Description of Mullite Ceramic Plates
Mullite Ceramic Plates are flat components produced from mullite, a silicate mineral comprising aluminium oxide and silicon dioxide (3Al2O3-2SiO2). This ceramic material exhibits high thermal stability, low thermal expansion and considerable mechanical strength. It also resists thermal shock and chemical corrosion, thereby justifying its use in high‐temperature environments.
Specifications of Mullite Ceramic Plates
Chemical Composition
|
Al2O3
|
SiO2
|
TiO2
|
Fe2O3
|
CaO-MgO
|
K2ONa2O and others
|
62.50%
|
34.50%
|
0.10%
|
0.80%
|
0.90%
|
1.30%
|
Mechanical
|
Units
|
SI/metric
|
(imperial)
|
Density
|
gm/cc (lb/ft3)
|
2.8
|
-175
|
Porosity
|
% (%)
|
0
|
0
|
Colour
|
-
|
cream‑coloured
|
broken‑white
|
Flexural Strength
|
MPa (lb/in2x103)
|
180
|
-26
|
Elastic Modulus
|
GPa (lb/in2x106)
|
151
|
-22
|
Shear Modulus
|
GPa (lb/in2x106)
|
-
|
-
|
Modulus of Elasticity
|
GPa (lb/in2x106)
|
-
|
-
|
Compressive Strength
|
MPa (lb/in2x103)
|
1 310
|
-190
|
Hardness
|
Kg/mm2
|
1 070
|
-
|
Fracture Toughness KIC
|
MPa-m1/2
|
2
|
-
|
Maximum Operating Temperature
|
°C (°F)
|
1 650
|
-3 000
|
(unloaded)
|
Thermal
|
|
|
|
Thermal Conductivity
|
W/m‑°K (BTU‑in/ft2‑hr‑°F)
|
6
|
-42
|
Coefficient of Thermal Expansion
|
10-6/°C(10-6/°F)
|
5.4
|
-3
|
Electrical
|
|
|
|
Dielectric Strength
|
ac‑kv/mm (Volt/Mil)
|
9.8
|
-245
|
Dielectric Constant
|
at 1 MHz
|
5.8
|
5.8
|
Dissipation Factor
|
at 1 kHz
|
0.003
|
0.003
|
Volume Resistivity
|
Ohm‑cm
|
>1 013
|
>1 013
|
Applications of Mullite Ceramic Plates
- Machining of components and tools
- Protective tubes
- Production of prototypes
- Manufacture of small ceramic series
- Cores for coils
- Electrical insulator
- Template for assembly
- Injectors, nozzles
- Vacuum components
- Thermal insulators, inductive insulators
- Templates for soldering and welding
- Sensors
Packaging of Mullite Ceramic Plates
Our Mullite Ceramic Plates are handled with care during storage and transport to preserve the quality of the product in its original condition.