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Aluminium nitride – AIN

Aluminium nitride is known for its high thermal conductivity in combination with electrical insulation. The thermal conductivity generally lies between 140-180 W/mk. The material is dry pressed and sintered between 1400°C and 1600°C. After sintering, the material can be ground to achieve exact dimensions. Because of its unique characteristics, it requires a lot of expertise to produce parts with high tolerances.

 

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There are variations of aluminium nitride which can be machined with normal tools, the most known material is probably Shapa hi-m soft. The mechanical properties of this material is obviously different, and these variations have generally a lower thermal conductivity.

Aluminium nitride

Providing electrical insulation with high thermal conductivity.

Key characteristics
  • High thermal conductivity
  • Electrical insulation
  • High hardness
  • Good thermal shock resistance
  • High E-modulus
Applications
  • Heat sinks
  • Insulation plates
  • Core of a coil
  • Substrates
  • Molten metal fixtures
Yes, this is possible. We have substrate on stock which can be cut to any form by laser. The maximum dimensions are 100x150mm.
The material can be grinded into nearly any form, while the tolerances that can be achieved are similar to other ceramic materials.
Yes, this is possible with sharp tools. However, a lot of our clients prefer us to machine these parts for them. This prevents the powder from polluting their machinery and there is no need to learn something new.
No, aluminium nitride has no porosity
Electrical properties
Mechanical properties
Thermal properties
Temperature application
Properties Density g/cm3 Porosity % Mechanical properties Hardness (Vickers) kg/mm2 Compressive strength N/mm2 Bending strength N/mm2 E-modulus kN/mm2 Weibull modulus m Fracture toughness K1c Mpam Coefficient of friction Thermal properties
(Max. use temperature) *in air ℃ *in inert atm. ℃ Thermal shock resistance Expansion coefficient *20C - 200C *20C - 600C *20C - 1000C Thermal conductivity at 20C W/mK Electrical properties (Resistivity) * at 20C ohm cm * at 400C ohm cm * at 1000C ohm cm
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