Description of Mullite Ceramic Rod
Mullite Ceramic Rod is a cylindrical-shaped component made from mullite, which is a silicate mineral comprised of aluminum oxide and silicon dioxide (3Al2O3·2SiO2). These rods are highly valued in various industrial and technological applications due to mullite's exceptional physical and chemical properties. Specifically, mullite offers high thermal stability, excellent resistance to thermal shock, low thermal expansion, substantial mechanical strength, and chemical inertness.
Specifications of Mullite Ceramic Rod
|
Chemistry content
|
|
Al2O3
|
SiO2
|
TiO2
|
Fe2O3
|
CaO·MgO
|
K2ONa2O 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
|
|
Color
|
-
|
off-white
|
off-white
|
|
Flexural Strength
|
MPa (lb/in2x103)
|
180
|
-26
|
|
Elastic Modulus
|
GPa (lb/in2x106)
|
151
|
-22
|
|
Shear Modulus
|
GPa (lb/in2x106)
|
-
|
-
|
|
Bulk Modulus
|
GPa (lb/in2x106)
|
-
|
-
|
|
Compressive Strength
|
MPa (lb/in2x103)
|
1310
|
-190
|
|
Hardness
|
Kg/mm2
|
1070
|
-
|
|
Fracture Toughness KIC
|
MPa•m1/2
|
2
|
-
|
|
Maximum Use Temperature
|
°C (°F)
|
1650
|
-3000
|
|
(no 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
|
|
Dielectric Strength
|
ac-kv/mm (volts/mil)
|
9.8
|
-245
|
|
Dielectric Constant
|
@ 1 MHz
|
5.8
|
5.8
|
|
Dissipation Factor
|
@ 1 kHz
|
0.003
|
0.003
|
|
Volume Resistivity
|
ohm•cm
|
>1013
|
>1013
|
Applications of Mullite Ceramic Rod
1. High-Temperature Insulation: Due to their excellent thermal stability, mullite rods are used in furnace linings, kiln furniture, and other high-temperature insulation components.
2. Thermocouples: Mullite rods are commonly used as protective tubes for thermocouples, especially in high-temperature environments, because of their good thermal shock resistance and low reactivity with molten metals.
3. Mechanical Components: Due to their high strength and hardness, mullite rods are used in mechanical components such as bushings, spacers, and wear-resistant parts in various industrial machinery.
4. Aerospace Applications: In aerospace engineering, mullite rods are used in thermal protection systems and as structural components in high-temperature environments.
5. Chemical Industry: Mullite rods are employed in chemical processing equipment due to their resistance to corrosion and chemical attack, particularly in acidic and alkaline environments.
6. Electrical Insulation: The good electrical insulating properties of mullite make these rods suitable for use in electrical insulators and components in high-voltage applications.
7. Casting Molds: Mullite is used in the casting industry for making molds, particularly in the investment casting process, due to its ability to withstand high temperatures without deforming.
Mullite Ceramic Rod Packing
Our Mullite Ceramic Rod is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
