What is HPA?
- Aluminum oxide (Al2O3) is generally known as alumina
- Alumina is widely used in many large product categories, such as refractories and substrates in electronics
- Most alumina is produced from bauxite ore, as is aluminum metal
- High Purity Alumina contains at least 99.99% Al2O3 (4N)
- 5N and 6N are purer forms of HPA that contain at least 99.999 and 99.9999% Al2O3