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SiAlON vs. Granite

SiAlON belongs to the non-oxide engineering ceramics classification, while granite belongs to the natural stone. There are 18 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is SiAlON and the bottom bar is granite.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 2620
2200
Elastic (Young's, Tensile) Modulus, GPa 290
70
Flexural Strength, MPa 680
24
Poisson's Ratio 0.23
0.25
Shear Modulus, GPa 120
27
Tensile Strength: Ultimate (UTS), MPa 190
39

Thermal Properties

Maximum Temperature: Mechanical, °C 1200
350
Specific Heat Capacity, J/kg-K 880
840
Thermal Conductivity, W/m-K 19
2.7
Thermal Expansion, µm/m-K 3.6
7.4

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 8.3
8.5

Otherwise Unclassified Properties

Density, g/cm3 3.3
2.9

Common Calculations

Stiffness to Weight: Axial, points 50
14
Stiffness to Weight: Bending, points 67
48
Strength to Weight: Axial, points 16
3.8
Strength to Weight: Bending, points 22
9.0
Thermal Diffusivity, mm2/s 6.4
1.1
Thermal Shock Resistance, points 13
5.4