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Aluminum - SiC Metal Matrix Composite
Categories: Metal; Metal Matrix Composite

Material Notes: Addition of SiC into the aluminum matrix produces a resulting composite with the low density of aluminum but a higher modulus similar to steel. Composite has high fatigue resistance and excellent damping properties. The CTE can be significantly lower than unreinforced aluminum.

Al-SiC can be produced by a variety of forming processes including casting, infiltration of SiC preforms, and powder metallurgical routes.

Information assembled by MatWeb from proprietary grades in our data collection.

Key Words: Al/SiC
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Physical PropertiesMetricEnglishComments
Density 2.60 - 3.10 g/cc0.0939 - 0.112 lb/in³
Water Absorption 0.0 %0.0 %
 
Mechanical PropertiesMetricEnglishComments
Tensile Strength, Ultimate 250 - 650 MPa36300 - 94300 psi
Tensile Strength, Yield 250 - 500 MPa36300 - 72500 psi
Elongation at Break 2 - 6 %2 - 6 %
Modulus of Elasticity 100 - 200 GPa14500 - 29000 ksi
Flexural Strength 230 - 500 MPa33400 - 72500 psi
Poissons Ratio 0.22 - 0.290.22 - 0.29
Fatigue Strength 200 - 450 MPa29000 - 65300 psi
Fracture Toughness 10.0 - 20.0 MPa-m½9.10 - 18.2 ksi-in½
Shear Modulus 45.0 - 55.0 GPa6530 - 7980 ksi
 
Electrical PropertiesMetricEnglishComments
Electrical Resistivity 0.000009 ohm-cm0.000009 ohm-cm
 
Thermal PropertiesMetricEnglishComments
CTE, linear 6.00 - 16.0 µm/m-°C
@Temperature 25.0 - 100 °C
3.33 - 8.89 µin/in-°F
@Temperature 77.0 - 212 °F
Specific Heat Capacity 0.700 - 0.850 J/g-°C0.167 - 0.203 BTU/lb-°F
Thermal Conductivity 150 - 250 W/m-K1040 - 1740 BTU-in/hr-ft²-°F
 
Descriptive Properties
MatrixAl
Particle ReinforcementSiC30-70 vol% typical

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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MACOALSIC / 133382

Specialty Compounds RTP Company

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