99.5% Alumina Ceramic Performance |
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99.5% Alumina Ceramic is white powder or fine sand, with good fluidity, stable performance, less soluble in acid and alkali solution, and good sintering performance.As 99.5% Alumina Ceramic material for high alumina refractories, electromagnetic devices and polishing and grinding products. High density and high impact energy can greatly improve the grinding efficiency.The bottom abrasion can ensure the purity of the 99.5% Alumina Ceramic crushed material, and its wear resistance is 2030 times higher than the traditional ball-stone.Good chemical stability, corrosion resistance, can be used in acid medium. |
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precision bearing, instrument, instrument, pen making, mechanical parts, punching hole, oil field, hydrochloric acid laboratory, hardness measuring instrument, fishing gear, counterweight, decoration, finishing and other high-end industries.
99.5% Properties of Alumina
| Mechanical properties | Unit | Parameter |
| The density of | gm/cc (lb/ft3) | 3.89 |
| porosity | % (%) | 0 |
| color | — | beige |
| Bending strength | MPa (lb/in2x103) | 379 |
| Modulus of elasticity | GPa (lb/in2x106) | 375 |
| The shear modulus | GPa (lb/in2x106) | 152 |
| Modulus of elasticity of volume | GPa (lb/in2x106) | 228 |
| Poisson's ratio | — | 0.22 |
| The compressive strength | MPa (lb/in2x103) | 2600 |
| hardness | Kg/mm2 | 1440 |
| Fracture toughness | MPa•m1/2 | 4 |
| Maximum no-load service temperature | °C (°F) | 1750 |
| Heat energy | ||
| Thermal conductivity | W/m°K (BTU•in/ft2•hr•°F) | 35 |
| Coefficient of thermal expansion | 10–6/°C (10–6/°F) | 8.4 |
| Specific heat | J/Kg•°K (Btu/lb•°F) | 880 |
| electrical | ||
| Dielectric strength | ac-kv/mm (volts/mil) | 16.9 |
| permittivity | @ 1 MHz | 9.8 |
| Dissipation factor | @ 1 kHz | 0.0002 |
| The loss factor | @ 1 kHz | — |
| Volume resistivity | ohm•cm | >1014 |
Properties of Alumina/Aluminum Oxide (Al2O3)
1.Very good electrical insulation (1x1014 to 1x1015 Ωcm)
2.Moderate to extremely high mechanical strength (300 to 630 MPa)
3.Very high compressive strength (2,000 to 4,000 MPa)
4.High hardness (15 to 19 GPa)
5.Moderate thermal conductivity (20 to 30 W/mK)
6.High corrosion and wear resistance
7.Good gliding properties
8.Low density (3.75 to 3.9 g/cm3)
9.Operating temperature without mechanical load 1,000 to 1,500°C.
10.Bioinert and food compatible
99.5% Alumina Ceramic Products and Aplications
– Pieces, Plates, Boards, Trays, etc. in Alumina-Ceramic / Cordierite-Mullite
– Tubes, Rods, Rollers, Supports, etc. in Alumina-Ceramic / Cordierite-Mullite
– Protection, Thermocouples, Insulation, etc. in Alumina-Ceramic / Cordierite-Mullite
– Pieces, Plates, Tubes, Rods, Rollers, etc. in Zirconium Oxide
– others
| For more information about 99.5% Alumina Ceramic,please contact our engineers in time >>> |
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