HPA Product

High-purity alumina (HPA) is a processed premium non-metallurgical alumina product characterised by its purity level – i.e. 99.99% (4N) or 99.999% (5N). The market price, application and performance of HPA varies widely according to its degree of purity.

HPA is used because of its superior properties and characteristics, such as excellent corrosion and scratch resistance, high brightness, and its ability to withstand extreme temperatures. It is used as a base material in the manufacture of sapphire substrates for applications such as light emitting diodes (LEDs), in the manufacture of artificial sapphire glass (eg mobile phone and television screens) and in certain battery and power storage components, artificial gemstones and special space, aeronautical and medical applications.

HPA is increasingly becoming the primary sought-after input material for certain high-tech products, principally for its unique characteristics and chemical properties that address those applications’ high specification requirements, such as LEDs and other sapphire glass products.

The longer-term driver for HPA, with forecasts of >17% year-on-year growth (GAGR)*, is the outlook for the burgeoning electric vehicle and static energy storage markets where the primary function is in use as a separator material between the anode and cathode in batteries to increase power, functionality and safety of the battery cells.