20x15x4 mm N35 Neodyum Magnet (Width 20 mm x Length 15 mm x Thickness 4 mm)

⚙️ Technical Product Information

✅ Product Name: N35 Neodymium Magnet – Rectangular Type
✅ Dimensions: 20 mm (Width) × 15 mm (Length) × 4 mm (Thickness)
✅ Shape: Rectangle
✅ 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: Medium (Nickel-coated protection)

???? Mechanical Properties

???? Magnetic Properties

Magnetization direction: Magnetized through the thickness (4 mm).

Poles: Located on the front and rear rectangular surfaces.

Magnetic field lines: Concentrated at the center of the surface.

The 20 × 15 mm surface area provides a balanced and strong magnetic flux distribution in a compact size.

Approximate pull force: 800 – 1,000 grf (tested on a steel surface; stronger than the 3 mm version as the magnet is thicker and has a larger surface area).

⚙️ Applications

• Electronic circuit and sensor applications

• Mechanical prototyping and R&D studies

• Model making and hobby projects

• Medical and optical device components

• 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 decreases above 80 °C.
⚠️ Magnets can snap together or strike metal surfaces quickly — it is recommended to wear protective gloves during handling.