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Rulon Bearings

CoorsTek Reaction Bonded Silicon Carbide, SCRB (SC-2)
Categories: Ceramic; Carbide

Material Notes: Thermal Shock Delta Tc = 400°C - Thermal shock tests are performed by quenching samples in water from different elevated temperatures. Delta Tc is the change in temperature which results in a sharp decrease in the flexural strength of the sample.

Information provided by CoorsTek.

Key Words: SiC
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Physical PropertiesMetricEnglishComments
Density 3.10 g/cc0.112 lb/in³ASTM C20
Water Absorption 0.00 %0.00 %ASTM C373
Particle Size 12 µm12 µmAverage Crystal Size - Thin Section Test
 
Mechanical PropertiesMetricEnglishComments
Knoop Microhardness 24.524.51000 g load
Tensile Strength, Ultimate 307 MPa44500 psiACMA Test #4
Modulus of Elasticity 393 GPa57000 ksiASTM C848
Flexural Strength 462 MPa67000 psiASTM F417
Compressive Strength 2500 MPa363000 psiASTM C773
Poissons Ratio 0.190.19ASTM C848
Fracture Toughness 4.00 - 5.00 MPa-m½3.64 - 4.55 ksi-in½
Shear Modulus 165 GPa23900 ksiCalculated
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity  <= 1000 ohm-cm
@Temperature 500 °C
<= 1000 ohm-cm
@Temperature 932 °F
 <= 1000 ohm-cm
@Temperature 1000 °C
<= 1000 ohm-cm
@Temperature 1830 °F
 <= 1000 ohm-cm
@Temperature 25.0 °C
<= 1000 ohm-cm
@Temperature 77.0 °F
 
Thermal PropertiesMetricEnglishComments
CTE, linear 4.30 µm/m-°C
@Temperature 25.0 - 1000 °C
2.39 µin/in-°F
@Temperature 77.0 - 1830 °F
ASTM C372
Specific Heat Capacity 0.700 J/g-°C0.167 BTU/lb-°FASTM E1269
Thermal Conductivity 125 W/m-K868 BTU-in/hr-ft²-°FASTM C408
Maximum Service Temperature, Air 1400 °C2550 °FNo Load
 
Optical PropertiesMetricEnglishComments
Transmission, Visible 0.00 %0.00 %

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