Pepper Mill Aluminum Oxide Ceramic Grinder Parts High Wear Resistance
Alumina ceramic grinder
1. Description
Aluminium Oxide, Al2O3 is the most widely applied and cost effective technical ceramic material. It offers a combination of superior mechanical strength and electrical properties, wear resistance and corrosion resistance. The maximum working temperature is up to 1700 °C with relatively high thermal conductivity. It is also an electrically insulating material with a high electrical resistivity. The good corrosion resistance makes it insoluble in water and slightly soluble in strong acid and alkaline solution.
2. Technical Parameter:
| Item | Unit Symbol | 95% Alumina Ceramics | 99% Alumina Ceramics | 99.7% Alumina Ceramics |
| Maximum Using Temperature | ℃ | 1600 | 1700 | 1700 |
| Water Absorption | % | 0 | 0 | 0 |
| Hardness | Gpa | ≥85 | ≥89 | ≥89 |
| Flexural Strength | MPa (psi x 103) | 336 | 550 | 550 |
| Compressive Strength | MPa (psi x 103) | 2000 | 2500 | 2500 |
| Fracture Toughness | Mpa | 4~5 | 5.6 | 6 |
| Thermal Conductivity | W/m °K | 18-25 | 30 | 30.4 |
| Thermal Shock Resistance | °C | 220 | 180-220 | 180-220 |
| Dielectricity Constant | 9.4 | 9.8 | 9.8 | |
| Dielectric Strength | kV/mm | 16 | 22 | 22 |
Characteristics:
Wear-resisting performance is good
This ceramic grinder used on the coffee/pepper grinder,which has good corrosion resistance, high operating temperature, good
mechanical characteristics, high wear resistance, high hardness, high thermal shock resistance.
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