| ALNICO MAGNET | |
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(I) Introduction: |
| These metallic permanent magnets are based on Alnico alloys. Depending on composition and manufacturing process isotropic and anisotropic magnets can be produced with a wide range of magnetic properties. The magnets can be made either by casting or sintering process, this depends on the shape, weight and tolerances. ALNICO magnets are especially being used, when a low temperature dependence is required. | |
| (II) MAGNETIC PROPERTIES OF ALNICO MAGNET BY CASTING: |
|
Remanence |
Coercivity |
Maximum |
Temp. coff. |
Density |
||||||
| Item | Br |
bHc |
iHc |
(BH)max |
%/C |
g/cm³ |
|||||
| GRADE | G |
mT |
Oe |
kA/m |
Oe |
kAm |
MGOe |
kj/m3 |
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| ALNICO-C5 | Typical | 12.6 |
1.26 |
0.63 |
50 |
0.63 |
50 |
4.85 |
38.8 |
-0.02 |
7.3 |
| Minimum | 12 |
1.2 |
0.6 |
47.8 |
0.6 |
47.8 |
4.63 |
37 |
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| ALNICO-C8 | Typical | 8.4 |
0.84 |
1.45 |
115 |
1.45 |
115 |
5.0 |
40 |
-0.02 |
7.3 |
| Minimum | 8.0 |
0.80 |
1.38 |
110 |
1.38 |
110 |
4.75 |
38 |
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| (III) MAGNETIC PROPERTIES OF ALNICO MAGNET BY SINTERING: |
|
Remanence |
Coercivity |
Maximum |
Temp. coff. |
Density |
||||||
| Item | Br |
bHc |
iHc |
(BH)max |
%/C |
g/cm3 |
|||||
| GRADE | G |
mT |
Oe |
kA/m |
Oe |
kAm |
MGOe |
kj/m3 |
|||
| ALNICO-S5 | Typical | 11.0 |
1.10 |
0.62 |
50 |
0.62 |
50 |
3.65 |
29.2 |
-0.026 |
7.0 |
| Minimum | 10.5 |
1.05 |
0.69 |
47.2 |
0.59 |
47.2 |
3.5 |
28 |
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| ALNICO-S8 | Typical | 7.15 |
0.715 |
1.78 |
142 |
1.78 |
142 |
4.7 |
37.6 |
-0.026 |
7.0 |
| Minimum | 6.8 |
0.68 |
1.70 |
136 |
1.70 |
136 |
4.5 |
36 |
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ATLAS MAGTECH LTD. |
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Unit 18, 23, 7/F Goldfield Industrial Centre, No. 1, Sui Wo Road, Fo Tan, Shatin, N.T. |
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Tel: (852) 2662 7028 Fax: (852) 2662 7029 |
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Copyright 2004, All rights reserved. |
