Segment Rare Earth Neodymium Magnets , Permanent Neodymium Nickel Coating
NdFeB magnets are mainly composed of neodymium(32%), iron(64%), boron(1%), and a few quantity rare earth material, such as Dy, Tb, Co, Nb, Ga, Al, Cu,etc.Neodymium magnet (Nd-Fe-B) is one of the highest property and strongest permanent magnet by now, are made through powder metallurgy manufacturing techniques. Neodymium magnet is regarded as “Magnet King” due to its recorded high remanence, coercive force and maximum energy product. With Neodymium magnet rapid development, many high-tech products were developed. Especially its application in motors makes products miniaturization and micromation.
| Material |
rare earth |
| Grade |
N42 |
| Shape |
Arc, segment |
| Plating |
Ni or Zinc |
| Max. Working TEMP. |
120 Celsius Degree |
| Density |
7.4 g/cm3 |
Features
Excellent cost to performance ratio
High resistance to magnetic demagnetization
High flux, High remanence, high coercive force, high energy
Low temperature coefficient and low loss of irreversible
This type magnet is widely used in genetors, motors, IT products, Nuclear Magnetic Resonance, speaker and other products. Neodymium magnet is easily rust and oxidated, so their surface must be plated Zn, Ni, Silver, Gold or made phosphor and epoxy treatment.
Magnetic Characteristic
| Grade |
Br mt(KG) |
Hcb Koe(KA/m) |
iHc Koe(KA/m) |
(BH)max |
TW℃ |
| |
|
|
|
KJ/m3 (MGOe) |
|
| N35 |
1170-1210(11.7-12.1) |
≧10.8(≧860) |
≧12(≧955) |
263-287(33-36) |
80 |
| N38 |
1210-1250(12.1-12.5) |
≧10.8(≧860) |
≧12(≧955) |
287-310(36-39) |
80 |
| N40 |
1250-1280(12.5-12.8) |
≧11.6(≧923) |
≧12(≧955) |
302-326(38-41) |
80 |
| N42 |
1280-1320(12.8-13.2) |
≧11.6(≧923) |
≧12(≧955) |
318-342(40-43) |
80 |
| N45 |
1320-1380(13.2-13.8) |
≧11.0(≧876) |
≧12(≧955) |
342-366(43-46) |
80 |
| N48 |
1380-1420(13.8-14.2) |
≧10.5(≧835) |
≧12(≧955) |
366-390(46-49) |
80 |
| N50 |
1380-1450(13.8-14.5) |
≧10.5(≧835) |
≧12(≧955) |
474-406(47-51) |
80 |
