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95% Alumina

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95 Alumina exhibits better properties than 92 Alumina and a more competitive price, making it the most popular ceramic material in China. It widely used in complex shape design like heat sink, disc, insulator and igniter.

Ashby charts

See where 95% Alumina falls on the material property chart for Density against Elastic modulus in your materials selection and design process. Our Ashby charts are interactive with more technical data upon clicking. Sign up to get access to this premium feature for free.





3.7 g/cm³ at 20 °C


Compressive strength


2068 MPa at 20 °C

Show Aluminium Oxide materials with Compressive strength of 2068 MPa at 20 °C

Elastic modulus


280 - 320 GPa at 20 °C

Show Aluminium Oxide materials with Elastic modulus of 280 - 320 GPa at 20 °C

Flexural strength


323.7 MPa at 20 °C

Show Aluminium Oxide materials with Flexural strength of 323.7 MPa at 20 °C

Hardness, Vickers


1377 [-] at 20 °C

Show Aluminium Oxide materials with Hardness, Vickers of 1377 [-] at 20 °C

Plane-Strain Fracture Toughnes


4 - 5 MPa·√m at 20 °C

Show Aluminium Oxide materials with Plane-Strain Fracture Toughnes of 4 - 5 MPa·√m at 20 °C

Poisson's ratio


0.22 - 0.23 [-] at 20 °C

Show Aluminium Oxide materials with Poisson's ratio of 0.22 - 0.23 [-] at 20 °C


Coefficient of thermal expansion


8.2E-6 1/K at 20 °C

Specific heat capacity


780 J/(kg·K) at 20 °C

Thermal conductivity


23 W/(m·K) at 20 °C

Thermal shock parameter R2


200 W/m


Dielectric constant


9 [-] at 20 °C

Dielectric strength


15 kV/mm at 20 °C

Electrical resistivity


1.00E+16 Ω·m at 20 °C

Loss tangent


4E-4 [-] at 20 °C

Technological properties

Application areas

Wear ceramic parts: Ceramic Nozzles, Sprayers Cyclones, Homogenising devices, Ceramic Linings, Milling Systems, Ceramic Thread guides - Precision components: Ceramic Measuring Components, Ceramic Control systems, (Micro) dosing valves, Electronic Components, Mechatronics, Optical applications - Machine-construction: Positioning Guide parts, Coatings, Transport ceramic rollers, Ceramic Dies, Textile machine parts, Furnace parts - Rotating equipment: Ceramic Sliding Bearings, Ceramic Ball bearings, Mechanical seals, Ceramic Plungers, Ceramic Valves / fittings, Dosing components - Cutting & moulding: Ceramic knives, Metal-forming tools, Seaming rolls, Ceramic Punches, Drawing dies

Processing methods

Ceramic Injection Molding, Low Pressure Injection Molding, Cold Isostatic Press, Dry Press, Precision Machining Processing

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This material data has been provided by Innovacera.

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.