Magnesium Anode

Last updated: May 15, 2019

What Does Magnesium Anode Mean?

A magnesium anode is used as a sacrificial anode in cathodic protection. Magnesium has the highest driving voltage of all the materials used for sacrificial anodes. Magnesium is low on the noble scale, and therefore corrodes easily. Therefore, if it is placed within a system that uses large amounts water, it attracts the corrosion away from other components.


Corrosionpedia Explains Magnesium Anode

Magnesium anodes fight corrosion effectively and economically, and are commonly used in marine environments. They protect a variety of steel structures in salt, brackish and fresh water, including:

  • Boats
  • Ballast tanks
  • Bulkheads
  • Water storage tanks
  • Pilings
  • Pipelines
  • Heat exchangers

Magnesium anodes corrode much more easily than the materials they are protecting, drawing the corrosion away from equipment.


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