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Xiamen Everbeen Magnet Electron Co., Ltd.
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Home > Products > Samarium Cobalt Magnets

Samarium Cobalt Magnets

Samarium Cobalt Magnets

Disk smco magnets

Samarium cobalt magnets (SmCo) are composed of samarium, cobalt and iron. These rare earth magnets are extremely strong for their small size, metallic in appearance and found in simple shapes such a...

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Ring SmCo magnets

Samarium cobalt magnets (SmCo) are composed of samarium, cobalt and iron. These rare earth magnets are extremely strong for their small size, metallic in appearance and found in simple shapes such a...

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SAMARIUM COBALT MAGNETS
Samarium cobalt magnets (SmCo) are composed of samarium, cobalt and iron. These rare earth magnets are extremely strong for their small size, metallic in appearance and found in simple shapes such as rings, blocks and discs.

Applications of Samarium Cobalt Magnets
• Computer disc drives
• Sensors
• Radar
• Traveling wave tubes
• Satellite systems
• Motors where temporary stability is vital
Attributes of Samarium Cobalt Material
• High resistance to demagnetization
• High Energy Product
• Good temperature stability
• High resistance of corrosion and oxidation
• Expensive material (cobalt is market price sensitive)
 
Magnetic Characteristic of SmCo Magnet
Material Grades Remanence Coercive Force Intrinsic Coercivity Maximum Energy product Curie Temp Working Temp  Temp Coefficient Of Br Temp Coefficent Of Hcj
Br Hcb Hcj (BH)max TC TW
SmCo   1:5   T Gs Koe KA/m Koe KJ/m Mgoe  ℃  ℃ %℃  %℃
YX-16 0.81-0.85 8.1-8.5 7.8-8.3 1194-1830 15-23 110-127 14-16 750 250 -0.05 -0.3
YX-18 0.85-0.9 8.5-9.0 8.3-8.8 1194-1830 15-23 127-143 16-18 750 250 -0.05 -0.3
YX-20 0.9-0.094 9.0-9.4 8.5-9.1 1194-1830 15-23 150-167 19-21 750 250 -0.05 -0.3
YX-22 0.92-0.96 9.2-9.6 8.9-9.4 1194-1830 15-23 160-175 20-22 750 250 -0.05 -0.3
YX-24 0.96-1.0 9.6-10.0 9.2-9.7 1194-1830 15-23 175-190 22-24 750 250 -0.05 -0.3
SmCo 2:17 YXG-24H 0.95-1.02 9.5-10.2 8.7-9.4 1990 25 175-191 22-24 800 350 -0.03 -0.2
YXG-26H 1.02-1.05 10.2-10.5 9.4-9.8 1990 25 191-207 24-26 800 350 -0.03 -0.2
YXG-28H 1.03-1.08 10.3-10.8 9.5-10 1990 25 207-220 26-28 800 350 -0.03 -0.2
YXG-30H 1.08-1.10 10.8-11.0 9.9-10.5 1990 25 220-240 28-30 800 350 -0.03 -0.2
YXG-24H 0.95-1.02 9.5-10.2 8.7-9.4 1433 18 175-191 22-24 800 300 -0.03 -0.2
YXG-26H 1.02-1.05 10.2-10.5 9.4-9.8 1433 18 191-207 24-26 800 300 -0.03 -0.2
YXG-28H 1.03-1.08 10.3-10.8 9.5-10 1433 18 207-220 26-28 800 300 -0.03 -0.2
YXG-30H 1.08-1.10 10.8-11.0 9.9-10.5 1433 18 220-240 28-30 800 300 -0.03 -0.2
YXG-26M 1.02-1.05 10.2-10.5 9.4-9.8 955-1273 12-16 191-207 24-26 800 300 -0.03 -0.2
YXG-28M 1.03-1.08 10.3-10.8 9.5-10 955-1274 12-16 207-220 26-28 800 300 -0.03 -0.2
YXG-30M 1.08-1.10 10.8-11.0 9.9-10.5 955-1275 12-16 220-240 28-30 800 300 -0.03 -0.2
YXG-28L 1.02-1.08 10.2-10.8 5.2-9.0 438-796 5.5-10 207-220 26-28 800 250 -0.03 -0.2
YXG-30L 1.08-1.15 10.8-11.5 5.2-9.0 438-796 5.5-10 220-240 28-30 800 250 -0.03 -0.2
Physical Property of SmCo Magnet
Parameters        Unit SmCo5 Sm2Co17
Density g/cm3 8.3 8.4
Curie Temperature K 1000 1100
Vick Hardness Mpa 450-500 550-600
Compressive Strength Mpa 1000 800
Electrical Resistivity Ω.cm 5~6*10-6 8~9*10-5
Bending Strength Mpa 150-180 130-150
Tensile Strength Mpa 400 350
Coefficient of Thermal Expansion (10-6/℃) ∥6             ⊥12 ∥8             ⊥11


Beneficial Suggests:
Sintered SmCo permanent magnetic materials have the character of great brittleness and lacking of the ductibility, therefore, it isn’t suitable for the material to be applied as structural parts when designed. The physical characteristics of SmCo5 is better than Sm2Co17’s. Because SmCo5 is slightly easier to be machined while Sm2Co17 is more brittle. Magnetized SmCo products must be picked up carefully and gently during assemble process and kept away from ironware to avoid mutually attracting, causing chips and cracks or other damage to magnets’ appearance, or it’ll even hurt operators in case that two strongly magnetized slices firmly attract unexpectedly.

⑵ There may be some appearance defects such as slight nicks existing as it may bring some slight collision during the process of production, packing and delivering of sintered SmCo permanent magnetic materials. However, it wouldn’t changes its property, stability as well as antidemagnetization ability of materials as long as its flow doesn’t affect normal assembling or functions.

⑶ Clients who request SmCo products non-magnetized must be familiar with magnetization energy of their own magnetization equipments, to the effect that appropriate grade would be chose and products of our company can be fully saturated.

⑷ If the designed products are to be applied under sour alkali or worse conditions, our company may provide SmCo permanent magnetic products plated with Zinc, Nickel, gold or epoxy resion.