SiAlON Ceramics

SiAlON, Silicon Aluminum Oxynitride, is an exceptional material for high-temperature applications that are subject to thermal shock. SiAlON Ceramics are an outstanding choice for extreme structural applications with high-temperature exposure.


  • Semiconductor Equipment Parts
  • General Industry Machinery Parts
  • Heat Resistant Parts
  • Abrasion Resistant Parts

Silicon Nitride Ceramics


General Properties Main Component Purity (wt%) 90
Color Gray
Density (g/cm3) 3.2
Water Absorption (%) 0
Mechanical Properties Bending Strength (MPa) 880
Young's Modulus (GPa) 290
Vickers Hardness (GPa) 12
Thermal Properties Max.Operating Temperature (°C) 1300
Coefficient of Thermal Expansion (1/°C×10-6) RT~500°C 2.4
RT~800°C 2.9
Coefficient of Thermal Conductivity (W/m×K) 27
Thermal Shock Resistance ΔT (°C) 800
Electrical Properties Volume Resistivity 25°C 1015
300°C -
500°C -
800°C -
Dielectric Constant 10GHz 8
Dielectric Loss (×10-4) 14
Q Factor (×104) 0.7
Dielectric Breakdown Voltage (KV/mm) 15