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Elmet Technologies

Alliance S-28B Samarium Cobalt Magnetic Material  (discontinued **)
Categories: Metal; Electronic/Magnetic Alloy; Nonferrous Metal; Cobalt Alloy

Key Words: SmCo Magnet Magnets
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Physical PropertiesMetricEnglishComments
Density 8.40 g/cc0.303 lb/in³
 
Mechanical PropertiesMetricEnglishComments
Hardness, Vickers 640640
Modulus of Elasticity 150 GPa21800 ksi
Flexural Strength 90.0 - 150 MPa13100 - 21800 psi
Compressive Strength 650 MPa94300 psi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.0000750 - 0.0000850 ohm-cm0.0000750 - 0.0000850 ohm-cm
Magnetic Coercive Force, Hc 10000 Oe10000 Oe
 20000 Oe20000 OeIntrinsic
Magnetic Remanence, Br 10900 Gauss10900 Gauss
Magnetic Maximum Energy Product, BH 28 MGOe28 MGOe
Curie Temperature 750 °C1380 °F
 
Thermal PropertiesMetricEnglishComments
CTE, linear 10.0 µm/m-°C
@Temperature 20.0 °C
5.56 µin/in-°F
@Temperature 68.0 °F
Parallel DOM
CTE, linear, Transverse to Flow 12.0 µm/m-°C
@Temperature 23.0 °C
6.67 µin/in-°F
@Temperature 73.4 °F
Perpendicular to M
Specific Heat Capacity 0.390 J/g-°C0.0932 BTU/lb-°F
Thermal Conductivity 12.0 W/m-K83.3 BTU-in/hr-ft²-°F
Maximum Service Temperature, Air 300 °C572 °F
 
Descriptive Properties
Reversible Temp Coef., Bd-0.03 %/°C
Reversible Temp Coef., Hd+0.23 %/°C
Temperature Coefficient, Br-0.03 %/°C(20-100°C)
Temperature Coefficient, Hci-0.18 %/°C(20-100°C)

**
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