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Mullite Ceramic Rods

Mullite ceramic 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. Mullite ceramic rod’s work ability allows an extensive range and flexibility in fabrication.

Product Features:

1). low thermal expansion
2). large specific heat capacity
3). high specific surface area
4). low pressure drop
5). small thermal resistance
6). good thermal conductivity
7). good heat-shock resisting ability

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:

Mullite ceramic rods have a wide variety of 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

Our mullite ceramic rods 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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