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Mullite Ceramic Tubes

Mullite ceramic tubes is made of 60% Al2O3 +38% SiO2 material. Mullite ceramic tubes can be used up to temperatures to 1500ºC in both oxidizing and reduce atmospheres, which has better thermo conductivity and provides better temperature uniformity compared with quartz tubes, it has strong thermal shock stability and long working life.

Product Features:

1) Great mechanical strength
2) High softening temperature
3) Good resistance to thermal impact
4) Small thermal expansion coefficient
5) Good chill and abrupt heat properties
6) Resistance to acid and alkali corrosion

Product Parameters:

Properties Units Value
Density, r g/cm3 2.80
Color tan
Water Absorption % @R.T. 0.0
Hardness Moh’s 8
Hardness knoop (kg/mm2) 1450
Compressive Strength MPa @ R.T. 551
Tensile Strength MPa @ R.T. 103.5
Modulus of Elasticity
(Young’s Mod.)
GPa 150
Flexural Strength (MOR) MPa @ R.T. 170
Fracture Toughness, KIc MPa x m1/2 2.0
Max. Use Temperature
(* denotes inert atm.)
ºC 1700
Thermal Shock Resistance DT (ºC) 300
Thermal Conductivity W/m-K @ R.T. 3.5
Coefficient of Linear Thermal Expansion, al mm/m-ºC (~25ºC through ±1000ºC) 5.3
Specific Heat, cp cal/g-ºC @ R.T. 0.23
Dielectric Constant 1MHz @ R.T. 6.0
Dielectric Strength kV/mm 9.8
Electrical Resistivity Wcm @ R.T. 1013

Application and After-Sales Service:

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

Our mullite ceramic tubes are exported to USA, Canada, Europe, and South America and Southeast Asia.

After-sales service:

Accept any repair of the product, help to improve technology for customer. And also provide long-term technical help and support for you.


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