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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
|
2
|
3
|
4
|
Maximum Energy Product (BHmax.)
|
MGOe
|
1.60
|
1.40
|
1.35
|
kJ/m3
|
12.7
|
11.1
|
10.7
|
Residual Induction (Br)
|
Gauss
|
7200
|
7000
|
5500
|
mT
|
720
|
700
|
550
|
Required Magnetizing Field
|
Oersteds
|
2000
|
2000
|
3000
|
kA/m
|
160
|
160
|
240
|
Coercive Force (Hc)
|
Oersteds
|
560
|
475
|
720
|
kA/m
|
45
|
38
|
57
|
Recoil Permeability (µr)
|
G/Oe
|
6.2
|
5.1
|
4.1
|
mT/(kA/m)
|
7.8
|
6.4
|
5.2
|
Permeance Coefficient at BH Max.
|
G/Oe
|
12.0
|
14.0
|
7.0
|
mT/(kA/m)
|
15.0
|
17.5
|
9.0
|
Induction @ Max. Energy Product
|
Gauss
|
4400
|
4450
|
3100
|
mT
|
440
|
445
|
310
|
Curie Temperature (Tc)
|
°C
|
810
|
810
|
810
|
Reversible Temperature Coefficients
|
Induction (Br)
|
0.02
|
0.02
|
0.02
|
Material Properties
|
2
|
3
|
4
|
Density
|
Lbs/in.3
|
0.257
|
0.249
|
0.253
|
g/cc
|
7.11
|
6.89
|
7.00
|
Electrical Resistivity at 25ºC
|
µOhms • cm per cm2
|
65
|
60
|
65
|
Tensile Strength
|
psi
|
3000
|
12000
|
9000
|
N/mm2
|
20
|
80
|
60
|
Transverse Modulus of Rupture
|
psi
|
7200
|
23000
|
24000
|
N/mm2
|
50
|
160
|
165
|
Coefficient of Thermal Expansion
|
per ºC x 106
|
12.4
|
13.0
|
13.1
|
Rockwell Hardness
|
RC
|
45
|
45
|
45
|
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