Buy neodymium ring magnets from HQ Magnet – One of the earliest neodymium magnets manufacturer in China since 1994. We supply custom magnets in many shapes, sizes, and grades of neodymium magnets and assemblies. We are happy to provide our best price for you. Please note that the product show above is one of our made products for our customer, all of our products are made according customer’s requirements, unlike orders for stock magnets, custom magnet orders require a minimum purchase amount (according the specific requirements), and take about 3-4 weeks to fulfill.
| Material | Sintered Neodymium-Iron-Boron (NdFeB) |
|---|---|
| Grade | |
| Shape | |
| Dimensions | Dia87 x dia63 x 8mm (Outer Diameter x Inner Diameter x Thickness) |
| Coating | |
| Magnetization | |
| Tolerance | +/- 0.05 mm |
| Density | 7.40 ~ 7.70 g/cm3 |
| Weight | 169.45 g |
| Operating Temperature | |
| Remanence (Br) | >13.3 kGs, 1.33 T |
| Coercivity (HcB) | >971 kA/m, >12.2 kOe |
| Intrinsic Coercivity (HcJ) | >1114 kA/m, >14 kOe |
| Maximum Energy (BHmax) | 342 ~ 366 kJ/m3, 43 ~ 46 MGOe |
| Vickness Hardness | 500 ~ 700 HV |
| Compressive Strength | 1000 ~ 1100 MPa |
| Tensile Strength | 80 ~ 90 MPa |
| Bending Strength | 150 ~ 400 MPa |
| Thermal Conductivity | 8 ~ 10 W/(m·K) |
| Young's Modulus | 150 ~ 200 Gpa |
| Electrical Resistivity C∥ | 1.4 ~ 1.6 μΩ·m |
| Electrical Resistivity C⊥ | 1.2 ~ 1.4 μΩ·m |
| Thermal Expansion C∥ | 4 ~ 9 x 10^-6/K |
| Thermal Expansion C⊥ | -2 ~ 10 x 10^-6/K |
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