(802) 527-7726


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.

Download the following chart here.

PropertyASTM MethodUnitsCordierite
Gas Permeability--porous
DensityC 20-97g/cc2.00
Hardness-Mohs Scale6
Water AbsorptionC 20-97%10
Flexural StrengthF417-87psi9,500
Tensile Strength-psi2,700
Compressive Strength-psi24,000
Elastic ModulusC848psi x106n/a
Shear ModulusC848psi x106n/a
Poisson's RatioC848nonen/a
C.T.E., 25 - 100°CC372-96x10-6/°C2.1
C.T.E., 25 - 300°C--2.5
C.T.E., 25 - 600°C--3.0
Thermal Conductivity, 25°CC408W/m-K3
Max Use Temperature (Non-Loading)-°F2350
Max Use Temperature (Non-Loading)-°C1290
Dielectric Strength (.125" Thick)D149-97AV/mil120
Dielectric Constant @ 1MHzD150-98-6.3

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 specifc test results.

Note: In addition to the above compositions, STC offers a wide range of alternative materials. Please contact one of our applications engineers for material requirements that may not be shown above.


Download the chart as shown above.