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Low compounds

The purity of normal aluminum is 99.7%, and about 0.3% of Si, Fe, and Cu are contained as unavoidable impurities. These impurities are derived from bauxite, which is the raw material of aluminum, alumina, and the electrolytic bath and electrodes for molten salt electrolysis. These impurities are present in aluminum as a solid solution or intermetallics (e.g., Al-Fe intermetallics). By highly purifying aluminum, the amount of element impurities is reduced. This can reduce the density of intermetallics.

Customer value

  • Defects due to surface treatment can be reduced.
  • Corrosion can be reduced.
  • Dissolution in the solution can be reduced.