
- Business and Product Information
- Chemicals Business
- Products in Development:Low Uranium Alumina

Chemicals Business
Products in Development:Low Uranium Alumina
Products in Development
Low Uranium Alumina
Nippon Light Metal provides low-uranium alumina optimized for semiconductor applications such as encapsulants, molding underfills, and adhesives.
It achieves both an ultra-low uranium design that helps reduce the risk of memory errors and the high thermal conductivity derived from α-alumina.
Please feel free to contact us regarding particle size distribution control (e.g., top-cut classification) according to your application needs.
Typical Properties
| Grade | Ultra-fine grade | Fine grade | Medium grade | |
|---|---|---|---|---|
| U | ppb | <10 | <10 | <20 |
| Na | ppm | <5 | <23 | 11 |
| BET specific surface area | ㎡/g | 10 | 6.5 | 2.6 |
| Average particle size | μm | 0.2 | 0.4 | 1 |
| Maximum particle size | μm | 0.9 | 4.6 | 4.6 |









