Mullite Plate
Abstract:
Mullite plate, made of silicate ceramic(3Al2O3·2SiO2), shows advantages of low thermal expansion, good mechanical strength, and resilience at elevated temperatures. Supreme Ceramic Materials (SCM) supplies Mullite Plates with high quality and fast delivery, and customized products are also available.
Mullite Plate Description
Mullite plate is made of silicate ceramic. The main crystal phase of the mullite plate is 3Al2O3·2SiO2. It has 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.
Mullite Plate 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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