Ferro-Ceramic Grinding Inc. machines over 15 different materials
Alumina 96% Properties
Alumina 96% Alumina represents one of the most commonly utilized ceramic material in industry. Purity levels are available from 85% through 99.9%.
Alumina 96%
Alumina represents the most commonly utilized ceramic material in industry. Purity levels are available from 85% through 99.9%. This is because of extremely superior abrasion, high temperature and chemical resistance. It is electrically insulating as well. This material has an excellent cost to part life performance record.
Applications include wear and heat resistant liners, mechanical and pump seals, nozzles, semiconductor equipment components, insulators, etc.
| Properties | Units | Test | Value |
|---|---|---|---|
| Physical | |||
| Chemical Formula | - | - | Al2O3 |
| Density, r | gm/cc | ASTM-C20 | 3.72 |
| Color | - | - | WHITE |
| Crystal Size | MICRONS | THIN-SECTION | 6 |
| Water Absorption | % | ASTM-373 | |
| Hardness | GPa | Knoop 1000gm | 11.5 |
| Mechanical | |||
| Compressive Strength | MPa | ASTM-C773 | 2068 |
| Tensile Strength | MPa | ACMA Test #4 | 221 |
| Modulus of Elasticity (Young's Mod.) | GPa | ASTM C848 | 394 |
| Flexural Strength (MOR) | MPa @ R.T. | ASTM F417 | 310-379 |
| Poisson's Ratio, u | - | ASTM C818 | 0.27 |
| Fracture Toughness, KIc | MPa x m1/2 | Notched Beam Test | 4-5 |
| Thermal | |||
| Max. Use Temperature (* denotes inert atm.) | ºC | No load cond. | 1750 |
| Thermal Shock Resistance | DT (ºC) | Quenching | 200 |
| Thermal Conductivity | W/mK | ASTM-C408 | 24.7 |
| Coefficient of Linear Thermal Expansion, al | mm/m-ºC (~25ºC through ±1000ºC) | ASTM C372 | 8.2 |
| Specific Heat, cp | J/kg*K | ASTM-E1269 | 880 |
| Electrical | |||
| Dielectric Constant | 1MHz @ R.T. | ASTM D150 | 9 |
| Dielectric Strength | ac-kv/mm | ASTM D116 | 8.7 |
| Electrical Resistivity | Wcm @ R.T. | ASTM D1829 | >1014 |
*Although we have no reason to doubt the accuracy of the data presented, Ferro-Ceramic Grinding Inc. offers this information for comparison only, and disclaims any and all liability from error, omissions or inaccuracies, such that it does not constitute a warranty or representation for which we shall assume legal responsibility.