MakeItFrom.com
Menu (ESC)

2024 Aluminum vs. Silicon Nitride

2024 aluminum and silicon nitride belong to fundamentally different material chemistries. 2024 aluminum is a metal, while silicon nitride is a ceramic material. Therefore, their performance will be even more dissimilar than would be suggested by the difference in properties. There are 10 material properties with values for both materials. Properties with values for just one material (28, in this case) are not shown.

For each property being compared, the top bar is 2024 aluminum and the bottom bar is silicon nitride.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm3 3.0
2.2 to 3.4
Elastic (Young's, Tensile) Modulus, GPa 71
140 to 310
Maximum Temperature: Mechanical, °C 200
1000 to 1330
Poisson's Ratio 0.33
0.24 to 0.27
Specific Heat Capacity, J/kg-K 880
720 to 800
Stiffness to Weight: Axial, points 13
34 to 53
Stiffness to Weight: Bending, points 46
65 to 78
Thermal Conductivity, W/m-K 120
12 to 31
Thermal Diffusivity, mm2/s 46
7.5 to 13
Thermal Expansion, µm/m-K 23
2.5 to 3.2