Smco magnets have very high magnetic properties and temperature properties. Their Curie temperature can be as high as 710 to 880°C.Maximum working temperature can be 250ro 350°C. So this kind of magnets have the best magnetic stability. They are very good magnetic material for motors and other application with very strict working environment requirement.
| Physical Properties of SmCo Magnet |
| | S22 S24 S26 S28 S30 | S22H S24H S26H S28H | S26SH S28SH | S17 S19 |
| Curie Temp.Tc. | °C | 800-850 | 800-850 | 800-850 | 700-750 |
| Operating Temp. | °C | 250 | 350 | 350 | 250 |
| Density | g/cm3 | 8.3-8.5 | 8.3-8.5 | 8.3-8.5 | 8.1-8.3 |
| Temp.Coefficient(0-100iC)a Br | %/°C(//) | -0.02 | -0.02 | -0.01 | -0.04 |
| %/°C(I) | -0.03 | -0.03 | -0.01 | -0.05 |
| Recoil Permeabilityμrec | | 1.0-1.05 | 1.01-1.05 | 1.01-1.05 | 1.01-1.05 |
| Vickers hardness | Hv | 550-600 | 550-600 | 550-600 | 500-550 |
| Yong's modulus | kN/mm2 | 150 | 150 | 150 | 110 |
| Spec.Electr.resistance | Ωmm2/m | 0.75-0.85 | 0.75-0.85 | 0.75-0.85 | 0.5-0.6 |
| Grade | Remanence | Normal coercivity | Intrinsic coercivity | Max.energy product | Maximum operating | Density |
| (Br) | (bHc) | (Hc) | (BH)max | temperature°C | g/cm3 |
| S17(1:5) | 8.2kGs | 7.5.0Koe | 15.0Koe | 16-18MGoe | 250 | 0.2 |
| (Sm.Pr)Co |
| S19(1:5) | 8.5kGs | 7.8.0Koe | 15.0Koe | 18-20MGoe | 250 | 0.2 |
| (Sm.Pr)Co |
| S22(2:17) | 9.0kGs | 8.0Koe | 15.0Koe | 20-22MGoe | 250 | 0.2 |
| Sm(Co,Cu,Fe,Zr) |
| S22H(2:17) | 9.0kGs | 8.0Koe | 18.0Koe | 20-22MGoe | 250 | 0.2 |
| Sm(Co,Cu,Fe,Zr) |
| S24(2:17) | 9.5kGs | 8.5Koe | 15.0Koe | 22-24MGoe | 300 | 0.3 |
| Sm(Co,Cu,Fe,Zr) |
| S24H(2:17) | 9.5kGs | 8.5Koe | 18.0Koe | 22-24MGoe | 350 | 0.3 |
| Sm(Co,Cu,Fe,Zr) |
| S26(2:17) | 10.0kGs | 9.0Koe | 15.0Koe | 24-26MGoe | 300 | 0.3 |
| Sm(Co,Cu,Fe,Zr) |
| S26H(2:17) | 10.0kGs | 9.0Koe | 18.0Koe | 24-26MGoe | 350 | 0.3 |
| Sm(Co,Cu,Fe,Zr) |
| S26SH(2:17) | 10.0kGs | 9.0Koe | 20.0Koe | 24-26MGoe | 350 | 0.3 |
| Sm(Co,Cu,Fe,Zr) |
| S28(2:17) | 10.5kGs | 9.5Koe | 15.0Koe | 26-28MGoe | 300 | 0.3 |
| Sm(Co,Cu,Fe,Zr) |
| S28H(2:17) | 10.5kGs | 9.5Koe | 18.0Koe | 26-28MGoe | 350 | 0.3 |
| Sm(Co,Cu,Fe,Zr) |
| S28SH(2:17) | 10.5kGs | 9.5Koe | 20.Koe | 26-28MGoe | 350 | 0.3 |
| Sm(Co,Cu,Fe,Zr) |
| S30(2:17) | 10.8kGs | 10.0Koe | 15.0Koe | 28-30MGoe | 300 | 0.3 |
| Sm(Co,Cu,Fe,Zr) |
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