Steatite Ceramic - Crystalline Magnesium Silicate
What We Do
Physical Properties Of Associated Ceramics Steatite
Steatite is a crystalline form of magnesium silicate. It is a low loss, low cost, relatively good strength insulating material which can function safely at temperatures up to 2,000°F. Applications include high frequency insulation, resistor cores and casings, and appliance insulators.
Table converts to a left/right scrolling table when viewed on mobile devices or smaller screens.| ACT Material Code > | AC-ST300 | AC-ST500 | |
|---|---|---|---|
| Description > | Steatite
|
||
| L3 | L5 | ||
| Color | - | Cream | Cream |
| Density | g/cc | 2.5-2.6 | 2.7-2.8 |
| Porosity | % | 0-1 | 0-1 |
| Flexural Strength |
psi (MPa) | 18,000 (124) | 22,000 (152) |
| Compressive Strength |
psi (Mpa) | 80,000 (552) | 90,000 (620) |
| Tensile Strength |
psi (MPa) | 8,400 (60) | 10,000 (70) |
| Elastic Modulus |
psi x 106 (GPa) | 15 (103) | 16 (110) |
| Fracture Toughness |
MPa/m | 1.5-2.5 | 1.5-2.5 |
| Dielectric Strength |
Volts/mil | 225 | 230 |
| Dielectric Loss Tangent |
@ 1 MHz | 0.026 | 0.006 |
| Thermal Conductivity |
W/m°K | 3.2 | 3.4 |
| Coefficient Of Thermal Expansion |
1 x 10-6/°C | 8.1 | 8.5 |
| Safe Use Temperature |
°F °C |
2200 1200 |
2200 1200 |
