Aluminum nitride is a non-oxide engineering ceramic material.
It has five common variants, each represented as a separate material. The Material Properties section below shows ranges encompassing all variants. For more specific values, follow the links in the Variant Materials section.
Compressive (Crushing) Strength2100 MPa (300 x 103 psi)
Density2.9 to 3.3 g/cm3 (180 to 210 lb/ft3)
Dielectric Constant (Relative Permittivity) At 1 MHz6.9 to 28
Dielectric Strength (Breakdown Potential)15 to 56 kV/mm (0.59 to 2.2 V/mil)
Elastic (Young's, Tensile) Modulus330 GPa (48 x 106 psi)
Electrical Dissipation At 1 Hz0.0019
Electrical Dissipation At 1 MHz0.00020 to 0.00090
Electrical Resistivity Order of Magnitude10 to 12 10x Ω-m
Flexural Strength190 to 400 MPa (28 to 58 x 103 psi)
Fracture Toughness2.9 MPa-m1/2
Maximum Thermal Shock230 °C (450 °F)
Poisson's Ratio0.21 to 0.31
Specific Heat Capacity780 J/kg-K
Thermal Conductivity80 to 200 W/m-K
Thermal Diffusivity31 to 35 m2/s
Thermal Expansion4.2 to 5.4 µm/m-K
The length of each bar compares the given value to the highest value in the database.
Handbook of Refractory Carbides and Nitrides: Properties, Characteristics, Processing and Applications, Hugh O. Pierson, 1996
IEC 60672-3: Ceramic and glass-insulating materials - Part 3: Specifications for individual materials