TECHNOPLAN
TECHNOPLAN Neodymium Magnets
Manufacturer: TECHNOPLAN
Neodymium Magnets
Temperature Characteristics
- Among commercially available magnets, neodymium magnets offer the highest magnetic performance and can generate a powerful magnetic field even in a compact size.
- In addition, they are hard, resist cracking and chipping, and provide excellent mechanical strength.
- They are also less expensive than samarium-cobalt magnets, which belong to the same rare-earth magnet category.
- Furthermore, manufacturers can relatively easily produce shapes tailored to specific applications, making these magnets suitable for small-lot prototypes.
Advantages
- Neodymium magnets tend to rust easily, so manufacturers usually apply nickel plating to their surfaces.
- They also have relatively poor temperature characteristics and are sensitive to heat.
Disadvantages
- Neodymium magnets experience relatively significant thermal demagnetization.
- Standard products generally require an operating temperature below 80°C.
- Types that can operate at temperatures up to 150°C have become increasingly common. However, compared with other magnet types, neodymium magnets still have relatively poor temperature characteristics.
We consider the operating environment and application to help you select the most suitable “magnetization method,” “shape,” and “magnet type.” Please feel free to contact us.
Magnetization Method
※ Special magnetization methods may require an additional magnetizing yoke fee (initial cost).
Shape
About SI and CGS Units
“SI” refers to the International System of Units (Système International d’Unités). This system internationally standardized the many different units that had previously caused confusion.
Today, SI serves as a common worldwide and rational system of measurement. However, the traditional CGS system also remains widely used. Therefore, both unit systems continue to appear in practical applications.
- Dimensional tolerances depend on the dimensions and shape, but they are generally approximately ±0.1 to ±0.2. Higher accuracy is also available, so please specify your requirements when necessary.
- We also welcome orders for special or custom-made products. Please feel free to contact us regarding small-lot production.
※ Please contact us for current stock availability.
※ We also stock many products other than the standard specifications.
※ Depending on the dimensions, some products may require a longer lead time.
Characteristic Values
| Type | Unit | Residual Flux Density [Br] | Coercive Force [Bhc] | Coercive Force [Ihc] | Maximum Energy Product [BH] | Curie Point [TC] |
|---|---|---|---|---|---|---|
| Isotropic Ferrite | CGS | 2.05–2.35 kG | 1.8–2.2 kOe | 3.0–3.5 kOe | 0.8–1.3 MGOe | 450° |
| SI | 205–235 mT | 143.3–175.1 kA/m | 238.7–278.5 kA/m | 7.3–10.5 kJ/m³ | ||
| Anisotropic Ferrite | CGS | 3.8–4.1 kG | 3.0–3.4 kOe | 3.05–3.55 kOe | 3.6–4.0 MGOe | 450° |
| SI | 380–410 mT | 238.7–270.6 kA/m | 242.7–282.5 kA/m | 28.7–31.9 kJ/m³ | ||
| Neodymium | CGS | 12.3–12.8 kG | 10.5–12.5 kOe | >11 kOe | 35–39 MGOe | 300° |
| SI | 1,230–1,280 mT | 836–995 kA/m | >875 kA/m | 279–310 kJ/m³ | ||
| Samarium Cobalt | CGS | 8.8–10.8 kG | 6.0–8.0 kOe | 7.0–11.0 kOe | 22.0–26.0 MGOe | 750° |
| SI | 880–1,060 mT | 477–637 kA/m | 557–875 kA/m | 175–207 kJ/m³ | ||
| Alnico | CGS | 12.5–13.0 kG | 0.60–0.66 kOe | 0 kOe | 4.8–5.5 MGOe | 860° |
| SI | 1,250–1,300 mT | 47.7–52.5 kA/m | 0 kA/m | 38.2–43.8 kJ/m³ |
※ The values shown in the table are average values only and are not guaranteed.
※ If you have any questions, please contact us for more information!
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