Aluminum titanate is a ceramic with an orthorhombic crystalline structure, composed of alumina (Al₂O₃) and titanium dioxide (TiO₂) in a specific chemical ratio. Al₂TiO₅ possesses a high melting point (1860 ℃ ± 10 ℃), a low coefficient of thermal expansion (α < 2.0 × 10⁻⁶ / ℃ from room temperature to 1000 ℃), and superior thermal shock resistance.

In addition, it exhibits non-wetting properties with many melted metals (especially non-ferrous metals) and melted glass. Thanks to these properties, aluminum titanate ceramics have a wide range of applications in demanding operating conditions. Due to its low thermal expansion, high thermal shock resistance, and non-wetting by liquid aluminum, it is an ideal material for riser tubes.

Technical Features

• Composition: Al₂O₃ + TiO₂ + Stabilizer

• Volumetric Density: 3.2 g/cm³

• Bending Strength: 50 MPa

• Visible Porosity: <7%

• Coefficient of Thermal Expansion: 1.15 × 10⁻⁶ / ℃

• Thermal conductivity (1200 ℃): 0.86 W/m·K

Features

• Low thermal expansion coefficient

• Superior thermal shock resistance.

• Not wettable by melted non-ferrous metals such as liquid aluminum.

• High corrosion resistance

• High temperature resistance (suitable for use up to 1400 ℃)

Areas of Application

• Aluminum foundries