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Carbon-carbon vs. Low Expansion Glass-ceramic

Carbon-carbon belongs to the non-oxide engineering ceramics classification, while low expansion glass-ceramic belongs to the glass and glass-ceramics. There are 15 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

For each property being compared, the top bar is carbon-carbon and the bottom bar is low expansion glass-ceramic.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 95
83
Poisson's Ratio 0.32
0.22
Tensile Strength: Ultimate (UTS), MPa 19
53

Thermal Properties

Maximum Temperature: Mechanical, °C 2400
690
Specific Heat Capacity, J/kg-K 760
800
Thermal Conductivity, W/m-K 40
1.5
Thermal Expansion, µm/m-K 4.0
1.7

Electrical Properties

Electrical Resistivity Order of Magnitude, 10x Ω-m -5.0
11

Otherwise Unclassified Properties

Density, g/cm3 1.7
2.4

Common Calculations

Stiffness to Weight: Axial, points 31
19
Stiffness to Weight: Bending, points 89
59
Strength to Weight: Axial, points 3.0
6.1
Strength to Weight: Bending, points 9.1
13
Thermal Diffusivity, mm2/s 31
0.76
Thermal Shock Resistance, points 3.5
28