Samarium Cobalt rare earth magnets are often used in high temperature applications needing high magnetic performance and where magnetic stability over a wide range of temperatures is important. Dura can help optimize performance and cost with SmCo magnets in grades from 16 to 32 MGOe and temperatures up to 350°C/662°F. SAMARIUM COBALT MAGNETS Since the introduction of rare earth magnets in the 1970s, Electron Energy Corporation (EEC) has been the preferred source for manufacturing and supplying samarium cobalt magnets (SmCo). As the first commercially viable rare earth permanent magnet material, Samarium Cobalt (Sm-Co) is considered to still be the premium material for many high performance applications. Formulated in the 1960s, it came as a revolutionary product, initially tripling.
Samarium Cobalt Magnets for Sale – Samarium Cobalt Magnet Suppliers
When it comes to high working temperature application, neo magnet lost its advantage. Here we will introduce samarium cobalt magnets for sale that output high magnetic force, but also can work under 250-350°C.
What is Samarium–Cobalt Magnet?
Samarium–Cobalt Magnet is strong permanent rare earth magnet made of an alloy of samarium, cobalt, Fe, Cu, Pr and Zr. They are generally ranked similarly in strength to neodymium magnets with high maximum energy products (BHmax. 16-32 MGOe), high coercive force and high remanence.
Samarium Cobalt magnets are available in two “series”, namely SmCo5 (1:5) and Sm2Co17 (2:17).
SmCo5 Magnets
- SmCo5 magnet is mainly made of samarium and cobalt or using Pr to replace part of samarium. Because all these metals are rare earth materials, smco5 magnets’ price is higher than Sm2Co17.
- Its maximum energy product, (BH) max range is from 16-25 MGOe. Although lower (BH) max than Sm2Co17, smco5 has better mechanical property and malleability. It’s prone to make complex shapes and sizes, such as thin disc, ring, block or other irregular shapes.
- SmCo5 has very good corrosion resistance and long-term thermal stability. No surface coating is necessary. SmCo5 can work high temperatures up to 250°C.
Sm2Co17
- Sm2Co17 is mainly made of samarium, cobalt, Cu, Iron and Zr. Its maximum energy product, (BH) max range is from 20-32 MGOe. It has extremely low reversible temperature coefficient of induction -0.030%/°C and can be used at temperatures up to 350°C.
- Sm2Co17 magnet is highly brittle and no malleability. So it can’t used as structural parts and it is difficult to make very thin or complex shape, and small unfilled corners will be caused in the process of machining, inspection or magnetization as well. But if these small unfilled corners don’t affect magnetic properties or function, we consider them as qualified.
SmCo Magnet Grades
You can find detailed grade information from our SmCo Magnet Grade Page.
Magnetization Direction
You also can find detailed information from our SmCo Magnet Pole Direction Page.
Surface Treatment on Samarium Cobalt Magnets for Sale
From samarium cobalt chemical composition, we know they contain iron. But compared to neodymium magnets, they have better corrosion resistance because of little or no iron. Therefore, for most applications smco magnets do not require any coating or plating. If you want to ask when a coating is required, there are three situations: Civ 5 scenarios strategy.
- Operating in environments that are acidic, have high moisture, or are in a vacuum
- Using smco magnet as outer parts and for nice appearance
- Using coating to protect brittle smco from cracking and chipping. NiCuNi triple plated is a good protective layer.
You can find more about coating from our SmCo Magnet Plating Page.
What Are Samarium Cobalt Magnets Used for?
Due to excellent properties, we hardly can see any samarium cobalt magnets in daily supplies. They are mainly used in aerospace, national defense, microwave devices, communication, medical equipment, instruments, and meters, all kinds of magnetic transmission device, sensors, magnetic processor, motors and magnetic crane. Food trak user manual.
Obviously, sintered SmCo Magnets are specifically invented for high-end products.
Samarium Cobalt Magnets vs Neodymium
Both magnets are permanent rare earth magnet. More comparison please see the table below.
Parameter | Samarium Cobalt | Sintered Neodymium |
Remanence / Br | 6.2-11.5 kGs | 11.7-14.8 kGs |
Coercive Force / Hcb | 6.1-10.8 kOe | ≥13 kOe |
Intrinsic Coercive Force / Hcj | ≥4.5 kOe | ≥35 kOe |
Maximum Energy Product / (BH)max. | 9.5-32 MGOe | 33-52 MGOe |
Max. Working Temperature | 250-350°C | 60-220°C |
Reversible temp coefficients (Br) | -0.015 to -0.04 %/°C | -0.08 to -0.12 %/°C |
Density | 8.3-8.4 g/cm2 | 7.5g/cm2 |
Corrosion Resistance | bad | good |
Samarium Cobalt Magnet Suppliers
China Magnets Source Material Limited, owing to mature production technology and advanced equipment, can produce a variety of shapes, high and stable performance of samarium cobalt products. We also provide technical assistance in the process of your magnet design if necessary. Please feel free to contact us if you have any smco magnet or assembly requirement.
SmCo Magnet Manufacturers – Buy Samarium Cobalt Magnets From Factory
China Magnets Source Material Limited is a SmCo magnet manufacturers. With many years’ experience in magnet production, we can provide high quality samarium cobalt ring magnets, samarium cobalt disc magnets, samarium cobalt block magnets, smco pot magnet and arc SmCo magnets.
Samarium Cobalt Rare Earth Permanent Magnets
Samarium Cobalt Magnets Properties
Compared to NdFeB magnets, SmCo magnets offers unique capabilities such as higher energy density at elevated temperatures. https://xlloading392.weebly.com/shareit-2-for-pc-windows-xp.html. Their maximum operating temperature is ≥250 °C, which strongly exceed those of NdFeB permanent magnets. SmCo flux output varies much less with respect to temperature, meaning the device performance can truly be optimized. Click and find SmCo Magnet Grades here.
Industrial Uses of Magnets
Therefore, we usually use SmCo magnets for high-temperature applications, such as turbomachinery, motor rotors of high-end electric cars and magnetic agitator drives. Samarium cobalt block in grade of Sm2Co17 is also very common in the laboratory for scientific research project or experimental study. For eaxample, CERN use our magnet on accelerator.
Samarium Cobalt Magnet Price
Another difference with NdFeB magnets is that the supply risk and price instability of SmCo magnets do not depend on the rare-earth element – Sm, but rather on the cobalt in the magnet alloy. Therefore, the price of Samarium Cobalt block material is more stable.
SmCo Magnet Manufacturers
As smco5 & sm2co17 magnet manufacturer, we supply Samarium Cobalt for mass production at factory price. But we also custom smco magnets for prototype development and low-volume production.
Samarium Cobalt Force
Are you interested in learning more about what we have to offer you? We are more than happy to provide additional information about our magnetic products. For product pricing details, ordering information, or any other questions you have, contact us through the form below.
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Please be sure to include your name, email and the specific product in question. You will receive a confirmation after submitting the form, and we will respond as quickly as possible for your satisfaction.