Cordierite Ceramic Magnesium Aluminum Silicate

Physical Properties Of Associated Ceramics 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. Cordierite is 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.

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ACT Material
Code >
  AC-C200 AC-C201 AC-C105
Description >  
Cordierite
    Standard High Temp Self-Glazing
Color - Cream White/Ivory Gray/Brown
Density g/cc 2.0-2.1 2.2-2.3 2.2-2.4
Porosity % 20-25
10-15 0-5
Flexural
Strength
psi (MPa) 13,500 (93) 15,000 (103) 17,000 (117)
Compressive
Strength
psi (Mpa) 40,000 (276) 50,000 (345) 60,000 (414)
Tensile
Strength
psi (MPa) - - -
Elastic
Modulus
psi x 106 (GPa)      
Fracture
Toughness
MPa/m 1-2 1-2 1-2
Dielectric
Strength
Volts/mil 180
180 250
Dielectric
Loss Tangent
@ 1 MHz      
Thermal
Conductivity
W/m°K 2.0 3.0 3.0
Coefficient
Of Thermal
Expansion
cm/cm/°C
(RT to 700°C)
2-Jan 3 4
Safe Use
Temperature
°F
°C
2100 1150 2400 1315 2000 1100

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