Mullite Rod
Abstract:
Mullite Rod, made of silicate ceramic mullite, is a refractory oxide material showing low thermal expansion, good mechanical strength, and resilience at elevated high temperatures. Supreme Ceramic Materials (SCM) supplies Mullite Rod with high quality and fast delivery, and customized products are also available.
Mullite Rod Description
Mullite rod is made of silicate ceramic mullite (3Al2O32SiO2). Mullite 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 Rod Specifications
|
Chemistry Content |
Al2O3 |
SiO2 |
TiO2 |
Fe2O3 |
CaO·MgO |
K2ONa2O, etc. |
|
62.50% |
34.50% |
0.10% |
0.80% |
0.90% |
1.30% |
|
|
Mechanical |
Units of Measure |
SI/Metric |
(Imperial) |
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|
Density |
gm/cc (lb/ft3) |
2.8 |
-175 |
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|
Porosity |
% (%) |
0 |
0 |
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|
Color |
– |
off-white |
off-white |
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|
Flexural Strength |
MPa (lb/in2x103) |
180 |
-26 |
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|
Elastic Modulus |
GPa (lb/in2x106) |
151 |
-22 |
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|
Shear Modulus |
GPa (lb/in2x106) |
– |
– |
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|
Bulk Modulus |
GPa (lb/in2x106) |
– |
– |
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|
Compressive Strength |
MPa (lb/in2x103) |
1310 |
-190 |
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|
Hardness |
Kg/mm2 |
1070 |
– |
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|
Fracture Toughness KIC |
MPa•m1/2 |
2 |
– |
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|
Maximum Use Temperature |
°C (°F) |
1650 |
-3000 |
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|
(no load) |
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Thermal |
|
|
|
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Thermal Conductivity |
W/m•°K (BTU•in/ft2•hr•°F) |
6 |
-42 |
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|
Coefficient of Thermal Expansion |
10–6/°C (10–6/°F) |
5.4 |
-3 |
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|
Electrical |
|
|
|
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|
Dielectric Strength |
ac-kv/mm (volts/mil) |
9.8 |
-245 |
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|
Dielectric Constant |
@ 1 MHz |
5.8 |
5.8 |
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|
Dissipation Factor |
@ 1 kHz |
0.003 |
0.003 |
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|
Volume Resistivity |
ohm•cm |
>1013 |
>1013 |
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