High Temperature 350 °C SmCo Rod Magnets Item NO. MPCO-SCC series
Material: Samarium Cobalt
Shape: rod, cylinder, bar
Grade:Smco5,Sm2Co17 etc.
Magnetic properties:Hcj,Hcb,BH,Br,BHmax,working temperature.
Application:widely used in sensor,speakers,reed switches,motor,rotor,wind turbines/generators,AC/DC motors,drive motors,servo motors etc.
Magnetization directions:by Axial or by radial.
SmCo Rod Magnets are a type of magnetic material made from rare earth metal samarium and strategic metal cobalt-main elements, with iron, copper, zirconium and praseodymium, and produced by a serial of process melting, milling, pressing, sintering and aging. It has high magnetic properties (high energy product, high coercivity, high remanence), very low temperature coefficient (-0.030% / °C), high working temperature (Maximum working temperature reaches 350°C), no negative temperature limitation, and excellent corrosion resistance. At working temperature above180°C, its maximum energy product, temperature stability and chemical stability are better than NdFeB material. Therefore, According to the different components of the SmCo5 and Sm2Co17, respectively, they are the first generation and the two generation rare earth permanent magnetic material. Because of its raw materials are scarce, the price is expensive and limit the development. Samarium cobalt (SmCo) as the second generation rare earth permanent magnet, not only has a high magnetic energy product (14-28MGOe) and reliable coercivity, and exhibits excellent temperature characteristics in rare earth permanent magnet series. Compared with the NdFeB, SmCo is more suitable for working in high temperature environment. Sm2Co17 (SmCo permanent magnet) countersunk smco magnets
Physical performance sheet of sintered SmCo
| parameters | SmCo5 | Sm2Co17 |
| αBr (%/ ℃ ) | -0.04 | -0.03 |
| αHcj (%/ ℃ ) | -0.3 | -0.2 |
| Curie teperature(℃) | 700-750 | 800-850 |
| density (g/cm3 ) | 8.2-8.4 | 8.3-8.5 |
| Webster hardness (HV) | 450-500 | 500-600 |
| Working temperature ( ℃ ) | 250 | 350 |
The Magnetic Properties of Sintered SmCo magnets
| acteristics | Residual Flux Br | Coercive Force Hcb | Intrinsic Coercive Force Hcj | Max. Enery Product(BH)max | Curie Temp Tc | Density ρ | Temp.Coefficient △Bd/Bd | Thermal Expansion coefficient | Vickers Hardness | ||
| Material Grade | Tesal (kGs) | KA/m (kOe) | KA/m (kOe) | kJ/m3 (MGOe) | (℃) | g/cm3 | (％/℃) | C⊥ (1℃) | C∥ (1℃) | Hv | |
| 1:5 SmCo5 | SM~18 | 0.80~0.90 (8.0~9.0) | 621~700 (7.8~8.8) | ≥1990 (≥25.0) | 127~159 (16.0~20.0) | 750~800 | 8.2~8.4 | -0.05 | 13×10-6 | 6×10-6 | 450~500 |
| SM~20 | 0.90~0.95 (9.0~9.5) | 676~740 (8.5~9.3) | ≥1432 (≥18.0) | 151~167 (19~21) | 750~800 | 8.2~8.4 | -0.05 | 13×10-6 | 6×10-6 | 450~500 | |
| SM~22 | 0.95~1.00 (9.5~10.0) | 716~756 (9.0~9.5) | ≥1194 (≥15.0) | 167~183 (21~23) | 750~800 | 8.2~8.4 | -0.05 | 13×10-6 | 6×10-6 | 450~500 | |
| 2:17 Sm2 (Co,Cu,Fe,Zr) 17 | SM~18T | 0.85~0.95 (8.5~9.5) | 636~716 (8.0~9.0) | ≥1592 (≥20.0) | 127~159 (16.0~20.0) | 850~900 | 8.3~8.5 | -0.01 | 11×10-6 | 8×10-6 | 500~600 |
| SM~22T | 0.95~1.00 (9.5~10.0) | 676~756 (8.5~9.5) | ≥1592 (≥20.0) | 159~191 (20.0~24.0) | 850~900 | 8.3~8.5 | -0.01 | 11×10-6 | 8×10-6 | 500~600 | |
| SM~22L | 0.95~1.00 (9.5~10.0) | 477~637 (6.0~8.0) | 493~716 (6.2~9.0) | 159~191 (20.0~24.0) | 800~850 | 8.3~8.5 | -0.03 | 11×10-6 | 8×10-6 | 500~600 | |
| SM~22H | 0.95~1.00 (9.5~10.0) | 557~756 (7.0~9.5) | 637~1194 (8.0~15.0) | 159~191 (20.0~24.0) | 800~850 | 8.3~8.5 | -0.03 | 11×10-6 | 8×10-6 | 500~600 | |
| SM~22U | 0.95~1.00 (9.5~10.0) | 716~796 (9.0~10.0) | ≥1990 (≥25.0) | 159~191 (20.0~24.0) | 800~850 | 8.3~8.5 | -0.03 | 11×10-6 | 8×10-6 | 500~600 | |
| SM~26L | 1.00~1.08 (10.0~10.8) | 477~637 (6.0~8.0) | 493~716 (6.2~9.0) | 191~223 (24.0~28.0) | 800~850 | 8.3~8.5 | -0.03 | 11×10-6 | 8×10-6 | 500~600 | |
| SM~26H | 1.00~1.08 (10.0~10.8) | 557~836 (7.0~10.5) | 637~1194 (8.0~15.0) | 191~223 (24.0~28.0) | 800~850 | 8.3~8.5 | -0.03 | 11×10-6 | 8×10-6 | 500~600 | |
| SM~26U | 1.00~1.08 (10.0~10.8) | 756~836 (9.5~10.5) | ≥1990 (≥25.0) | 191~223 (24.0~28.0) | 800~850 | 8.3~8.5 | -0.03 | 11×10-6 | 8×10-6 | 500~600 | |
| SM~28L | 1.04~1.10 (10.4~11.0) | 477~637 (6.0~8.0) | 493~716 (6.2~9.0) | 207~239 (26.0~30.0) | 800~850 | 8.3~8.5 | -0.03 | 11×10-6 | 8×10-6 | 500~600 | |
| SM~28H | 1.04~1.10 (10.4~11.0) | 557~836 (7.0~10.5) | 637~1194 (8.0~15.0) | 207~239 (26.0~30.0) | 800~850 | 8.3~8.5 | -0.03 | 11×10-6 | 8×10-6 | 500~600 | |
| SM~28U | 1.04~1.10 (10.4~11.0) | 756~836 (9.5~10.5) | ≥1990 (≥25.0) | 207~239 (26.0~30.0) | 800~850 | 8.3~8.5 | -0.03 | 11×10-6 | 8×10-6 | 500~600 | |
| SM~30L | 1.08~1.12 (10.8~11.2) | 477~637 (6.0~8.0) | 493~716 (6.2~9.0) | 223~247 (28.0~31.0) | 800~850 | 8.3~8.5 | -0.03 | 11×10-6 | 8×10-6 | 500~600 | |
| SM~30H | 1.08~1.12 (10.8~11.2) | 557~836 (7.0~10.5) ~10.2).0~10.5) | 637~1194 (8.0~15.0) | 223~247 (28.0~31.0) | 800~850 | 8.3~8.5 | -0.03 | 11×10-6 | 8×10-6 | 500~600 | |
| SM~30U | 1.08~1.12 (10.8~11.2) | 796~859 (10.0~10.8) | ≥1990 (≥25.0) | 223~247 (28.0~31.0) | 800~850 | 8.3~8.5 | -0.03 | 11×10-6 | 8×10-6 | 500~600 | |
| SM~32 | 1.10~16 (11.0~11.6) (26.0~30.0) | 557~836 (7.0~10.5) | ≥637 (≥8.0) | ≥239 (≥30.0) | 800~850 | 8.3~8.5 | -0.03 | 11×10-6 | 8×10-6 | 500~600 | |
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