Zirconia fused alumina is produced by putting rich aluminum, zirconium materials and additives in electric furnace, smelting with high temperature above 2000°C,cooling down with special technology, and compacting with Barmac plastic, which has the characteristics of tenacious texture, dense structure and high strength.
Chemical composition：
| GRADE | Al2O3 | ZrO2 | TiO2 | Fe2O3 | SiO2 |
| ZA25% | 68-72 | 24-30 | ≤1.5 | ≤0.5 | ≤1.0 |
| ZA40% | 55-57 | 35-44 | ≤1.5 | ≤0.5 | ≤1.0 |
| Available Sizes | 0-0.5MM 0.5-1MM 1-1.5MM 0-1MM 1-2MM 2-3MM 1-3MM 3-5MM | ||||
| F4 F5 F6 F7 F8 F10 F12 F14 F16 F20 F22 F24 F30 F36 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220 | |||||
Physical properties：
| Crystal Form | Monoclinic,tetragonal system |
| Reaction with acid and alkali | no |
| Reaction with carbon | Forming carbide since 1650℃ |
| Color | Grey |
| True Density | 4.20g/cm3 |
| Bulk Density | 2.18g/cm3 |
| Moh’s hardness | 9.0 |
| Melting point | 1900℃ |
| Knoop hardness | 1450-2000kg/cm2 |
| Maximum service temperature | 1700℃ |
| Specific heat capacity(cal/g.℃) | 0.2205(50-500℃) |
| Heat conductivity | 0.2718 cal/cm2.sec.℃ |
| Linear expansivity(X10-6) | 6.82(100-700℃) |
