• High hardness
• Wear & abrasion resistant
• High compressive strength
• High mechanical Strength
• Resists strong acid and alkali attack at high temperatures
• Excellent electrical insulation properties
• Decent thermal conductivity
Properties of alumina caramic | ||||||
Item | Unit | 95% AI2O3 | 99% AI2O3 | |||
Color | - | white | ivory | |||
Density | g/cm³ | 3.65 | 3.88 | |||
Water Absorption | % | 0 | 0 | |||
Young's Modulus | Gpa | 280 | 350 | |||
Vickers Hardness | Gpa | 14 | 20 | |||
Flexural Strength ( at R.T. ) | Mpa | 280 | 300 | |||
Compressive Strength ( at R.T. ) | Mpa | 2000 | 2500 | |||
Thermal Conductivity ( at R.T. ) | W/(m.K) | 18-25 | 30 | |||
Thermal Shock Resistance | △t ( ℃ ) | 220 | 180-200 | |||
Max Working Temperature | ℃ | 1500 | 1700 | |||
Volume Resistivity ( at R.T. ) | Ω.cm | >1015 | >1014 | |||
Dielectric Constant ( 1MHz at R..T. | - | 9.50 | 9.80 | |||
Dielectric Strength | kV/mm | 16 | 22 |