Sintered NdFeB magnets are composed of Nd, Fe, B and other few minor elements. Sintered NdFeB is the most powerful rare earth magnet today processing high energy product and good coercive force.
Customers usually require sintered NdFeB magnet with coating, such as Zinc, or Nickel, or NiCuNi multi-layer, or Epoxy etc.
Because of powerful magnetic force, if customers want to ship sintered NdFeB magnets by air or express, we always packing them with iron sheets and foam.
Because of high magnetic properties, Sintered NdFeB is widely used in electronics, electrical machinery, medical equipment, toys, packaging, hardware, machinery, aerospace and other areas, the more common are sintered NdFeB permanent magnet motors, speakers, magnetic separator, computer disk drives, MRI etc.
| § Typical Physical Properties § |
| Typical physical properties |
Unit |
Standard Data |
| Curie Temperature |
℃ |
310 ~ 380 |
| Maxmum Operating Temperature |
℃ |
80 ~ 230 |
| Hardness |
Hv |
620 |
| Electrical Resistivity |
Ω.cm |
1.8x10-4 - 2.0x10-4 |
| Density |
g/cm3 |
7.45-7.65 |
| Recoil Permeability |
|
≥30 |
| Magnetization Field Strength |
Koe /KA/m |
≥2400 |
| Bending Strength |
Mpa |
295-345 |
| Temp.Coefficient of Br |
%/℃ |
-0.1 ~ -0.2 |
| Temp.Coefficient of Hcj |
%/℃ |
-0.5 ~ -0.7 |
|
| § Dimension Range § |
| Block |
Length |
Width |
Thickness |
|
Disc |
Outter Dia. |
Thickness |
| Maximum |
250mm |
180 mm |
50mm |
Maximum |
220mm |
50mm |
| Minimum |
2.6mm |
1.8mm |
0.5mm |
Minimum |
1.2mm |
0.5mm |
| |
| Ring |
Outter Dia. |
Inner Dia |
Thickness |
|
Segment and other irregular shapes can
be made according to customer's
sample or blue print |
| Maximum |
220mm |
80mm |
50mm |
| Minimum |
2mm |
1.5mm |
0.5mm |
|
|
