Alumina Discs, Tiles and Plates

Alumina Discs, Plates and Tiles

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GENERAL OVERVIEW

Alumina discs, plates and tiles are used to support products during heat treatment processes.

Due to Alumina’s unique combination of properties, Alumina discs, plates and tiles can be made incredibly thin and small without compromising on strength or durability. This makes them particularly useful as heat sinks and substrates within the tech industry.

Due to Alumina’s non-reactive nature, researchers, universities and laboratories often use Alumina Discs, Plates and Tiles to hold materials which they are reacting together.

For more applications and to discuss how Alumina Discs, Plates and Tiles can help your processes, please feel free to contact us.

TECHNICAL INFORMATION

Alumina Discs, Plates and Tiles
General Information
Type 95% Alumina 99% Alumina
Max Usage Temp. 1450 °C / 2650 °F 1600 °C / 2900 °F
Bulk Density 3.7 g/cm³ 3.8 g/cm³
Open Porosity <0.5% <0.25%
Modulus of Rupture @ Room Temp. 250 MPa 300 MPa
Modulus of Elasticity 350 GPa 400 GPa
Thermal Conductivity 25 W/mK 30 W/mK
Thermal Expansion at 20 – 1000 °C 8 x10-6/K 8 x10-6/K
KIC Fracture Toughness 2.5 MPam 3.0 MPam
Volume Resistance <1014Ωcm <1014Ωcm
Dielectric Constant 9 10
Dielectric Strength 20 kV/mm 30 kV/mm
Typical Chemical Analysis
Al₂O₃ 95% 99%
CaO 1.8% 0.2%
SiO₂ 2.5% 0.3%
MgO 0.5% 0.2%

All figures are typical figures determined using laboratory test pieces and might not always be an accurate representation of production item.

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