Supply Russia Customer Samarium Cobalt Magnets 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
Material: Sintered SmCo
Grade: SmCo26,SmCo28, SmCo30, SmCo32
Dimensions: Per Drawing
Tolerance: +/-0.13
Coating: N/M
Magnetized direction.
Applications of Samarium Cobalt Magnets
Computer disc drives
Sensors
Traveling wave tubes
Linear actuators
Satellite systems
Motors where temporary stability is vita
Servo-Motors
Transducers
Watch
Positional detector
Generators
Super Strong High Grade SmCo Permanent Magnets
Attributes of Samarium Cobalt Material
High resistance to demagnetization
High energy (magnetic strength is strong for its size)
Good temperature stability
Expensive material (cobalt is market price sensitive)
Excellent corrosion resistance
1. Description of SmCo magnets:
As part of the rare earth group of permanent magnets, samarium cobalt(SmCo) magnets have very high magnetic properties and temperature properties. Their Curie temperature can be as high as 710 to 880℃, maximum working temperature can be 250 to 350℃, so this kind of magnets have the best magnetic stability. They include rare earth Sm1Co5 and Sm2Co17 and are referred to as 1:5 and 2:17 materials. There’re three different manufacturing processes: sintered SmCo magnet, bonded SmCo magnet, and injection molding SmCo magnet.
2. Characteristics:
* SmCo permanent magnet has high magnetic energy product and high coercive force. Its properties are better than Alnico, ferrite permanent magnet. Its max. energy product is up to 239kJ/m3(30MGOe), which is three times of that of Alnico8 permanent magnet, eight times of that of ferrite permanent magnet (Y40). So the permanent magnetic component made from SmCo material is small, light and stable in property. ISO9001 Certificated Customized U Shape SmCo Permanent Magnet
* The curie temp. of the SmCo permanent magnet is high and its temp. Coefficient is low. So it is suitable for use at 300℃, or even higher temp.
* SmCo need not to be coated because it is difficult to be eroded and oxidized. The main ingredient of SmCo permanent magnet is metal cobalt, cost of SmCo material is the most expensive of magnet material, so SmCo is recommended only when its performance is a high temperature environment is a concern. Custom Design Sintered SmCo Magnets for Transducers
3. Magnet shape:
SmCo permanent magnet can be made in many kinds of shapes like ring, disc, cylinder, arc, block, stick, cuboid, cube, bar, countersunk, segment, trapezoid and other abnormal shape according to customers’ requirement, customized shapes are available.
4. Application:
It is widely applied to electro acoustic& telecommunication apparatus, electric motors, measure meters, peg-top, electronic watch, microwave apparatus, magnetic mechanism, sensor and other static or dynamic magnetic routes.
OEM or ODM Special Design Customer SmCo Magnets
| Property | Neodymium | Sm-Co |
|---|---|---|
| Remanence (T) | 1–1.5 | 0.8–1.16 |
| Coercivity (MA/m) | 0.875–2.79 | 0.493–2.79 |
| Relative permeability | 1.05 | 1.05–1.1 |
| Temperature coefficient of remanence (%/K) | –0.09..–0.12 | −0.03..–0.05 |
| Temperature coefficient of coercivity (%/K) | −0.40..–0.65 | −0.15..–0.30 |
| Curie temperature (°C) | 310–370 | 700–850 |
| Density (g/cm3) | 7.3–7.7 | 8.2–8.5 |
| CTE, magnetizing direction (1/K) | (3–4)×10−6 | (5–9)×10−6 |
| CTE, normal to magnetizing direction (1/K) | (1–3)×10−6 | (10–13)×10−6 |
| Flexural strength (N/mm2) | 200–400 | 150–180 |
| Compressive strength (N/mm2) | 1000–1100 | 800–1000 |
| Tensile strength (N/mm2) | 80–90 | 35–40 |
| Vickers hardness (HV) | 500–650 | 400–650 |
| Electrical resistivity (Ω·cm) | (110–170)×10−6 | (50–90)×10−6 |
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