Forsterite Ceramics have relatively high thermal expansion allowing them to seal to certain glasses and metals. Forsterite has excellent electrical insulating properties, good mechanical strength and can function at safe operating temperatures up to 1000 C. Typical applications include but not limited to, radiation detection devices and other vacuum and hermetic seal type applications.
Mechanical, Electrical, Thermal and Physical Properties
| Material Grade | Forsterite |
| Physical Properties | |
| Water Absorption (%) | impervious:0.00 |
| Density (g/cc) | 2.8 |
| Color | Tan |
| Mechanical Properties | |
| Flexural Strength (1K PSI) | 20 |
| Compressive Strength (1K PSI) | 85 |
| Tensile Strength (1K PSI) | 9 |
| Hardness (Moh’s Scale) | 7.5 |
| Impact Resistance (Inch-Lbs.) | 5 |
| Electrical Properties | |
| Dielectric Strength (Volts/Mil) | 250 |
| Dielectric Constant (@1MHz) | 6.4 |
| Volume Resistivity 25 C (ohms-cm) | >1E14 |
| Loss Index (@1MHz) | 0.007 |
| Thermal Properties | |
| C.O.T.E. (20-650 C) | 9.9 x 10-6 |
| Safe Operating Temperature (C) | 1000 |
| Thermal Conductivity (W/m-C) | 3.8 |
| Note: This information is for design guidance only. Du-Co will not guarantee this information as absolute values. Various geometries can affect properties | |