Magnet Properties
Neodymium magnets are composed primarily of neodymium (Nd), iron (Fe), and boron (B).
The grade of neodymium you can pick:
- Entry level: N35 – N40
- Demanding: N42 – N48
- Extreme: N50 – N54
Specifications to offer:
- Minimum order quantity: 1 piece
Lead time
- 7 days for regular shapes the fastest shipping
- 20 days for custom designs
2. Dimensional identifications
As a common practice, neodymium magnet manufacturers use 2 parameters to define the sizes of disc neodymium magnets.
They are the diameter and thickness (height), usually with numbers in millimeters.
Suppose you are looking for a disc neodymium magnet with a diameter of 9 mm and a height of 3 mm, you can specify it this way: D9 x 3 mm.
Using this dimensional identification for custom neodymium magnets will help eliminate unnecessary misunderstandings on both sides about dimensions.
Dimensions
1). Dimensional ranges
- Outer diameters: 1.5 – 300 mm (1/16 – 11 13/16 inches)
- Height: 0.3 – 120 mm (1/64 – 4 ¾ inches)
- Magnetic direction: 100mm (3 15/16 inches)
Note:
If your designs are close to the biggest or smallest values, we need to confirm details case by case.
2). The largest discs
- Outer diameter 250mm × height 60mm (4 ¾ x 2 3/8 inches)
- Outer diameter 80mm × height 120mm (3 1/8 x 4 ¾ inches)
3). The smallest discs
- Outer diameter 1.5mm × height 0.3mm (1/16 x 1/64 inches)
5. Magnetization directions
Disc neodymium magnets have 2 common magnetization directions.
They are the axial and radial magnetization directions.
Meanwhile, they still have 2 additional possible magnetization directions, though they are not commonly applied.
6. Coatings
Osenc can offer custom neodymium magnets with several different types of coatings.
They include nickel, zinc, epoxy, etc.
Each of them has its own unique properties and benefits.
Please refer to this page to pick the most appropriate coating for your magnets.
