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