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Samarium Cobalt Magnets

Professional Samarium Cobalt Magnets Manufacturer

We're a tech and innovation-driven company specializing in magnetic material products. Products such as our super strong disc magnets, super strong magnet bars, custom neodymium magnet, and samarium cobalt rod magnet showcase cutting-edge technology and a dedication to engineering excellence. By pushing technological boundaries, we ensure our products deliver superior performance and reliability.

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Why Choose Us

Production Equipment

We have hydrogen breakers, magnetizers, automatic welding machines, automatic bending machines, laser cutting machines, metal detectors and other equipment. And the perfect quality inspection equipment and system makes us have stable quality.

Quality Assurance

We always feel that all success of our company is directly related to the quality of the products we offer. They meet the highest quality requirements as stipulated in ISO9001, ISO14000:14001 SGS guidelines and our stringent quality control system.

Global Market

We then expanded into international sales to provide more products for Europe, North America, Middle East and South East Asia regions. In addition to magnetic assemblies, we also have neodymium magnets, samarium cobalt magnets and other magnets for electric motors, and magnets for buttons.

Customized Service

Our sales staff will provide customized product solutions for each customer. Our extremely fast response policy ensures that every customer inquiry is answered within 12 hours (business days).

Specification Parameter

Product Information
Product name	Samarium Cobalt Magnets, Permanent SmCO Magnet
Material	35% samarium (Sm) and 60% cobalt (Co) with small amounts of iron (Fe), copper (Cu), hafnium (Hf), zirconium (Zr) and praseodymium (Pr).
Grade & working Temperature	Grade	Max Operating Temperatures
	YX-18	250°C (750°F)
	YX-24	250°C (750°F)
	YX-26	250°C (750°F)
	YXG-24	300°C (800°F)
	YXG-26	300°C (800°F)
	YXG-28	300°C (800°F)
	YXG-30	300°C (800°F)
Shape	Block or Rectangular or Cuboid, but Disc, Ring, Cylinder, Arc and Irregular shape are also available
Coating	Ni, Ni-Cu-Ni, Electroless Nickel, Zinc, Colored Zinc, Epoxy, Passivation, Phosphated, Everlube, Au, Ag, Sn etc.
Magnetized direction	Thickness Magnetized, but Axially, Diametrical, Multipoles and Radial magnetization are also available, Customized magnetization is welcome.
Certificate	ISO/TS 16949, ISO9001, ISO14001, RoHS, REACH

Advantages of Samarium Cobalt Magnets

01/

High magnetic energy product: Samarium cobalt magnets possess a high magnetic energy product (BHmax), which means they can generate strong magnetic fields.

02/

Temperature performance: These magnets have an exceptionally low temperature coefficient and can operate at temperatures up to 350℃ without losing their magnetic properties.

03/

Chemical and thermal stability: They exhibit excellent stability in harsh environments, including high corrosion and oxidation resistance, often eliminating the need for protective surface coatings.

04/

Durability: Their ability to withstand extreme temperatures and environmental conditions makes them ideal for military and aerospace applications where reliability is necessary.

Application of Samarium Cobalt Magnets

Motors and Generators

Samarium cobalt magnets are widely used in the production of motors and generators due to their high energy density and high temperature stability.

Sensors

Samarium cobalt magnets are also used in a variety of sensor applications, such as position sensors, speed sensors, and pressure sensors.

Medical Equipment

Samarium cobalt magnets are used in a variety of medical equipment applications, such as magnetic resonance imaging (MRI) machines, and in the production of permanent magnets for use in medical devices.

Aerospace and Defense

Used in missile guidance systems, radar equipment, and military sensors due to their high-temperature stability and resistance to demagnetization.

Automotive Industry

Applied in hybrid and electric vehicle components, ignition systems, and speed sensors for enhanced efficiency.

Typical Magnetic and Physical Properties of Samarium Cobalt

Samarium Cobalt Material	Density		Max. Energy Product BH (max)	Typical Residual Induction Br (max)	Coercive Force Hc (min)	Intrinsic Coercive Force (Hci)	Maximum Operating Temperature		Curie Temperature
	Lbs/in3	G/cm3	MGO	Gauss	Oersteds	Oersteds	F°	C°	F°	C°
SmCo 18	0.296	8.2	16 - 18	8700	≥8100	≥16000	482	250	1382	750
SmCo 20	0.296	8.2	19 - 21	9200	≥8500	≥16000	482	250	1382	750
SmCo 22	0.299	8.3	20 - 22	9500	≥8900	≥16000	482	250	1382	750
SmCo 24	0.304	8.4	22 - 24	9900	≥9100	≥18000	662	350	1508	820
SmCo 26	0.304	8.4	24 - 26	10400	≥9400	≥18000	662	350	1508	820
SmCo 28	0.303	8.4	26 - 28	10700	≥9500	≥18000	662	350	1508	820
SmCo 30	0.303	8.4	28 - 30	11000	≥9900	≥18000	662	350	1508	820

Samarium Cobalt Magnets Manufacturing Process

Bonded Samarium Cobalt Magnets

Step 1: First of all, the raw materials needed to produce samarium cobalt magnets are heated and melted in an induction furnace filled with argon to form alloy materials.
Step 2: After that, the liquid alloy is poured into a mold and cooled with water to form ingots. Once the ingots are cooled, they are broken down, ground, and milled into fine particles.
Step 3: As an alternative to sintering, the alloy powder is mixed with a binding chemical like an epoxy resin, die pressed, and heated in the presence of an externally applied magnetic field to orientate the particles.
Step 4: The last step is to coat the magnet if a coating is needed, and then magnetize it using an externally applied magnetic field.

Sintered Samarium Cobalt Magnets

The first two steps of manufacturing sintered samarium cobalt magnets are the same as the first two steps in manufacturing the bonded ones. The process differs in step three, where we will pick up here:
Step 3: In addition to using bonding chemicals to bond the alloy particles, the powder can also be pressed into a die and sintered at a temperature of up to 1250°C to fuse the powder into a solid. The sintered material is then given a solution treatment at a similar temperature, then tempered between 700°C and 900°C, and then cooled under an externally applied magnetic field.
Step 4: The final step in creating sintered samarium cobalt magnets is machining and grinding. Different from the bonded ones, they require a certain level of grinding and finishing and must be done with the water-cooled diamond-coated grinding machine because this material is very hard, brittle and the dust generated is extremely flammable. The formed magnet is then coated and magnetized.

Custom Step By Step

Custom Requirements
Start by provide your requirements for custom samarium cobalt magnets product. This can include information on the magnet’s size, shape, strength, coating, and any other special features that the customer may need.

Design the Magnet
Based on the your requirements, design the magnet using specialized software such as SolidWorks or AutoCAD. This will allow our to create a 3D model of the magnet, which can be used to verify that it meets the your requirements.

Select the Materials
Choose the appropriate samarium cobalt magnets materials for the specific application of the custom magnet, as well as any other materials needed for the manufacturing process, such as adhesives or coatings.

Fabricate the Magnet
Using the design and material selections as a guide, begin fabricating the magnet. This may involve cutting and shaping the samarium cobalt magnets material, applying coatings, and any other necessary steps to create the final product.

Package and Deliver the Magnet
Once the samarium cobalt magnets has been tested and approved, package it carefully to ensure that it is protected during shipping. We are sure to include any necessary documentation, such as specifications or instructions for use, with the magnet.

Shipping and Delivery

Packing	Standard sea or air packing, such as carton, wooden box, pallet etc.
Lead time	7 days for samples, 15-20 days for mass production.
Transportation	All shipping methods are available: courier (TNT, DHL, FedEx, UPS), air or sea. Shipper or freight forwarder can be appointed by either purchaser or TC.

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Certificate

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FAQ

Q: Do samarium cobalt magnets rust?

A: Samarium cobalt magnets have a strong resistance to corrosion and oxidation resistance, usually do not need to be coated and can be widely used in high temperature and poor working conditions.

Q: How strong are samarium cobalt magnets?

A: Samarium cobalt (SmCo) magnets are known for their high magnetic strength and resistance to demagnetization, especially at high temperatures, making them suitable for applications where temperature stability and magnetic reliability are crucial.

Q: What is the difference between SmCo and NdFeB magnets?

A: The basic differences between SmCo and NdFeB magnets are in their performance. SmCo magnets operate better at higher temperatures, up to 350°C, and in more corrosive environments. In contrast, NdFeB magnets have a much stronger magnetic field, with the highest BHmax of 35-52 MGOe.

Q: Are neodymium magnets better than samarium cobalt magnets?

A: SmCo magnets operate better than NdFeB magnets at higher temperatures and in more corrosive environments than Neodymium magnets. Neodymium magnets have a much stronger magnetic field –with the highest BH Max of any permanent magnet available today –and they are cheaper than SmCo.

Q: Are samarium cobalt magnets brittle?

A: Cracks are acceptable as long as they do not extend across more than 50% of the pole surface. Magnetizing and Handling - samarium cobalt magnets are very brittle and very strong magnetically. Therefore, it is crucial to handle these magnets with extreme care to avoid personal injury and damage to the magnets.

We're well-known as one of the leading samarium cobalt magnets manufacturers and suppliers in China. If you're going to buy high quality samarium cobalt magnets with competitive price, welcome to get more information from our factory. Also, customized service is available.

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