Linear Actuators & Satellite Systems SmCo Arc Magnet YXG-28H Item No. MPCO-SMOS series
Customzied Specific Requirements
OEM or ODM service: Accept
Dimension: Customized size
Custom Grade: SmCo5, Sm2Co17
Magnetization direction: Thickness, Length, Axially, Diametre, Radially, Multipolar
Surface Treatment: UNCOATED, Silver, Gold, Zinc, Ni-cu-Ni. Epoxy etc.
Tolerance: +/-0.02 – 0.05mm
Application: SmCo rare earth permanent magnets are widely applied in Auto, energy-efficient Motors and Generators, Machinery, Audio/Video and Communication Equipment, Medical Device(MRI), Office Automation, Magnetic Separator, etc.
Samarium Cobalt (SmCo) magnets are made by a sintering process and exist in two forms. The first is Sm1Co5 (SmCo 1:5) and this has a maximum energy product of between 14 and 24 MGOe. The second, and more common, form is Sm2Co17 (SmCo 2:17) and this has a maximum energy product of between 22 and 32 MGOe. The main Sm2Co17 alloy is around 35% Samarium (Sm) and 60% Cobalt (Co) with the balance being from varying amounts of Iron (Fe), Copper (Cu), Hafnium (Hf) and Zirconium (Zr). Praseodymium (Pr) may also be used. Sm1Co5 is made of only Sm and Co and has excellent corrosion resistance. We offer 29 grades of sintered SmCo and 7 main grades of bonded SmCo. SmCo26 (a 2:17 variety) is the most commonly used grade.
RECo CoSm Sintered SmCo Arc Magnet
Applications Of Samarium Cobalt Magnets
Computer disc drives and sensors
Traveling wave tubes
Linear actuators and satellite systems
Motors where temporary stability is vital
Attributes Of Samarium Cobalt Material
High resistance to demagnetization
High energy (magnetic strength is strong for its size)
Good to moderately high temperature stability
Pricing for samarium cobalt is market sensitive
Extremely strong rare earth magnets, Samarium Cobalt magnets (SmCo) are composed of samarium, cobalt and iron. Not sure if samarium cobalt is the best material for your application? Review our permanent magnetic materials comparison for more information.
Manufacturing – In general, the elements are melted together and milled into a powder that is dry-pressed to shape in the presence of a magnetic field. The material is then sintered, aged, ground to dimension, magnetized and tested. They are called “rare earth” magnets because the elements of samarium cobalt are classified as such in the lanthanides section of the Periodic Table of the Elements. Customized Tile Arc Sintered Smco Rare Earth Magnet
Tolerances – For as-pressed material, tolerance on the thickness (direction of magnetization) is +/- .005”. Other dimensions are +/- 2.5% or +/- .010”, whichever is greater. Sm2Co17 Tile Arc Samarium Generator Permanent Magnet
Samarium Cobalt Segment Permanent Magnets for Linear Actuators
According to International Magnetics Association (IMA) standards, visual imperfections such as hair-line cracks, porosity and minor chips are commonly found in sintered metallic magnets. A chipped edge is considered acceptable if no more than 10% of the surface is missing. Cracks are acceptable as long as they do not extend across more than 50% of pole surface. High Working Temperature Sm2Co17 Arc Segment SmCo Magnet YXG-30
Sm2Co17 (2:17 alloy)
Typical Range of Values
Material
Br Hc (Hcb) Hci (Hcj) BHmax
T kG kA/m kOe kA/m kOe kJ/m3 MGOe
SmCo24L 0.95-1.02 9.5-10.2 557-716 7.0-9.0 636-955 8-12 175-191 22-24
SmCo26L 1.02-1.05 10.2-10.5 557-748 7.0-9.4 636-955 8-12 191-207 24-26
SmCo28L 1.03-1.08 10.3-10.8 557-765 7.0-9.9 636-955 8-12 207-220 26-28
SmCo30L 1.08-1.15 10.8-11.5 557-795 7.0-10.0 636-955 8-12 220-240 28-30
SmCo32L 1.10-1.15 11.0-11.5 557-810 7.0-10.2 636-955 8-12 230-255 29-32
SmCo26M 1.02-1.05 10.2-10.5 716-780 9.0-9.8 955-1273 12-16 191-207 24-26
SmCo28M 1.03-1.08 10.3-10.8 716-796 9.0-10.0 955-1273 12-16 207-220 26-28
SmCo30M 1.08-1.10 10.8-11.0 716-835 9.0-10.5 955-1273 12-16 220-240 28-30
SmCo32M 1.10-1.13 11.0-11.3 716-845 9.0-10.6 955-1273 12-16 230-255 29-32
SmCo22 0.93-0.97 9.3-9.7 676-740 8.5-9.3 >1433 >18 160-183 20-23
SmCo24 0.95-1.02 9.5-10.2 700-750 8.7-9.4 >1433 >18 175-191 22-24
SmCo26 1.02-1.05 10.2-10.5 750-780 9.4-9.8 >1434 >19 191-207 24-26
SmCo28 1.03-1.08 10.3-10.8 756-796 9.5-10.0 >1435 >20 207-220 26-28
SmCo30 1.08-1.10 10.8-11.0 788-835 9.9-10.5 >1436 >21 220-240 28-30
SmCo32 1.10-1.13 11.0-11.3 811 -845 10.2-10.6 >1194 >15 230-255 29-32
SmCo24H 0.95-1.02 9.5-10.2 700-750 8.7-9.4 >1990 >25 175-191 22-24
SmCo26H 1.02-1.05 10.2-10.5 750-780 9.4-9.8 >1990 >25 191-207 24-26
SmCo28H 1.03-1.08 10.3-10.8 756-796 9.5-10.0 >1990 >25 207-220 26-28
SmCo30H 1.08-1.10 10.8-11.0 788-835 9.9-10.5 >1990 >25 220-240 28-30
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 |
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