SmCo block magnets are used in sensors, actuators, valves, medical instruments and extreme-environment equipment where temperature stability and corrosion resistance are critical.
We supply blocks from small instrument sizes to substantial assemblies, magnetized through the thickness or across the length.
Key Specifications
| Specification | Value |
|---|---|
| Grades | Sm1Co5, Sm2Co17 |
| Sizes | From 3×3×1 mm up to large blocks |
| Max working temp | Up to 350 °C |
| Magnetization | Thickness, length, or custom |
| Corrosion | Inherent, no coating required |
| Applications | Sensors, actuators, medical, oilfield |
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 Block Magnets — FAQ
Do SmCo blocks need coating?
No. SmCo is highly corrosion-resistant and typically used without coating, though nickel plating is available where appearance or extra protection is required.
What is the price difference vs NdFeB?
SmCo is significantly more expensive than NdFeB due to cobalt and samarium content, so it is selected mainly for high-temperature or high-reliability applications.
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.
Need Custom Magnets for Your Project?
Send your drawing, grade, magnetization direction and quantity. Our engineers will reply with a quotation within 24 hours.