are produced to order. Please provide grade, dimension (or drawing), magnetization direction, coating and quantity for quotation. Email sales@polemagnet.com or use the inquiry form — we reply within 24 hours.
FAQ
SmCo Magnet Properties — FAQ
What is the reversible temperature coefficient of SmCo?
SmCo has a very low reversible temperature coefficient of about -0.03 to -0.04 %/°C, meaning its flux stays remarkably stable across temperature, ideal for precision instruments.
Which SmCo series has the highest energy product?
Sm2Co17 provides the highest energy product (up to about 34 MGOe), while Sm1Co5 offers the highest coercivity and thermal stability.
Do you provide free samples for testing?
Yes, sample orders are welcome. Send your drawing or specification together with the intended application so our engineers can recommend the correct grade, magnetization direction and coating before we prepare samples.
Can the factory produce to my drawing with special tolerances?
Yes. We machine, grind and inspect to customer drawing tolerances. For sintered NdFeB the standard machining tolerance is ±0.05 mm and can be tightened to ±0.02 mm with diamond grinding where the geometry allows.
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Send your drawing, grade, magnetization direction and quantity. Our engineers will reply with a quotation within 24 hours.