Neodymium Disc Magnet 5 x 3 mm N48
A neodymium magnet (NdFeB) is small but very strong. It is made from a special alloy and magnetised in a strong magnetic field during manufacture. It is noticeably stronger than conventional ferrite magnets and generally has a protective coating because the material is prone to corrosion. N48 indicates the magnetic grade; a higher number generally means a stronger magnet, with grades commonly ranging from N35 to N52.
The Ø5 × 3 mm size is suitable for DIY projects, small holders, catches and temporary attachments to steel. The actual hold depends on the contact surface and the thickness of the metal. Holding force is greater on thick steel than on thin sheet metal.
Warning: not suitable for children. Strong magnets can snap together suddenly, causing pinching injuries, and may break. Bring them together and separate them carefully. Keep them away from bank cards, sensitive electronics and medical devices.
Neodymium Disc Magnet 5 x 3 mm N48
| Shape | Disc |
| Dimensions | 5 x 3 mm |
| Diameter | 5 mm |
| Thickness | 3 mm |
| Material | NdFeB |
| Magnetic Grade | N48 |
| Coating | Nickel (Ni-Cu-Ni) |
| Dimensional Tolerance | ±0,1 mm |
| Approximate Weight | 0,45 g |
| Holding Force | 0,7 kg (7,3 N) |
| Maximum Operating Temperature | 80 °C |
| Magnetisation Direction | Axial |
| Remanence Br | 1,38 - 1,42 T |
| Coercivity bHc | ≥ 836 kA/m |
| Intrinsic Coercivity iHc | ≥ 955 kA/m |
| Maximum Energy Product BHmax | 366 - 390 kJ/m³ |
