Samarium Cobalt (SmCo) magnets are sintered permanent magnets made from samarium, cobalt and rare earth elements. They feature high magnetic energy product and extremely low temperature coefficient, with a maximum operating temperature up to 350℃.

Their magnetic performance at room temperature is slightly lower than that of NdFeB magnets. However, at temperatures above 180℃, SmCo magnets outperform NdFeB in temperature stability, demagnetization resistance and chemical stability.

SmCo magnets offer excellent corrosion and oxidation resistance, generally requiring no surface coating. As a sintered material, they are relatively brittle.

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With outstanding high-temperature stability, they are widely used in aerospace, microwave devices, telecommunications, medical equipment, sensors and precision motors.

SmCo Magnet

SmCo5 alloy belongs to the first-generation samarium cobalt magnets, mainly composed of samarium and cobalt without iron.

Compared with 2:17 type SmCo magnets, 1:5 type SmCo features better corrosion resistance and demagnetization resistance.

2:17 type samarium cobalt (Sm₂Co₁₇) offers higher magnetic properties than SmCo₅, containing small amounts of other elements such as iron and copper.

The presence of iron may cause slight corrosion in high-humidity environments, so surface coatings like Ni or Zn plating are commonly applied to Sm₂Co₁₇ magnets.

Processing Technologies We Provide:

Mechanical Processing

After sintering, SmCo magnets undergo grinding, cutting and other mechanical processing.

We are equipped with various grinders, slicers and multi-wire cutting machines, enabling precise machining to meet your final shape and tolerance requirements.

EDM Machining

EDM is ideal for processing hard SmCo magnets, allowing complex cutting and shaping with minimal mechanical stress, thus reducing the risk of cracking.

​​​​​​​We own high-speed and medium-speed wire-cut EDM machines to support profile cutting of SmCo materials.

​​​​​​​Laser Cutting

​​​​​​​Laser cutting delivers higher precision for complex shapes with good quality and less material waste.

It is suitable for ultra-thin products, while thick products may not be penetrable by laser.

​​​​​​​Special Profile Grinding

​​​​​​​With custom grinding wheels and fixtures, we perform precision grinding on magnet surfaces to achieve high surface finish and dimensional accuracy.

​​​​​​​Drilling

​​​​​​​Due to the high hardness and difficult machinability of SmCo magnets, drilling requires specially designed consumables and tooling, which we are fully equipped with.

​​​​​​​Custom Shapes

​​​​​​​We can produce SmCo magnets into various special shapes, including rings, flats, embedded designs and more.

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ABOUT  US

FAQ

Q: Are you trading company or manufacturer ?
A: We are a professional manufacturer of magnets and magnetic application magnets more than 10 years, support any customization based on customers' requirements.

Q: What is MOQ?
A: We offer flexible MOQ (even no MOQ) exclusively for qualified commercial buyers / distributors, our core advantage lies in large-scale bulk supply with stable quality and factory price.

Q: What is the normal lead time?
A: For stock products, we will send goods to you within 7 days after receiving the payment.
If we do not have them in stock, generally speaking, production time is 10-20 days.

Q: Do you provide samples?  Is it free or extra?
A: Yes, we could sent you the sample in stock to check the quality for free charge but do not pay the cost freight.

Q: What information do I need to supply when I have a inquiry?
A: If you have any inquiry,please kindly advise the following items:
-Product shape, size, grade, coating, working temperature(normal or high temperature)magnet direction, etc.
-Order quantity.
-Attached the drawing if customized.
-Any special packing or other requirements.

Q: How can we guarantee quality?
A: Always a pre-production sample before mass production;
Always final Inspection before shipment;
we have joined the Trade Assurance on Alibaba to protect your payment to make sure that we deliver on time and manufacture quality products as required.