• 1xxx Series: Pure aluminium (99 %+), excellent corrosion resistance, but low strength. Used for chemical tanks and electrical applications.
  • 2xxx Series: Aluminium-copper alloys, high strength, but less corrosion resistant. Common in aerospace.
  • 5xxx Series: Aluminium-magnesium alloys, excellent corrosion resistance and weldability. Common in marine and automotive.
  • 6xxx Series: Aluminium-magnesium-silicon alloys, good balance of strength, corrosion resistance, and machinability. Widely used in construction.
  • 7xxx Series: Aluminium-zinc alloys, very high strength, used in aerospace and defence.