MC2251 Mullite Tube, Silicate Ceramic Tube

Catalog No.	MC2251
Color	Off-white
Shape	Heater Plate
Thermal Conductivity	6 W/mo°K
Dielectric Strength	9.8 ac-kv/mm

Mullite Tube Description

Mullite tube is made of silicate ceramic mullite. The main crystal phase of mullite tube 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 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 tubes.

Mullite Tube Specifications

Chemistry Content of Mullite Tube
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)	°C (°F)	1650	-3000
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 Tube Applications

Mullite ceramic tubes 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