Which Anode

Aluminium

Aluminium

Zinc

Zinc

WHICH ANODE?

ALUMINIUM

VERSUS

ZINC

Many companies recommend Zinc instead of Aluminium for the use of sacrificial anodes.

Benefits of using Aluminium over Zinc where possible.

The facts:

  • Cost of materials – Saving You Money
    Aluminium has a capacity of 2700 A hr/Kg.  This capacity is over 3 times higher than the 780 A hr/Kg capacity of Zinc. The total amount of anode material required (Kg) is less. Without compromising on function the costs for the Cathodic Protection System are reduced.  Aluminium provides the same level of protection without the more expensive cost of Zinc.
  • Installation price – Saving you Money
    Reducing the amount in weight of materials requiring to be installed reduces the installation costs as in some cases less anodes need to be used.
  • Effective over different waters – Room for Movement
    Aluminium works more effectively in brackish water than Zinc due to the higher voltage capacity.
  • Kinder on the water – Saving the Environment
    Helping to reduce pollution. Aluminium alloys contain less harmful elements than Zinc. Due to the A hr/Kg the anode lifespan has the potential to be longer and over time less harmful alloys will be released.

RECOMMENDATIONS FOR WATER TYPE

Salt water – Zinc / Aluminium
Aluminium has a better reactive performance

group-anode-pics-copyBrackish Water – Aluminium

Fresh Water – Aluminium / Magnesium
Pure fresh water, Mag performs the best. For vessels located in polluted water or temporarily located in brackish water we recommend the use of aluminium.

If you any questions please feel free to contact us and we will be happy to help.