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| TABLE OF PROPERTIES : 2, 3, 4 • • 5, 5CC, 6, 800, 800 Hi Hc • • 8B, 8HE, 8H, 9 |
| DEMAGNETIZATION CURVES : 2, 3, 4 • • 5, 5CC, 6, 800, 800 Hi Hc • • 8B, 8HE, 8H, 9 |
| TEMPERATURE EFFECTS CURVES : 2, 3, 4 • • 5, 5CC, 6, 800, 800 Hi Hc • • 8B, 8HE, 8H, 9 |
CAST ALNICO PROPERTIES
Typical Values at 20°C
| |
ALNICO GRADE |
Magnetic Properties
|
8B
|
8HE
|
8H
|
9
|
Maximum Energy Product (BHmax)
|
MGOe
|
5.50
|
6.00
|
5.50
|
10.50
|
kJ/m3
|
43.8
|
47.7
|
43.8
|
83.6
|
Residual Induction (Br)
|
Gauss
|
8300
|
9300
|
7400
|
11200
|
mT
|
830
|
930
|
740
|
1120
|
Required Magnetizing Field
|
Oersteds
|
6000
|
6000
|
6000
|
6000
|
kA/m
|
480
|
480
|
480
|
480
|
Coercive Force (Hc)
|
Oersteds
|
1650
|
1550
|
1900
|
1375
|
kA/m
|
131
|
123
|
151
|
109
|
Recoil Permeability (µr)
|
G/Oe
|
2.0
|
2.0
|
2.0
|
1.3
|
mT/(kA/m)
|
2.5
|
2.5
|
2.5
|
1.6
|
Permeance Coefficient at BH max.
|
G/Oe
|
4.5
|
5.5
|
3.5
|
7.5
|
mT/(kA/m)
|
5.5
|
7.0
|
4.5
|
9.5
|
Induction @ Max. Energy Product
|
Gauss
|
5000
|
5750
|
4400
|
8900
|
mT
|
500
|
575
|
440
|
890
|
Curie Temperature (Tc)
|
ºC
|
860
|
860
|
860
|
860
|
Reversible Temperature Coefficients
|
Induction (Br)
|
0.02
|
0.02
|
0.02
|
0.02
|
Material Properties
|
8B
|
8HE
|
8H
|
9
|
Density
|
Lbs/in.3
|
0.262
|
0.262
|
0.262
|
0.262
|
g/cc
|
7.25
|
7.25
|
7.25
|
7.25
|
Electrical Resistivity at 25ºC
|
µOhms • cm per cm2
|
50
|
50
|
50
|
50
|
Tensile Strength
|
psi
|
9000
|
10000
|
8500
|
7000
|
N/mm2
|
60
|
70
|
60
|
50
|
Transverse Modulus of Rupture
|
psi
|
30000
|
30000
|
30000
|
8000
|
N/mm2
|
205
|
205
|
205
|
55
|
Coefficient of Thermal Expansion
|
per ºC x 106
|
11.0
|
11.0
|
11.0
|
11.0
|
Rockwell Hardness
|
RC
|
56
|
56
|
56
|
56
|
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