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Graphite vs. Titanium Diboride

Both graphite and titanium diboride are non-oxide engineering ceramics. There are 13 material properties with values for both materials. Properties with values for just one material (9, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is graphite and the bottom bar is titanium diboride.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 90
3540
Elastic (Young's, Tensile) Modulus, GPa 21
290
Flexural Strength, MPa 80
380
Tensile Strength: Ultimate (UTS), MPa 18
280

Thermal Properties

Maximum Temperature: Mechanical, °C 220
1270
Thermal Conductivity, W/m-K 6.0
58
Thermal Expansion, µm/m-K 4.9
8.0

Otherwise Unclassified Properties

Density, g/cm3 1.8
4.5

Common Calculations

Stiffness to Weight: Axial, points 6.7
35
Stiffness to Weight: Bending, points 53
49
Strength to Weight: Axial, points 2.9
17
Strength to Weight: Bending, points 8.7
21
Thermal Shock Resistance, points 12
8.7