Density ρ

3.25 g/cm³ at 20 °C


Elastic modulus E

300 GPa at 20 °C

Flexural strength σbend

730 MPa at 20 °C

Fracture toughness KIC

7 MPa·√m at 20 °C

Poisson's ratio ν

0.26 [-] at 20 °C


Coefficient of thermal expansion α

1.4E-6 1/K at 20 °C

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Max service temperature Tmax

1400 °C

in inert gas

Max service temperature, long Tmaxlong

1200 °C

in air

Thermal conductivity λ

25 W/(m·K) at 20 °C

Thermal shock parameter R1 R1

563 °C

Thermal shock parameter R2 R2

14068 W/m

This material data has been provided by FCT Ingenieurkeramik.

All metrics apply to room temperature unless otherwise stated. SI units used unless otherwise stated.
Equivalent standards are similar to one or more standards provided by the supplier. Some equivalent standards may be stricter whereas others may be outside the bounds of the original standard.