Alumina Ceramic Part of Lighting System
Application Field
Alumina ceramics parts are widely using in lighting system with high mechanical property、high hardness、long wearing、 large insulation resistance、good corrosion preventive 、high temperature resistant.
Alumina ceramics parts can be used in lamps and lanterns. The thermal conductivity of alumina ceramic substrates ranges from 29. 3W / (m · K) to 35W / (m · K), which is approximately ten to twenty times that of aluminum substrates. When applied to LEDs, they can perfectly conduct heat and maximize the lifespan of the LED. If equipped with a good heat dissipation radiator, there will be no junction temperature at all, which can provide maximum protection for the lamp beads .China is biggest market of alumina ceramics parts. most of alumina ceramic are exported.
Details
Quantity requirement: 1pc to 1 million pcs. There is no MQQ limited.
Sample lead time: tooling making is 15days+ sample making 15days.
Production lead time: 15 to 45days.
Payment term: negotiated by both parties.
Production process:
Alumina(AL2O3) ceramic is an industrial ceramic which has high hardness, long wearing, and can only be formed by diamond grinding. It is manufactured from bauxite and completed by injection molding, pressing, sintering, grinding, sintering and machining process.
Physical & Chemical Data
| Alumina Ceramic(AL2O3) Character Referance Sheet | |||||
| Decription | unit | Grade A95% | Grade A97% | Grade A99% | Grade A99.7% |
| Density | g/cm3 | 3.6 | 3.72 | 3.85 | 3.85 |
| Flexural | Mpa | 290 | 300 | 350 | 350 |
| Compressive strength | Mpa | 3300 | 3400 | 3600 | 3600 |
| Modulus of elasticity | Gpa | 340 | 350 | 380 | 380 |
| Impact resistance | Mpm1/2 | 3.9 | 4 | 5 | 5 |
| Weibull modulus | M | 10 | 10 | 11 | 11 |
| Vickers hardulus | Hv0.5 | 1800 | 1850 | 1900 | 1900 |
| Thermal Expansion coefficient | 10-6k-1 | 5.0-8.3 | 5.0-8.3 | 5.4-8.3 | 5.4-8.3 |
| Thermal conductivity | W/Mk | 23 | 24 | 27 | 27 |
| Thermal shock Resistance | △T℃ | 250 | 250 | 270 | 270 |
| Max use temperature | ℃ | 1600 | 1600 | 1650 | 1650 |
| Volume resistivity at 20℃ | Ω | ≥1014 | ≥1014 | ≥1014 | ≥1014 |
| Dielectric strength | KV/mm | 20 | 20 | 25 | 25 |
| Dielectric constant | εr | 10 | 10 | 10 | 10 |
Packing
We usually use material such as moisture-proof, shock-proof for the products that will be not damaged. We use PP bag and carton wooden pallets according to customer's requirement. Suitable for sea and air transportation.
