HENAN ZG INDUSTRIAL PRODUCTS CO.,LTD

Alumina ceramic is a type of wear-resistant technical ceramic that provides excellent mechanical and electrical performance. Alumina ceramic features high hardness, wear resistance, low erosion, high temperature resistance, corrosion resistance, and biocompatibility. It is often made into valve seats, semiconductor device parts, insulators, etc. Junjie provides various types of alumina microporous ceramic suction cups, wafer handling arms, and semiconductor equipment components for the semiconductor industry.

Material properties


95Alumina 99Alumina 997Alumina 998Alumina
Color White Beige Beige Beige
Mechanical properties



Density(g/cm²) 3.7 3.9 3.9 3.9
Compressive strength(MPa) 2500 2450 2500 2600
Tensile strength / / 150 /
Flexural strength(MPa) 380 310 400 /
Fracture toughness(MPam) 3 3.5 3.5 /
Vickers hardness(GPa) 13.7 15.2 17.2 18
Young's modulus(Pa) 300 350 370 360
Poisson's ratio 0.23 0.23 0.23 0.23
Thermal properties



Thermal conductivity@25℃ 2Ω 2Ω 3Ω 3Ω
Thermal expansion@25-300℃(*10) 7.2 7.2 6.5 7.2
Thermal expansion@25-700℃(*10) 7.9 7.9 7.5 8.0
Electrical performance



Dielectric constant@25℃(1MHz) 9.0 9.2 9.9 9.7
Dielectric strength 50 20 285 14
Dielectric loss 2.6 2 0.0001 1
Volume resistivity@ 25℃(Ωcm) 10*14 10*14 10*14 10*14
Volume resistivity@ 500℃(Ωcm) / / 2*10*10 /
Volume resistivity@ 1000℃(Ωcm) / / 2*10*4 /