| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
Composition
|
Sm2Co17
XG
32 30 28 26 24 22
|
SmCo5
XG
24 22 20 18
|
Physical
characteristics
|
|
Curie temperature
|
℃
|
800 to 850
|
700 to 750
|
|
(K)
|
(1073 to
1123)
|
(973 to
1023)
|
|
Thermal expansion coefficient
|
C//
|
1℃
|
8×10-6
|
6×10-6
|
|
(1K)
|
(8×10-6)
|
(6×10-6)
|
|
C⊥
|
1℃
|
11×10-6
|
13×10-6
|
|
(1K)
|
(11×10-6
)
|
(13×10-6)
|
|
Thermal conductivity
|
Kcal/mhr℃
|
10
|
11
|
|
(W/mK)
|
(12)
|
(13)
|
|
Specific heat
|
Cal/g℃
|
8×10-2
|
9×10-2
|
|
(J/kgK)
|
(335)
|
(377)
|
|
Specific resistivity
|
Ω-cm
|
8.6×10-5
|
5.3×10-5
|
Mechanical
characteristics
|
|
Deflection strength
|
Kg/mm2
|
15
|
18
|
|
(N/m2)
|
(1.5×108)
|
(1.8×108)
|
|
Compressive strength
|
Kg/mm2
|
82
|
102
|
|
(N/m2)
|
(8×108)
|
(10×108)
|
|
Tensile strength
|
Kg/mm2
|
3.6
|
4.1
|
|
(N/m2)
|
(3.5×107)
|
(4×107)
|
|
Young’s modulus
|
Kg/mm2
|
1.2×104
|
1.6×104
|
|
(N/m2)
|
(1.2×1011)
|
(1.6×1011)
|
|
Vickers hardness
|
Hv
|
500 to 600
|
450 to 500
|
|
|
|
|
|
|
|
| |
|
| |
|
| |
| |
REVERSIBLE
TEMPERATURE COEFFICIENT
Reversible Temperature Coefficient
at -100℃ to +200℃ |
|
| |
|
| |
REVERSIBLE
TEMPERATURE CHANGE
|
| |
|
| |
|
|
|
Magnetization
Angle Error:6°Max
|
|
|
Special
Sm-Co Magnet
This
special SmCo magnets mainly apply to magnetic
suspension bearings、
precision sensor、special motors、 instruments and
microwave electron tube
(T.W.Tube) etc.
|
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
| |
|
