| material characteristics: |
| property |
residual flux density |
coercive force |
intrinsic coercive force |
maximum energy product |
density |
curie
temp. |
maximum operating temperature |
recom-
mended magnet-
izing field |
| unit |
gauss |
oersted |
oersted |
MGOe |
g/cm3 |
°C |
°C |
kOe |
| symbol |
Br |
HCM |
HCJ |
BHmax |
D |
Tc |
|
|
| type: ferrite |
| processing:
ceramic, dry(isotropic)/wet(anisotropic) uniaxial pressing
and high temperature air sintering |
| features:
high operating temperature, corrosion resistant, low
electrical and thermal conductivity, low cost |
| C1* |
2300 |
1860 |
3250 |
1.05 |
4.8 |
450 |
250 |
10 |
| C1S* |
2360 |
1930 |
3300 |
1.2 |
4.8 |
450 |
250 |
10 |
| C5 |
3800 |
2400 |
2500 |
3.4 |
4.8 |
450 |
250 |
10 |
| C7 |
3400 |
3230 |
4000 |
2.75 |
4.8 |
450 |
250 |
10 |
| C8A |
3850 |
2950 |
3050 |
3.5 |
4.8 |
450 |
250 |
10 |
| C8B |
4200 |
2913 |
2960 |
4.12 |
4.8 |
450 |
250 |
10 |
| C9 |
3800 |
3516 |
4010 |
3.32 |
4.8 |
450 |
250 |
10 |
| C10 |
4000 |
3617 |
3510 |
3.82 |
4.8 |
450 |
250 |
10 |
| C11 |
4300 |
2512 |
2560 |
4.32 |
4.8 |
450 |
250 |
10 |
* = isotropic
(dry pressed) |
| type: neodymium iron boron
(sintered) |
| processing:
powder metallurgy, dry(anisotropic) isostatic or uniaxial
pressing with vacuum sintering |
| features:
high magnetic flux density, high magnetic and thermal
stability, low operating temperature, reactive(coating required),
expensive |
| N33 |
11500 |
10500 |
12000 |
32 |
7.4 |
310 |
80 |
30 |
| N35 |
11900 |
10900 |
12000 |
34.5 |
7.4 |
310 |
80 |
30 |
| N38 |
12300 |
11300 |
12000 |
37.5 |
7.4 |
310 |
80 |
30 |
| N40 |
12650 |
11600 |
12000 |
39.5 |
7.4 |
310 |
80 |
30 |
| N42 |
13000 |
11600 |
12000 |
41.5 |
7.4 |
310 |
80 |
30 |
| N45 |
13500 |
11000 |
12000 |
44.5 |
7.4 |
310 |
80 |
30 |
| type: neodymium iron boron
(bonded) |
processing:
injection molding or die pressing (isotropic) and thermal
cure |
features:
high strength; complex shapes (injection molding); reactive(coating
required), expensive |
N3.5 |
4000 |
3400 |
8300 |
3.5 |
4.2 |
360 |
100 |
35 |
N5.0 |
5100 |
3950 |
7500 |
5 |
5.0 |
360 |
100 |
35 |
N7.0 |
6000 |
4400 |
7500 |
7 |
5.7 |
360 |
100 |
35 |
N8.0 |
6300 |
5300 |
15000 |
8 |
5.9 |
305 |
120 |
45 |
N9.5 |
6800 |
5700 |
10500 |
9.5 |
6.1 |
470 |
120 |
35 |
| type: samarium cobalt |
processing:
powder metallurgy, dry(anisotropic) isostatic or uniaxial
pressing with vacuum sintering |
features:
high strength; reactive(coating required), most expensive |
| S18 |
8750 |
8000 |
17000 |
17 |
7.4 |
750 |
250 |
35 |
| S20 |
9400 |
8600 |
17000 |
20 |
7.4 |
750 |
250 |
35 |
| S24 |
9800 |
9450 |
17000 |
23 |
7.4 |
750 |
250 |
35 |
| S24G* |
9850 |
8700 |
21500 |
23 |
7.4 |
800 |
300 |
40 |
| S26G* |
10350 |
9700 |
21500 |
25 |
7.4 |
800 |
300 |
40 |
| S28G* |
10650 |
9750 |
20500 |
27 |
7.4 |
800 |
300 |
40 |
| S30G* |
10900 |
10150 |
13500 |
29 |
7.4 |
800 |
300 |
30 |
* = 2:17 grade
vs. 1:5 grade |
| type: alnico |
processing:
powder metallurgy process utilizing controlled hydrogen
atmosphere high temperature sintering |
features:
fine crystalline metallic structure; high temp. stability;
corrosion resistant; high mechanical strength |
| A11* |
6800 |
|
380 |
1.13 |
6.9 |
810 |
450 |
1.5 |
| A12* |
6000 |
|
500 |
1.2 |
6.9 |
810 |
450 |
2.0 |
| A15* |
7200 |
|
500 |
1.55 |
7.0 |
810 |
450 |
2.0 |
| A16* |
7000 |
|
600 |
1.6 |
7.0 |
810 |
450 |
2.5 |
| A46R** |
12000 |
|
600 |
4.65 |
7.3 |
860 |
525 |
2.5 |
| A50R** |
12500 |
|
600 |
5 |
7.3 |
860 |
525 |
2.5 |
| A55R** |
12500 |
|
650 |
5.5 |
7.3 |
860 |
525 |
2.5 |
| A65R** |
13000 |
|
700 |
6.5 |
7.3 |
860 |
525 |
2.5 |
| A75R** |
13500 |
|
740 |
7.5 |
7.3 |
860 |
525 |
2.7 |
| A35R** |
10000 |
|
720 |
3.5 |
7.3 |
860 |
525 |
2.7 |
| A45C*** |
7000 |
|
1750 |
4.5 |
7.3 |
860 |
525 |
6.3 |
| A22C*** |
5860 |
|
1250 |
2.2 |
7.3 |
860 |
550 |
4.6 |
| A40C*** |
8000 |
|
1250 |
4 |
7.3 |
860 |
550 |
4.6 |
| A50C*** |
8000 |
|
1380 |
5 |
7.3 |
860 |
550 |
4.8 |
| A75C*** |
9000 |
|
1380 |
7.5 |
7.3 |
860 |
550 |
4.8 |
| A90C*** |
10500 |
|
1400 |
9 |
7.3 |
860 |
550 |
5.2 |
* = isotropic;
** = anisotropic: high remanance; *** = anisotropic: high
coercivity |
| type: rubber/plastic |
processing:
injection molding |
features:
complex shapes, precise mechanical tolerances |
| R05 |
1500 |
1150 |
2000 |
0.5 |
3.7 |
450 |
120 |
10 |
| R07 |
1750 |
1300 |
1950 |
0.7 |
3.7 |
450 |
120 |
10 |
| R09 |
2050 |
1500 |
2400 |
0.9 |
3.7 |
450 |
120 |
10 |
| R11 |
2250 |
1825 |
2400 |
1.1 |
3.7 |
450 |
120 |
10 |
| R13 |
2350 |
2000 |
2800 |
1.3 |
3.8 |
450 |
120 |
10 |
| R14 |
2450 |
2100 |
2850 |
1.4 |
3.8 |
450 |
120 |
10 |
