|
Neodymium Iron Boron Properties
|
Typical
Magnetic Properties
|
Grade |
Remanence (Gauss) |
Coercivity (Oersteds) |
Max. Energy Prod (MGOe) |
Characteristics |
|
Br |
Hc |
min Hci |
BHmax |
Tc of Br (%/°C) |
Tc of Hci (%/°C) |
Max. Op. Temp.* |
|
N5513 |
15,000 |
12,000 |
13,000 |
55 |
-0.12 |
-0.78 |
140°C |
|
N5214 |
14,700 |
10,300 |
14,000 |
52 |
-0.11 |
-0.65 |
150°C |
|
N4816 |
14,100 |
12,700 |
16,000 |
48 |
-0.11 |
-0.61 |
150°C |
|
N4221 |
13,200 |
12,000 |
21,000 |
42 |
-0.10 |
-0.54 |
160°C |
|
N3625 |
12,400 |
11,100 |
25,000 |
36 |
-0.10 |
-0.51 |
180°C |
|
N3430 |
11,900 |
10,700 |
30,000 |
34 |
-0.10 |
-0.46 |
180°C |
|
|
|
* Maximum
Service Temperature depends on permeance coefficient
of magnetic circuit. Temperatures shown here are
guidelines only.
Other standard grades also stocked. The above are
representative of the span of magnetic properties
available.
Scatter plot of Hci versus Br for the grades shown
above
|
Physical and Thermal Properties
|
Description |
Units |
SmCo 1-5 Alloys |
SmCo 2-17 Alloys |
NdFeB |
|
Mechanical Properties: |
|
Young's Modulus |
(106
psi) |
23 |
17 |
22 |
|
(GPa) |
158 |
117 |
150 |
|
Tensile Strength |
(103
psi) |
6 |
5 |
12 |
|
(MPa) |
41 |
34 |
83 |
|
Density |
lb/in3 |
0.296 |
0.303 |
0.267 |
|
g/cm3 |
8.2 |
8.4 |
7.4 |
|
Coefficient of thermal expansion: |
|
Perpendicular to orientation |
/°C |
13 x 10-6 |
11 x 10-6 |
-4.8 x 10-6 |
|
Parallel to orientation |
/°C |
6 x 10-6 |
8 x 10-6 |
3.4 x 10-6 |
|
Electrical resistivity |
μΩm |
0.05 |
0.86 |
1.6 |
|
General Magnetic Characteristics: |
|
Curie temperature |
°C |
750 |
825 |
310 |
|
°F |
1,380 |
1,500 |
590 |
|
Recoil permeability |
|
1.05 |
1.05 |
1.05 |
|
Max. Operating Temperature (dependent on
operating conditions) |
°C |
150 |
300 |
150 |
|
°F |
570 |
570 |
300 |
|
|
