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Granite vs. Mullite

Granite belongs to the natural stone classification, while mullite belongs to the oxide-based engineering ceramics. There are 17 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 granite and the bottom bar is mullite.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 2200
800
Elastic (Young's, Tensile) Modulus, GPa 70
110 to 170
Flexural Strength, MPa 24
130 to 160
Poisson's Ratio 0.25
0.25
Tensile Strength: Ultimate (UTS), MPa 39
160

Thermal Properties

Maximum Temperature: Mechanical, °C 350
1680
Specific Heat Capacity, J/kg-K 840
950
Thermal Conductivity, W/m-K 2.7
3.5 to 11
Thermal Expansion, µm/m-K 7.4
5.8

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 8.5
16 to 17

Otherwise Unclassified Properties

Density, g/cm3 2.9
2.7 to 3.0

Common Calculations

Stiffness to Weight: Axial, points 14
22 to 31
Stiffness to Weight: Bending, points 48
58 to 62
Strength to Weight: Axial, points 3.8
15 to 17
Strength to Weight: Bending, points 9.0
22 to 24
Thermal Diffusivity, mm2/s 1.1
1.4 to 3.7
Thermal Shock Resistance, points 5.4
12 to 19