Aliminium Anodes


An aluminum anode is a galvanic anode and a major component of a galvanic cathodic protection system, which is used to prevent corrosion of buried or submerged metal structures such as pipelines, tanks or other related equipment. They are also classified as sacrificial anodes, which are intended to sacrifice themselves to the corrosion process, thereby leaving the rest of the system relatively corrosion-free.

Technical performance

  • Capacity: 2651 Ah/kg
  • Consumption rate: 3.30 kg/Ayear
  • Specific gravity: 2.78 kg/dm3
  • Closed circuit potential: -1100 mV vs Ag/AgCl/seawater

Chemical composition (% by weight)

  • Zinc (Zn): min 2.5, max 5.5
  • Indium (In): min 0.015, max 0.04
  • Copper (Cu): max 0.005
  • Iron (Fe): max 0.09
  • Silicon (Si): max 0.10
  • Others (each): max 0.02
  • Aluminium: remainder