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Silicon Nitride vs. Sandstone

Silicon nitride belongs to the non-oxide engineering ceramics classification, while sandstone belongs to the natural stone. There are 12 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 silicon nitride and the bottom bar is sandstone.

Metric UnitsUS Customary Units

Mechanical Properties

Compressive (Crushing) Strength, MPa 600 to 2950
120
Elastic (Young's, Tensile) Modulus, GPa 140 to 310
38
Poisson's Ratio 0.24 to 0.27
0.25

Thermal Properties

Maximum Temperature: Mechanical, °C 1000 to 1330
400
Specific Heat Capacity, J/kg-K 720 to 800
880
Thermal Conductivity, W/m-K 12 to 31
5.6
Thermal Expansion, µm/m-K 2.5 to 3.2
10

Electrical Properties

Dielectric Strength (Breakdown Potential), kV/mm 18
8.5

Otherwise Unclassified Properties

Density, g/cm3 2.2 to 3.4
2.6

Common Calculations

Stiffness to Weight: Axial, points 34 to 53
8.1
Stiffness to Weight: Bending, points 65 to 78
43
Thermal Diffusivity, mm2/s 7.5 to 13
2.4