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Granite vs. Hexagonal Boron Nitride

Granite belongs to the natural stone classification, while hexagonal boron nitride belongs to the non-oxide engineering ceramics. There are 13 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 granite and the bottom bar is hexagonal boron nitride.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 2200
21 to 250
Elastic (Young's, Tensile) Modulus, GPa 70
14 to 60
Flexural Strength, MPa 24
18 to 140
Poisson's Ratio 0.25
0.11

Thermal Properties

Maximum Temperature: Mechanical, °C 350
1030 to 2350
Specific Heat Capacity, J/kg-K 840
840 to 1610
Thermal Conductivity, W/m-K 2.7
29 to 96
Thermal Expansion, µm/m-K 7.4
0.54 to 18

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 8.5
61 to 200

Otherwise Unclassified Properties

Density, g/cm3 2.9
1.9 to 2.1

Common Calculations

Stiffness to Weight: Axial, points 14
4.1 to 18
Stiffness to Weight: Bending, points 48
42 to 69
Thermal Diffusivity, mm2/s 1.1
9.9 to 34