Cordierite vs. Steatite
Both cordierite and steatite are oxide-based engineering ceramics. There are 19 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.
For each property being compared, the top bar is cordierite and the bottom bar is steatite.
Metric UnitsUS Customary Units
Mechanical Properties
| Compressive (Crushing) Strength, MPa | 420 | |
| 540 to 620 |
| Elastic (Young's, Tensile) Modulus, GPa | 62 | |
| 68 to 120 |
| Flexural Strength, MPa | 17 to 32 | |
| 32 to 150 |
| Tensile Strength: Ultimate (UTS), MPa | 190 | |
| 60 to 220 |
Thermal Properties
| Maximum Temperature: Mechanical, °C | 1150 | |
| 750 to 1230 |
| Maximum Thermal Shock, °C | 290 to 390 | |
| 90 to 160 |
| Specific Heat Capacity, J/kg-K | 800 to 850 | |
| 850 to 860 |
| Thermal Conductivity, W/m-K | 1.3 to 1.7 | |
| 1.8 to 2.5 |
| Thermal Expansion, µm/m-K | 2.9 to 4.8 | |
| 7.0 to 9.0 |
Electrical Properties
| Dielectric Constant (Relative Permittivity) At 1 MHz | 4.7 | |
| 5.7 to 6.5 |
| Dielectric Strength (Breakdown Potential), kV/mm | 7.7 | |
| 7.9 to 16 |
| Electrical Resistivity Order of Magnitude, 10x Ω-m | 9.5 | |
| 8.0 to 11 |
Otherwise Unclassified Properties
| Density, g/cm3 | 2.0 to 2.2 | |
| 1.9 to 2.8 |
Common Calculations
| Stiffness to Weight: Axial, points | 15 to 17 | |
| 14 to 32 |
| Stiffness to Weight: Bending, points | 59 to 67 | |
| 52 to 83 |
| Strength to Weight: Axial, points | 24 to 27 | |
| 6.4 to 32 |
| Strength to Weight: Bending, points | 33 to 38 | |
| 13 to 42 |
| Thermal Diffusivity, mm2/s | 0.74 to 1.0 | |
| 0.79 to 1.1 |
| Thermal Shock Resistance, points | 47 to 78 | |
| 5.1 to 33 |