Mullite vs. Aluminum Titanate

Both mullite and aluminum titanate are oxide-based engineering ceramics. There are 9 material properties with values for both materials. Properties with values for just one material (15, in this case) are not shown.

For each property being compared, the top bar is mullite and the bottom bar is aluminum titanate.

Mullite Aluminum Titanate (Al₂TiO₅)

Metric UnitsUS Customary Units

Material Properties

Density, g/cm³		2.7 to 3.0
Density, g/cm³		3.2

Elastic (Young's, Tensile) Modulus, GPa		110 to 170
Elastic (Young's, Tensile) Modulus, GPa		13

Flexural Strength, MPa		130 to 160
Flexural Strength, MPa		29

Fracture Toughness, MPa-m^1/2		2.0
Fracture Toughness, MPa-m^1/2		1.0

Maximum Temperature: Mechanical, °C		1680
Maximum Temperature: Mechanical, °C		1250

Stiffness to Weight: Axial, points		22 to 31
Stiffness to Weight: Axial, points		2.2

Stiffness to Weight: Bending, points		58 to 62
Stiffness to Weight: Bending, points		24

Thermal Conductivity, W/m-K		3.5 to 11
Thermal Conductivity, W/m-K		1.6

Thermal Expansion, µm/m-K		5.8
Thermal Expansion, µm/m-K		2.9

Mullite vs. Aluminum Titanate

Material Properties

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