Machining Examples

Aluminum Nitride (AlN) – Custom Machined Parts

Aluminum Nitride is stable at very high temperatures in inert atmospheres. Also, it is the only technical ceramic material that offers high thermal conductivity and good electrical insulation.

Aluminum Nitride Properties

Property(Unit) Vickers Hardness
Fracture Toughness
Max Use Temperatur(℃) Coefficient of Thermal Expansion(×10-⁶/℃) Thermal Conductivity
Thermal Shock Resistance(℃) Dielectric Strength(kv/mm) Chemical Resistance
Chemical Formula & Purity
AlN 13 3 1,500
(in a nitrogen atmosphere)
2.4 160(20℃) 400 >15 Good (It corrodes in alkaline conditions and water.)

For more information, see Material Guide

Aluminum Nitride – Key Properties & Popular Applicatio

Key Properties Applications
■High thermal stability
■Low thermal expansion
■High thermal conductivity
■High thermal shock resistance
High thermal conductivity makes AlN ideal for applications where fast and uniform thermal response is required. It is often used for electronics applications due to its excellent heat dissipation properties.Also, the high thermal conductivity coupled with low thermal expansion make AlN an excellent thermal shock resistant material which withstands rapid heating and cooling. ■Heat sinks & heat spreaders
■Semiconductor heaters
■Substrate material for high power, electronic devices
■Heat transfer components used at high temperatures
Good Chemical Resistance AlN is highly resistant to corrosion especially to halogen gas plasma.
However, it reacts with water and alkaline water to produce ammonia gas.
■Components exposed to semiconductor process chemicals and gases at high temperatures
■Plasma-exposed components

Available Sizes and Machining Capability

Availability Sizes(mm) Machining Capability Sizes(mm)
Plate Φ350×30 Hole diameter Φ0.03 or more
Rod Φ20×200 Hole depth 300 or less
Groove width 0.05 or more Max. hole number 3,000 (approx.)
Max. step height 30 Thread size M2 or more

Ceramics List

  • Alumina(Al₂O₃)

    Excellent electrical insulation properties , High temperature resistance , Plasma resistance , High hardness , Wear resistance

  • Aluminum nitride(AlN)

    High thermal conductivity , High temperature resistance , Low thermal expansion , Excellent electrical insulation properties , Plasma resistant , Corrosion resistant

  • Zirconia(ZrO2)

    High fracture toughness , Low thermal conductivity , Wear resistant

  • Silicon carbide(SiC)

    High hardness , High thermal conductivity , High mechanical strength , Corrosion resistant

  • Silicon Nitride (Si3N4)

    High fracture toughness , Low thermal expansion , Wear resistant , Good thermal shock resistance

  • Machinable Ceramics

    Excellent electrical insulation properties , High machinability , High temperature resistance

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