⚙️ Technical Product Information
✅ Product Name: N35 Neodymium Magnet – Rectangular Type
✅ Dimensions: 20 mm (Width) × 20 mm (Length) × 10 mm (Thickness)
✅ Shape: Rectangular
✅ Material: NdFeB (Neodymium – Iron – Boron)
✅ Grade: N35
✅ Coating: Nickel (Ni–Cu–Ni) Triple Layer Protection
✅ Magnetic Pole Orientation: Surface to Surface
✅ Magnetic Flux Density (Br): 4,000 – 5,000 Gauss (4 – 5 kGs)
✅ Coercive Force (HcB): ≥ 10.8 kOe
✅ Maximum Energy Product (BHmax): 35 MGOe
✅ Density: 7.5 g/cm³
✅ Maximum Operating Temperature: 80 °C
✅ Corrosion Resistance: Moderate (Nickel-coated protection)
???? Mechanical Properties
| Property | Value | Description |
|---|---|---|
| Hardness | 600 HV | Brittle structure – low impact resistance |
| Compressive Strength | 1000 MPa | High-density structure |
| Tensile Strength | 75 MPa | Measured along the magnetic surface direction |
| Thermal Expansion Coefficient | 6.5 × 10⁻⁶ / °C | Limited thermal stability |
???? Magnetic Properties
Magnetization direction: Magnetized through the thickness (10 mm).
Poles: Located on the front and back rectangular surfaces.
Magnetic field lines: Concentrated at the center of the surface.
The 20 × 20 mm surface area, combined with the thicker body, provides deeper and stronger magnetic flux density.
Approximate pull force: 1,000 – 1,400 grf (tested on a steel surface; significantly stronger than a 2 mm thick magnet due to increased thickness).
⚙️ Applications
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Electronic circuit and sensor applications
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Mechanical prototyping and R&D projects
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Modeling and hobby projects
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Medical and optical device components
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Magnetic holding or alignment systems
⚠️ Warnings and Usage Notes
⚠️ Neodymium magnets are very brittle; they can crack or chip under impact, shock, or compression.
⚠️ Magnetic performance may decrease above 80 °C.
⚠️ Magnets can snap together or strike metal surfaces quickly — it is recommended to handle them with protective gloves.
