Silicon Nitride vs. Aluminum Titanate

Silicon nitride belongs to the non-oxide engineering ceramics classification, while aluminum titanate belongs to the oxide-based engineering ceramics. There are 9 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 silicon nitride and the bottom bar is aluminum titanate.

Silicon Nitride (Si₃N₄)Aluminum Titanate (Al₂TiO₅)

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Material Properties

Density, g/cm³		2.2 to 3.4
Density, g/cm³		3.2

Elastic (Young's, Tensile) Modulus, GPa		140 to 310
Elastic (Young's, Tensile) Modulus, GPa		13

Flexural Strength, MPa		130 to 810
Flexural Strength, MPa		29

Fracture Toughness, MPa-m^1/2		3.1 to 6.2
Fracture Toughness, MPa-m^1/2		1.0

Maximum Temperature: Mechanical, °C		1000 to 1330
Maximum Temperature: Mechanical, °C		1250

Stiffness to Weight: Axial, points		34 to 53
Stiffness to Weight: Axial, points		2.2

Stiffness to Weight: Bending, points		65 to 78
Stiffness to Weight: Bending, points		24

Thermal Conductivity, W/m-K		12 to 31
Thermal Conductivity, W/m-K		1.6

Thermal Expansion, µm/m-K		2.5 to 3.2
Thermal Expansion, µm/m-K		2.9

Silicon Nitride vs. Aluminum Titanate

Material Properties

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