Special Shape Samarium Cobalt Magnets YX-20 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
SmCo Magnets are second generation of rare earth magnets, specified into SmCo5 and Sm2Co17 . It is made of samarium, cobalt and other rare earth metal, processed through smashing, pressing and sintering. It has high energy product and extremely low temperature coefficient. Due to strong magnetic property and excellent temperature performance, its working temperature can reach 250-300°C. When working in temperature over 180°C, its energy product, temperature stability chemical stability all surpass that of neodymium magnet material. Arched Shape Rare Earth High Standard SmCo Magnet
Comparing with neodymium magnets, samarium cobalt magnets are far more appropriated to work in high temperature. Therefore, it is great for manufacturing permanent magnet motor with high performance and products used very complicated working environments. In addition, it has very strong resistance to rust, so commonly, it does not need electroplating. Customized Sintered SmCo Super Strong Magnets
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
Price of samarium cobalt material is higher than other material, because samarium, the main component of the material has low reserve on the earth. Arched Arciform Sintered SmCo Rare Earth Permanent Magnet
Composition:Samarium Cobalt Smco Magnet Sm2Co17,SmCo5
Due to its higher magnetic properties(higher Br,higher Hcj and higher (BH)max,lower temperature coefficient,higher working temperature(250-350°C) and excellent corrosion resistance,SmCo magnet is widely used in electron beam devices,high performance motors,sensors ,Generators motor,Wind power,Wind power and magnetic assemblies.It can not be replaced by other permanent magnets. Custom Shape Sintered SmCo Magnet, Customized Mini Magnetic Structural Component SmCo Magnets
Specific requirements :
1. The properties of the grade is maintain strictly.
2. Hk/Hcj should be not less 0,55.
3. Couple magnetized 50%N(S) and 50%S(N).
4. The poles must be marked.
5. The magnetic pole N marked with blue paint.
6. The magnetic pole S marked with red paint. Note: poles must be magnetic, not geographical.
7. The thickness of the magnet will be monitored 4,35 – 4,50 mm.
8. Induction on a convex surface “B out” should be more 170 mT (163 mT old value).
9. Induction on the concave surface “B int” should be more 60 mT.
10. Variation in the magnetic flux for whole order must not exceed 15% or that is the same max(F)/min(F) ≤1,15.
11. The fall of the magnetic flux F2 at + 20 gr. C, after heating to + 200 gr. C during one hour, is not more than 3% or that is the same F2/F1≥0.97.Small Customized Samarium Cobalt 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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