Self-Glazing Cordierite Ceramics have excellent thermal shock properties. Our cordierite products are low-cost materials having good mechanical strength, good electrical insulating properties, good wear resistance and can function at safe operating temperatures of 1100-1300℃. Typical applications include, but are not limited to, electric heating elements, igniters, resistors, standoffs, band heaters, thermocouple cores, load banks, ovens, furnaces, connectors, and spacers.
Mechanical, Electrical, Thermal and Physical Properties
| Material Grade | Self-Glazing Cordierite |
| Physical Properties | |
| Water Absorption (%) | impervious: 0.00-0.00 |
| Density (g/cc) | 2.00-2.20 |
| Color | Off-White |
| Mechanical Properties | |
| Flexural Strength (MPa) | 15-32 |
| Compressive Strength (MPa) | 165-420 |
| Tensile Strength (MPa) | 19-45 |
| Hardness (Moh’s Scale) | 7-7.5 |
| Impact Resistance (kJ/m 2 ) | 1.5-2.5 |
| Electrical Properties | |
| Dielectric Strength (Volts/Mil) | 120-200 |
| Dielectric Constant (@1MHz) | 4.7-5.5 |
| Volume Resistivity 25 C (ohms-cm) | >1E14 |
| Loss Index (@1MHz) | 0.005-0.025 |
| Thermal Properties | |
| C.O.T.E. (20-650 C) | 2.0-3.0 x 10-6 |
| Safe Operating Temperature (C) | 1100-1300 |
| Thermal Conductivity (W/m-C) | 1.3-3.0 |
| Note: This information is for design guidance only. Du-Co will not guarantee this information as absolute values. Various geometries can affect properties | |