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Carbon-carbon vs. Hexagonal Boron Nitride

Both carbon-carbon and hexagonal boron nitride are non-oxide engineering ceramics. There are 13 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 240
21 to 250
Elastic (Young's, Tensile) Modulus, GPa 95
14 to 60
Poisson's Ratio 0.32
0.11

Thermal Properties

Maximum Temperature: Corrosion, °C 350
1140 to 2800
Maximum Temperature: Mechanical, °C 2400
1030 to 2350
Specific Heat Capacity, J/kg-K 760
840 to 1610
Thermal Conductivity, W/m-K 40
29 to 96
Thermal Expansion, µm/m-K 4.0
0.54 to 18

Electrical Properties

Electrical Resistivity Order of Magnitude, 10x Ω-m -5.0
13 to 15

Otherwise Unclassified Properties

Density, g/cm3 1.7
1.9 to 2.1

Common Calculations

Stiffness to Weight: Axial, points 31
4.1 to 18
Stiffness to Weight: Bending, points 89
42 to 69
Thermal Diffusivity, mm2/s 31
9.9 to 34