3003 Aluminum vs. Silicon Nitride

3003 aluminum and silicon nitride belong to fundamentally different material chemistries. 3003 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 (29, in this case) are not shown.

For each property being compared, the top bar is 3003 aluminum and the bottom bar is silicon nitride.

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		2.8
Density, g/cm³		2.2 to 3.4

Elastic (Young's, Tensile) Modulus, GPa		70
Elastic (Young's, Tensile) Modulus, GPa		140 to 310

Maximum Temperature: Mechanical, °C		180
Maximum Temperature: Mechanical, °C		1000 to 1330

Poisson's Ratio		0.33
Poisson's Ratio		0.24 to 0.27

Specific Heat Capacity, J/kg-K		900
Specific Heat Capacity, J/kg-K		720 to 800

Stiffness to Weight: Axial, points		14
Stiffness to Weight: Axial, points		34 to 53

Stiffness to Weight: Bending, points		50
Stiffness to Weight: Bending, points		65 to 78

Thermal Conductivity, W/m-K		180
Thermal Conductivity, W/m-K		12 to 31

Thermal Diffusivity, mm²/s		71
Thermal Diffusivity, mm²/s		7.5 to 13

Thermal Expansion, µm/m-K		23
Thermal Expansion, µm/m-K		2.5 to 3.2

3003 Aluminum vs. Silicon Nitride

Material Properties

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