Custom Rare Earth Magnets

Custom NdFeB magnets, custom SmCo magnets, custom rare earth magnets

A variety of custom magnets can be tailored to meet global customers' requirements. When you request for quotation, please provide us a technical drawing with the following specifications as detailed as possible.

  1. Material type (sintered NdFeB magnets, bonded NdFeB magnets or sintered SmCo magnets) and grade/magnetic properties (please take the maximum working temperature Tw into consideration).
  2. Dimensions and tolerances.
  3. Need any coating? If yes, please confirm the coating type.
  4. Magnetization direction and/or number of magnetic poles.
  5. Order quantity.
  6. Other requirements if there are.

Please do not hesitate to call us, email us or leave us a message. We will respond to your inquiry within one business day.

Typical Physical and Chemical Properties of Some Magnetic Materials

   
Performance NameUnitSintered NdFeBBonded NdFeBSintered Sm2Co17Sintered SmCo5Sintered FerriteInjection FerriteAlNiCo
Maximum Energy Product ((BH)max)MGOe28 ~ 522 ~ 1316 ~ 3214 ~ 242 ~ 51 ~ 21 ~ 13
Intrinsic Coercivity (Hcj)kOe11 ~ 356 ~ 148 ~ 3515 ~ 302 ~ 52 ~ 41 ~ 2
Temperature Coefficient of Br (α)%/°C-0.09 ~ -0.12-0.10 ~ -0.12-0.030 ~ -0.045-0.035 ~ -0.050-0.2-0.2-0.02
Temperature Coefficient of Hcj (β)%/°C-0.40 ~ -0.60-0.40 ~ -0.60-0.20 ~ -0.30-0.20 ~ -0.300.30.30.01 ~ 0.03
Curie Temperature (Tc)°C310 ~370300 ~ 350800 ~ 850700 ~ 750450 ~ 480450 ~ 480750 ~ 890
Maximum Working Temperature (Tw)°C230150350250250150500
Recoil Permeability (μrec)-1.051.21.05 ~ 1.101.051.05 ~ 1.201.05 ~ 1.201.70 ~ 4.70
Density (ρ)g/cm37.4 ~ 7.74.5 ~ 6.58.3 ~ 8.58.1 ~ 8.44.8 ~ 5.23.3 ~ 3.96.9 ~ 7.4
Resistivity (ρ)μΩ·m1.4 ~ 1.6-0.8 ~ 0.90.5 ~ 0.6> 1×108> 1×108> 5×103
Thermal Conductivity (λ)W/(m·°C)8 ~ 10-1213---
Vickers Hardness (Hv)MPa500 ~ 600-500 ~ 600400 ~ 500480 ~ 580-520 ~ 630
Rockwell Hardness (HRB)MPa-35 ~ 45-----
Compressive Strenght (σbc)MPa1000 ~ 11002008001000---
Bending Strength (σbb)MPa200 ~ 400-15018030090 ~ 160-
Tensile Strength (σb)MPa80 ~ 90583540< 10045 ~ 110-
Young’s Modulus (E)GPa150 ~ 200-120130---
Thermal Expansivity (α)10-6/°C∥3 ~ 41 ~ 2∥7 ~ 9∥5 ~ 77 ~ 15--
⊥1 ~ 3⊥10 ~ 12⊥11 ~ 13
Corrosion resistance★★☆☆☆★★★☆☆★★★★☆★★★★☆★★★★☆★★★★☆★★★★★
Note:
∗ The above data are only for reference, specific magnets maybe have different values.