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MC2248 Mullite Heating Protection Tube, Silicate Ceramic Protection Tube

  • Catalog No. MC2248
  • Color Off-white
  • Shape Heating Protection Tube
  • Thermal Conductivity 6 W/m·K
  • Dielectric Strength 9.8 ac-kv/mm

Mullite Heating Protection Tube Description

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 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.

Advanced Ceramic Materials (ACM) is a trusted supplier of mullite ceramic products.

Mullite 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 Conductivity W/m•°K (BTU•in/ft2•hr•°F) 6 -42
Coefficient of Thermal Expansion 10–6/°C (10–6/°F) 5.4 -3
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 Heating Protection Tube Applications

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

Related Documents
Advanced Ceramic Materials Brochure
Technical brochure for Advanced Ceramic Materials, all grades. Revision March 2023.
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