Cordierite

Its good thermal shock properties lend this material to be used in refractory applications. Its low thermal expansion and thermal conductivity make it a good choice for fixtures and other applications.

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Property Charts & Safety Data Sheets
Property Charts Cordierite
Master Ceramics Property Chart Full Color
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Safety Data Sheets Cordierite Ceramic (Refractory Grade)
Unfired Cordierite

Materials Property Chart
  Silicates
  Property ASTM Method Units Cordierite
General Color -- -- Orange-Tan
Gas Permeability -- atms-cc/sec Porous
Water Absorption C 20-97 % 10
Mechanical Density C 20-97 g/cc 2.00
Hardness Vickers 500gm GPa (kg/mm2) 5.8 (590)
Hardness -- R45N 50
Flexural Strength (MOR)
(3 point) @ RT
F417-87 MPa (psi x 103 66 (9.5)
Tensile Strength @ RT -- MPa (psi x 103) 19 (2.7)
Compressive Strength @ RT -- MPa (psi x 103) 165 (24)
Elastic Modulus C848 GPa (psi x 106) 103 (15)
Poisson's Ratio C848 -- 0.31
Thermal C.T.E. 25 - 100° C C 372-96 x 10-6/C 2.1
C.T.E. 25 - 300° C C 372-96 x 10-6/C 2.5
C.T.E. 25 - 600° C C 372-96 x 10-6/C 3.0
Thermal Conductivity @ RT C 408 W/m K 3
Max Use Temp -- Farenheit (°F) 2350
-- Celsius (°C) 1290
 Electrical Dielectric Strength (.125" Thick) D 149-97A V/mil 120
Dielectric Constant @ 1 MHz D 150-98 -- 5.5
Volume Resistivity, 25°C D 257 ohms-cm > 1 x 1014
Note: The information in this data sheet is for design guidance only. STC does not warrant this data as absolute values. Forming methods and specific geometry could affect properties. Slight adjustments can be made to some of the properties to accommodate specific customer requirements. Most of the dense materials in the table are resistant to mechanical erosion and chemical attack. STC has performed ASTM testing qualification for certain compositions, in accordance with ASTM D2442. Please consult our technical staff for appropriate material and specific test results.