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(submitted by the website administration)
| Alumina ceramic ( 97.5% AL2O3) | ||||
| Chemical composition: 97.5% AL2O3 | ||||
| Property | Value in metric unit | Value in US unit | ||
| Density | 3.85 *10³ | kg/m³ | 240.3 | lb/ft³ |
|---|---|---|---|---|
| Modulus of elasticity | 331 | GPa | 48000 | ksi |
| Flexural strength | 386 | MPa | 56000 | psi |
| Compressive strength | 2070 | MPa | 300000 | psi |
| Fracture toughness | 4.3 | MPa*m½ | 4.3 | MPa*m½ |
| Hardness | 1340 | HV | 1340 | HV |
| Thermal expansion (20 ºC) | 7.6*10-6 | ºCˉ¹ | 4.2*10-6 | in/(in* ºF) |
| Thermal conductivity | 35.4 | W/(m*K) | 245 | BTU*in/(hr*ft²*ºF) |
| Specific heat capacity | 880 | J/(kg*K) | 0.21 | BTU/(lb*ºF) |
| Max. working temperature | 1650 | ºC | 3000 | ºF |
| Dielectric strength (DC) | 9.3 | KV/mm | 235 | V/mil |
| Dielectric constant (1MHz) | 9.4 | - | 9.4 | - |
