Alnico Magnets

Magnetic Properties
 
Alloy Grade
Max.Emergy Product
Bd X Hd
Residual Induction Br
Coercive Force Hc
Working Poin
bd ..............hd
Average Recoil Permeability
Maximum Magnetising Force
MGOe
KJ/m3
G
mT
Oe
KA/m
G
mT
Oe
KA/m
AT/cm
Alnico 3
1.4
11.14
6300
630
600
47.0
4000
400
355
28.0
4.5
2500
Alnico 5
5.50
43.8
12500
1250
640
51.0
9750
975
565
45.0
3.5
2500
Alnico 6
4.50
35.8
11500
1150
720
57.3
8200
820
550
44.0
4.0
2500
Alnico 8

(Isotropic)
2.8
22.2
6800
680
1350
107.0
-
-
-
-
-
-


 

Chemical Composition & Physical Properties


 
Chemical Composition weight %
Physical Properties
Co
Ni
Al
Cu
Ti
Si
Fe
Density gms. per cm3
Hardness Rock Well 'C'
Resistivity at 25 0C
Curie pt.0C
Mea ncoefficient of Thermal Expansion per 0Cx106
Reversible Variation in %of BH max per 0C
Alnico 3
4.0
25.5
11.5
4.5
-
-
54.5
7.00
52
62
780
12.0
-0.013
Alnico 5
24.0
14.0
8.0
3
-
-
51.0
7.30
50
50
870
11.3
-0.014
Alnico 6
24.0
15.0
8.0
3
0.5
-
49.5
7.35
50
55
860
11.4
-0.014
Alnico8

(Isotropic)
34.0
14.0
8.0
4
7
-
33.8
7.25
56
50
800
11.0
-0.014
 
 
 
 
 
H-1 & H-17, Old M.I.D.C. Area, Satara - 415004. Maharashtra, INDIA.
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