Durox AL

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Description

This alumina oxide ceramic is 99.8% pure, offers higher tensile strength, dielectric strength and thermal conductivity.

This material data has been provided by Materion Brush GmbH.

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.

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Properties

General

PropertyTemperatureValue

Density

23.0 °C

3.94 g/cm³

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Grain size

2 μm

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Water absorption

23.0 °C

0 %

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Mechanical

PropertyTemperatureValue

Compressive strength

23.0 °C

2.41 MPa

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Elastic modulus

23.0 °C

360 GPa

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Flexural strength

23.0 °C

379 MPa

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Hardness, Rockwell Superficial 45-N

23.0 °C

85 [-]

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Plane-Strain Fracture Toughnes

23.0 °C

4 MPa·√m

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Poisson's ratio

23.0 °C

0.22 [-]

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Tensile strength

23.0 °C

276 MPa

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Thermal

PropertyTemperatureValueComment

Coefficient of thermal expansion

23.0 °C

8E-6 1/K

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RT to 1000°C

Specific heat capacity

23.0 °C

837.36 J/(kg·K)

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Thermal conductivity

23.0 °C

30 W/(m·K)

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Electrical

PropertyTemperatureValueComment

Dielectric constant, 10GHz

23.0 °C

9.6 [-]

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Dielectric constant, 1MHz

23.0 °C

9.7 [-]

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Dielectric strength

23.0 °C

0.22 kV/mm

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AC, 6.35mm

Dissipation factor, 1MHz

23.0 °C

1E-4 [-]

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Electrical resistivity

23.0 °C

1.00E+13 Ω·m

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Minimum

Technological properties

Property
Application areas

photonics/ lasers, defense, energy, telecommunications and semiconductor manufacturing

Color

Off White