Mullite Ceramic (3Al2O32SiO2)
Mullite (3Al2O32SiO2) is an alumino silicate ceramic combining low thermal expansion, good mechanical strength, and good high-temperature stability. Mullite ceramic is used extensively in the steel and glass industries. It is also used as a lower cost alternative to alumina, with slightly better thermal shock properties.
The advantages of mullite ceramic:
– Good thermal shock properties
– Low thermal conductivity
– Good wear resistance and resistance to creep
The application of mullite ceramic:
Typical applications include kiln furniture, furnace center tube, heat exchange parts, heat insulation parts, rollers and other customized parts.
Properties of mullite material:
|
Property |
Unit |
Mullite |
|
Density |
g/cm3 |
3 |
|
Water Absorption |
% |
0 |
|
Sintering Temperature |
°C |
1300 |
|
Hardness |
HV |
4-5 |
|
Bending Strength |
MPa |
80 |
|
Compressive Strength |
MPa |
600 |
|
Max Working Temperature |
°C |
1,000 |
|
Co-efficient of Thermal Expansion 0-1000°C |
/°C |
6×10-6 |
|
Thermal Shock Resistance |
T(°C) |
200 |
|
Thermal Conductivity |
W/m.k (25°C,300°C) |
3.5 |
|
Volume Resistivity 20°C |
Ω.cm |
>1012 |
|
Dielectric Strength |
KV/mm |
10 |
|
Dielectric Constant (100 Mhz) |
(E) |
5 |
Contact: Lu Junliu
Phone: +86-18668805505
Tel: +86-574-86158627
Email: info@nbvic.com
Add: No.177, Xiaowen Street, Haishu, Ningbo, China
