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| Catalog No. | MC2248 |
|---|---|
| Color | Off-white |
| Shape | Heating Protection Tube |
| Thermal Conductivity | 6 W/mo°K |
| Dielectric Strength | 9.8 ac-kv/mm |
Mullite heating protection tube is made of silicate ceramic mullite. Mullite is a refractory oxide material combining low thermal expansion, good mechanical strength, and resilience at elevated high 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 China Special Ceramic Parts. Its workability allows an extensive range and flexibility in fabrication. It is well suited for the casting of special shapes and larger tubes.
China Special Ceramic Parts, Inc. (CSCPI) is a trusted supplier of mullite ceramic products.
| 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 | MPaom1/2 | 2 | – |
| Maximum Use Temperature | °C (°F) | 1650 | -3000 |
| (no load) | |||
| Thermal | |||
| Thermal Conductivity | W/mo°K (BTUoin/ft2ohro°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 | ohmocm | >1013 | >1013 |
Mullite heating protection tubes have the following 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
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