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
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Tel: +86-574-86158627
Email: info@nbvic.com
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