Aluminum: Higher driving potential than zinc or aluminum- mercury alloys → stronger, more reliable corrosion protection
Zinc: Zinc alloyed sacrificial anodes that works well in seawater and sediment conditions. Available in numerous shapes and sizes, with various mounting options.
Magnesium: 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 compared to steel.
