Cordierite

Cordierite is a magnesium aluminum silicate which possesses an extremely low thermal expansion and low thermal conductivity. Cordierite is used when thermal shock is a concern in the finished product. Available in self-glazing form where higher strength, thermal shock, and dielectric strength is required. Applications include refractory shapes, welding tapes, heaters, thermocouples, and appliance insulators.

Cordierite Properties
Units
ACT 200
Material
 
Cordierite & Self-Glazing Cordierite
General Application
 
Appliance Insulators, Refractories, Kiln Furniture & High Thermal Shock Applications
Color (Fired)
 
Tan
Porosity
%
0-.15
Density
gm/cm3
2.5-2.6
Flexural Strength
psi
15,000-20,000
Comprehensive Strength
psi
30,000-50,000
Tensile Strength
psi
-
Linear Coefficient of Thermal Expansion
(cm/cm/°C)
25-300°C
25-700°C
3.0 X 10-6
3.5 X 10-6
Dielecctric Constant at 25°C
1 MH
10 MH
4.0
5.0
Dielectric Strength
Volt/mil
180
Te Value
°F
°C
750
400
Thermal Conductivity at 25°C
cal/sec/cm2/cm/°C
0.004
Thermal Shock
 
Excellent
Safe Use
Temperature
°F
°C
2200
1200

Above values are test specimen results and actual shapes may vary in value.
We can work with other formulations as well.

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