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Rulon Bearings

Calcium Lanthanum Sulfide, CaLa2S4
Categories: Ceramic; Sulfide/Chalcogenide

Key Words: CaLa2S4
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Physical PropertiesMetricEnglishComments
Density 4.53 g/cc0.164 lb/in³Theoretical
 
Mechanical PropertiesMetricEnglishComments
Vickers Microhardness 445 - 685445 - 685Alternate tests.
 548 - 648548 - 648Alternate tests.
Modulus of Elasticity 96.0 GPa13900 ksiYoung's Modulus
Flexural Strength 85.0 - 127 MPa12300 - 18400 psi3-pt. test
Poissons Ratio 0.260.26
Fracture Toughness 0.530 MPa-m½0.482 ksi-in½given in MN-3/2
Shear Modulus 38.0 GPa5510 ksiCalculated
 
Thermal PropertiesMetricEnglishComments
CTE, linear  13.8 µm/m-°C
@Temperature 500 °C
7.67 µin/in-°F
@Temperature 932 °F
 14.3 µm/m-°C
@Temperature 250 °C
7.94 µin/in-°F
@Temperature 482 °F
 14.8 µm/m-°C
@Temperature 20.0 °C
8.22 µin/in-°F
@Temperature 68.0 °F
Thermal Conductivity 1.70 W/m-K11.8 BTU-in/hr-ft²-°F
Melting Point 1780 - 1840 °C3240 - 3340 °FFirst detectable sign of melting.
Solidus 1810 °C3290 °F
 
Optical PropertiesMetricEnglishComments
IR Transmittance 74 %74 %Peak; Absorption Coefficient at 8 µm is 0.2.
 
Descriptive Properties
Crystal StructureCubicTh3P4; I(-4)3d

References for this datasheet.

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