Mullite Ceramic Heating Protection Tube Description
Mullite (3Al2O3·2SiO2) is a refractory oxide material combining low thermal expansion, good mechanical strength, and resilience at elevated temperatures. Raw mullite materials are easily obtained and are reasonably priced. It is certainly one of the most important oxide materials for both conventional and advanced ceramics. Its workability allows an extensive range and flexibility in fabrication. It is well suited for the casting of special shapes and larger tubes.
Mullite Ceramic Heating Protection Tube Specifications
|
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
|
Mullite Ceramic Heating Protection Tube Applications
- Machining of components and toolings
- Protection tubes
- Realization of prototypes
- Manufacturing of small ceramic series
- Coil cores
- Electrical insulator
- Template of assembly
- Injectors, nozzles
- Vacuum parts
- Thermal insulators, inductive insulators
- Template of brazing and welding
- Sensors
Mullite Ceramic Heating Protection Tube Packing
Our Mullite Ceramic Heating Protection Tube is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
