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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 PropertiesOriginal ValueComments
Density 2.60 - 3.10 g/cc
Water Absorption 0.0 %
 
Mechanical PropertiesOriginal ValueComments
Tensile Strength, Ultimate 250 - 650 MPa
Tensile Strength, Yield 250 - 500 MPa
Elongation at Break 2 - 6 %
Modulus of Elasticity 100 - 200 GPa
Flexural Strength 230 - 500 MPa
Poissons Ratio 0.22 - 0.29
Fatigue Strength 200 - 450 MPa
Fracture Toughness 10.0 - 20.0 MPa-m½
Shear Modulus 45.0 - 55.0 GPa
 
Electrical PropertiesOriginal ValueComments
Electrical Resistivity 0.000009 ohm-cm
 
Thermal PropertiesOriginal ValueComments
CTE, linear 6.00 - 16.0 µm/m-°C
@Temperature 25.0 - 100 °C
Specific Heat Capacity 0.700 - 0.850 J/g-°C
Thermal Conductivity 150 - 250 W/m-K
 
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 go back to viewing the property data in MatWeb's normal format.

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