Magnesium anodes have good corrosion resistance, moderate strength, low density, and good ductility. They are often used as sacrificial anodes in home water heaters. One magnesium anode should last around six years, which is why most water heaters have a six year warranty. The anode is there to protect the small amount of exposed steel in the water tank and prevent leaks.
Magnesium sacrificial anodes are also used in marine applications. Magnesium anodes are available upon request. Please contact use with your size and shape requirements.