Ferro-Ceramic Grinding Inc. machines over 15 different materials
Steatite L-5
Steatite L-5 Properties
This material has applications where insulating and temperature resistance are a concern. Many insulators and other standoffs.
Steatite L-5 Properties
This material has applications where insulating and temperature resistance are a concern. Many insulators and other standoffs are made of Steatite. The cost of this material is relatively low when compared with other ceramic materials.
| Properties | Units | Test | Value |
|---|---|---|---|
| Physical | |||
| Chemical Formula | - | - | H2Mg3(SiO3)4 |
| Density, r | g/cm3 | ASTM C20 | 2.71 |
| Color | - | - | buff |
| Crystal Structure | - | - | hexagonal |
| Water Absorption | % @R.T. | ASTM C373 | 0.0 - 0.02 |
| Hardness | Moh's | - | 7.5 |
| Hardness | knoop (kg/mm2) | Knoop 100g | - |
| Mechanical | |||
| Compressive Strength | MPa @ R.T. | ASTM C773 | 621 |
| Tensile Strength | MPa @ R.T. | ACMA Test #4 | 62 |
| Modulus of Elasticity (Young's Mod.) | GPa | ASTM C848 | 138 |
| Flexural Strength (MOR) | MPa @ R.T. | ASTM F417 | 140 |
| Poisson's Ratio, u | ASTM C818 | - | |
| Fracture Toughness, KIc | MPa x m1/2 | Notched Beam Test | - |
| Thermal | |||
| Max. Use Temperature (* denotes inert atm.) | ºC | No load cond. | 1425 |
| Thermal Shock Resistance | DT (ºC) | Quenching | 190 |
| Thermal Conductivity | W/m-K @ R.T. | ASTM C408 | 2.9 |
| Coefficient of Linear Thermal Expansion, al | mm/m-ºC (~25ºC through ±1000ºC) | ASTM C372 | 7.0 |
| Specific Heat, cp | cal/g-ºC @ R.T. | ASTM C351 | 0.22 |
| Electrical | |||
| Dielectric Constant | 1MHz @ R.T. | ASTM D150 | 6.3 |
| Dielectric Strength | kV/mm | ASTM D116 | 9.3 |
| Electrical Resistivity | Wcm @ R.T. | ASTM D1829 | 104 |