Description of Mullite Ceramic Rods
Mullite Ceramic Rods are cylindrical components manufactured from mullite, a silicate mineral composed of aluminium oxide and silicon dioxide (3Al2O3-2SiO2). These rods are employed in various industrial and technological applications because mullite demonstrates high thermal stability, excellent resistance to temperature cycling, low thermal expansion, high mechanical strength and chemical inertness.
Specifications of Mullite Ceramic Rods
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 of Measure
|
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)
|
-
|
-
|
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 Service 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
|
>10^13
|
>10^13
|
Applications of Mullite Ceramic Rods
- Machining of components and tools
- Protective tubes
- Prototype fabrication
- Production of small ceramic batches
- Cores for coils
- Electrical insulator
- Assembly template
- Injectors, nozzles
- Vacuum components
- Thermal insulators, inductive insulators
- Templates for soldering and welding
- Sensors
Packaging of Mullite Ceramic Rods
Our Mullite Ceramic Rods are managed with care during storage and transport in order to maintain the product in its original condition.