IEC 60672 Type C-512 Cordierite Refractory
C-512 cordierite refractory is a grade of cordierite. The graph bars on the material properties cards below compare C-512 cordierite refractory to other oxide-based engineering ceramics (top) and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.
Mechanical Properties
Compressive (Crushing) Strength
420 MPa 61 x 103 psi
Elastic (Young's, Tensile) Modulus
62 GPa 8.9 x 106 psi
Flexural Strength
17 MPa 2.4 x 103 psi
Fracture Toughness
2.0 MPa-m1/2 1.8 x 103 psi-in1/2
Tensile Strength: Ultimate (UTS)
190 MPa 28 x 103 psi
Thermal Properties
Maximum Temperature: Mechanical
1150 °C 2100 °F
Maximum Thermal Shock
290 °C 550 °F
Specific Heat Capacity
830 J/kg-K 0.2 BTU/lb-°F
Thermal Conductivity
1.3 W/m-K 0.72 BTU/h-ft-°F
Thermal Expansion
4.3 µm/m-K
Other Material Properties
Density
2.1 g/cm3 130 lb/ft3
Dielectric Constant (Relative Permittivity) At 1 MHz
4.7
Dielectric Strength (Breakdown Potential)
7.7 kV/mm 0.3 V/mil
Electrical Resistivity Order of Magnitude
9.5 10x Ω-m
Common Calculations
Stiffness to Weight: Axial
17 points
Stiffness to Weight: Bending
64 points
Strength to Weight: Axial
26 points
Strength to Weight: Bending
36 points
Thermal Diffusivity
0.74 mm2/s
Thermal Shock Resistance
52 points
Followup Questions
Further Reading
IEC 60672-3: Ceramic and glass-insulating materials - Part 3: Specifications for individual materials
Springer Handbook of Condensed Matter and Materials Data, W. Martienssen and H. Warlimont (editors), 2005