Sintered SmCo magnet

Samarium Cobalt holds its standard property in higher maximum temperatures than neodymium, although its maximum strengh is less. The cost of SmCo material is the most expensive, so SmCo magnet is recommended only when its performance is a high temperature environment is a concern.

The characteristics of Samarium Cobalt Magnet

  1. Very high magnetic properties with good stability
  2. Superior resistance to high temperature, Curie temperature of majority is over 800°C
  3. Excellent corrosion resistance capability, no coating is needed for surface protection

Typical Magnetic Porperties of Samarium Cobalt Materials

sintered smco magnets

Properties of SmCo Permanent Magnet

SmCo Magnet Physical Properties
Grade Residual Flux Density Br Coercive Force Hcb Intrinsic Coercive force Hcj Max. energy product (BH)max
mT kGs kA/m koe kA/m koe kJ/m3 MGOe
SmCo-YX6 500~600 5.0~6.0 ≥358 4.5~5.5 ≥960 ≥12.0 47~72 6~9
SmCo-YX10 600~700 6.0~7.0 ≥438 5.5~6.5 ≥1200 ≥15.0 64~88 8~11
SmCo-YX12 700~750 7.0~7.5 ≥520 6.5~7.3 ≥1591 ≥20.0 96~120 12~15
SmCo5-YX16 750~880 7.5~8.8 597±40 7.5±0.5 ≥1591 ≥20.0 127±16 16±2
SmCo-YX16A 750~880 7.5~8.8 597±40 7.5±0.5 ≥1989 ≥25.0 127±16 16±2
SmCo-YX16B 750~880 7.5~8.8 597±40 7.5±0.5 ≥2386 ≥30.0 127±16 16±2
Sm2Co17-YX18 800~930 8.0~9.3 637±40 8.0±0.5 ≥1194 ≥15.0 143±16 18±2
SmCo-YX18A 800~930 8.0~9.3 637±40 8.0±0.5 ≥1591 ≥20.0 143±16 18±2
SmCo-YX18T 800~930 8.0~9.3 637±40 8.0±0.5 ≥1591 ≥20.0 143±16 18±2
SmCo-YX18B 800~930 8.0~9.3 637±40 8.0±0.5 ≥1989 ≥25.0 143±16 18±2
Sm2Co17-YX20 900~980 9.0~9.8 637±40 8.0±0.5 ≥1432 ≥18.0 159±16 20±2
SmCo-YX20 900~950 9.0~9.5 ≥670 8.5~9.2 ≥1591 ≥20.0 159±16 20±2
SmCo-YX20A 900~980 9.0~9.8 637±40 8.0±0.5 ≥1989 ≥25.0 159±16 20±2
SmCo-YX22 900~1030 9.0~10.3 653±40 8.2±0.5 ≥1432 ≥18.0 175±16 22±2
SmCo-YX22A 900~1030 9.0~10.3 653±40 8.2±0.5 ≥1989 ≥25.0 175±16 22±2
SmCo-YX24 950~1080 9.5~10.8 676±40 8.2±0.5 ≥1432 ≥18.0 191±16 24±2
SmCo-YX24A 1000~1100 10.0~11.0 676±40 8.2±0.5 ≥1989 ≥25.0 191±16 24±2
SmCo-YX26 1000~1130 10.0~11.3 357~516 4.5~6.5 413~556 5.0~7.0 207±16 26±2
YX26A 1000~1130 10.0~11.3 716±40 9.0±0.5 ≥796 ≥10.0 207±16 26±2
YX26B 1000~1130 10.0~11.3 716±40 9.0±0.5 ≥1194 ≥15.0 207±16 26±2
YX26C 1000~1130 10.0~11.3 716±40 9.0±0.5 ≥1591 ≥20.0 207±16 26±2
YX26D 1000~1080 10.0~10.8 ≥732 9.0~10.5 ≥2300 ≥30.0 207±16 26±2
SmCo-YX28 1060~1180 10.6~11.8 357~516 4.5~6.5 413~556 5.0~7.0 223±16 28±2
SmCo-YX28A 1060~1180 10.6~11.8 763±40 9.6±0.5 ≥796 ≥10.0 223±16 28±2
SmCo-YX28B 1050~1150 10.5~11.5 ≥750 9.4~9.8 ≥960 ≥12.0 223±16 28±2
SmCo-YX28C 1060~1180 10.6~11.8 763±40 9.6±0.5 ≥1194 ≥15.0 223±16 28±2
SmCo-YX30 1100~1200 11.0~12.0 438~597 5.5~6.5 454~597 5.7~7.5 238±16 30±2
SmCo-YX30A 1100~1200 11.0~12.0 ≥560 7.0~8.5 ≥716 ≥12.0 238±16 30±2

Characteristics & Application of permanent SmCo magnet
Curie Temp. Tc °C 800~850 Coeff. of thermal expansion C // 1/°C ~8×10-5
Density D g/cm3 8.3~8.5 C⊥ 1/°C ~11×10-5
Recoil Permeability µrec   1.00~1.05 Regidity strength N/m2 ~1.5×108
Max. Working Temp. Tmax °C 350 Compress strength N/m2 ~8×108
Electrical Resistivity   Ω. Cm ~8.6×10-5 Tensile strength N/m2 ~3.5×107
Vickers Hardness Hv   500~600 young's modulus N/m2 ~1.2×1011
Thermal Conduct Rate   W/mK ~12 Magnetization field Ha kA/m ≥1600

Typical Characteristic Curve for Samarium Cobalt permanent magnet

Sintered SmCo magnet, Samarium Cobalt Magnet characteristic curve

more applications of sintered smco magnet

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