Many customers encounter this problem when purchasing magnets: they clearly buy "strong magnets", but when they come back to use them, they find that the suction is not enough or the price is much higher than expected. In fact, choosing a magnet is not necessarily the stronger the better, the key depends on the usage scenario.
1. What is the core difference between neodymium iron boron and ferrite?
| Comparison item | Neodymium iron boron (NdFeB) | Ferrite |
|---|---|---|
| Magnetic strength
| Strong, 5-10 times stronger than ferrites of the same volume | Weak, but cost-effective |
| Temperature resistance performance | 80 ℃ -220 ℃ (depending on the brand) | Generally, it can reach temperatures above 250 ℃
|
| Rust prevention ability | Electroplating/coating treatment is required | It is corrosion-resistant and does not require additional protection |
| Price level | Higher | Cheap, suitable for large-scale use |
| Common applications | Motor rotor, sensor, earphone, precision fixture | Speaker, magnetic hook, whiteboard eraser, packaging box |
2. How to choose without stepping into pitfalls?
1. Check suction requirements: If you need small volume and large suction (such as micro motors, precision positioning), choose neodymium iron boron; If it is just ordinary adsorption (such as refrigerator stickers, file racks), ferrite is completely sufficient.
2. Consider work environment: prioritize ferrite or neodymium iron boron with coating (such as nickel copper nickel) in humid or outdoor environments; High temperature conditions (over 150 ℃) require the selection of neodymium iron boron with high coercivity grades.
3. Looking at the budget: For large-scale procurement with less extreme magnetic requirements, ferrite has a significant cost advantage; For small batch high-precision requirements, neodymium iron boron is more suitable.
III. Hesheng Magnetic Industry reminds you of its 20 years of experience
Neodymium iron boron magnet material is brittle, avoid severe impact during installation, otherwise it is easy to break
After the plating layer is damaged, it is easy to oxidize and rust. When storing, pay attention to moisture prevention
When customizing magnets, we provide information on usage temperature, required suction force, and installation space size. The manufacturer can directly match the brand for you, saving time and effort
Hesheng Magnetic Mining has over 20 years of experience in magnet production and processing. The full range of magnetic materials such as neodymium iron boron, ferrite, samarium cobalt, aluminum nickel cobalt, etc. can be customized, supporting processing based on drawings and samples, and providing technical follow-up throughout the entire process from selection to delivery. If you are unsure which magnet to choose, please feel free to contact our technical team to help you evaluate the solution for free.