Mullite Ceramic Rod Supplier

Description of Mullite Ceramic Rod

Mullite (3Al2O3·2SiO2) 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. Its workability allows an extensive range and flexibility in fabrication. It is well suited for the casting of special shapes and larger tubes.

 

Specifications of Mullite Ceramic Rod

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

　

　

　

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

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

ohm•cm

>1013

>1013

 

Applications of Mullite Ceramic Rod

- 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