Mullit Ceramic Tube Description
The Mullit ceramic tube is a cylindrical component made of Mullite (3Al2O3-2SiO2), a silicate mineral composed of aluminium, silicon and oxygen. This material is used in various high-temperature applications because it has high thermal shock resistance, good mechanical strength, stability in high-temperature environments and low thermal expansion.
Specifications for Mullit Ceramic Tubes
Chemical Composition
|
Al2O3
|
SiO2
|
TiO2
|
Fe2O3
|
CaO-MgO
|
K2O Na2O 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
|
off-white
|
Flexural Strength
|
MPa (lb/in2x10³)
|
180
|
-26
|
Elastic Modulus
|
GPa (lb/in2x10⁶)
|
151
|
-22
|
Shear Modulus
|
GPa (lb/in2x10⁶)
|
-
|
-
|
Elasticity Modulus
|
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
|
(without load)
|
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
|
|
|
|
Breakdown 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
|
>1013
|
>1013
|
Applications for the Mullit Ceramic Tube
- Machining of components and tools
- Protective tubes
- Fabrication of prototypes
- Production of small ceramic series
- Cores for coils
- Electrical insulator
- Jigs for assembly
- Injectors, nozzles
- Vacuum components
- Thermal insulators, inductive insulators
- Jigs for soldering and welding
- Sensors
Packaging of the Mullit Ceramic Tube
Our Mullit ceramic tube is carefully handled during storage and transportation to maintain the product’s quality in its original state.