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Carbon-carbon vs. Boron Carbide

Both carbon-carbon and boron carbide are non-oxide engineering ceramics. There are 16 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is carbon-carbon and the bottom bar is boron carbide.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 240
1710 to 2200
Elastic (Young's, Tensile) Modulus, GPa 95
240 to 460
Poisson's Ratio 0.32
0.17 to 0.19
Tensile Strength: Ultimate (UTS), MPa 19
350

Thermal Properties

Maximum Temperature: Mechanical, °C 2400
1000 to 2500
Specific Heat Capacity, J/kg-K 760
950
Thermal Conductivity, W/m-K 40
31 to 90
Thermal Expansion, µm/m-K 4.0
4.5 to 5.6

Electrical Properties

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

Otherwise Unclassified Properties

Density, g/cm3 1.7
2.1 to 2.7

Common Calculations

Stiffness to Weight: Axial, points 31
63 to 100
Stiffness to Weight: Bending, points 89
91 to 100
Strength to Weight: Axial, points 3.0
37 to 47
Strength to Weight: Bending, points 9.1
42 to 53
Thermal Diffusivity, mm2/s 31
16 to 38
Thermal Shock Resistance, points 3.5
9.7 to 20