Round Magnesium Condenser Anode

Our H-1 alloy magnesium condenser anodes are tailored for high-resistivity environments like freshwater. Ideal for various applications such as heat exchangers and cooling towers.



We produce a comprehensive range of H-1 alloy magnesium condenser anodes tailored for use in freshwater or high-resistivity aqueous settings. These anodes are perfect for applications such as heat exchangers, condenser water boxes, cooling towers, intercoolers, and tank interiors.

Quality Substrate Material
Crafted using top-quality magnesium alloy, our condenser anode adheres to the American standard ASTM B843 – AZ63C.

Element Content
Aluminum (Al) 5.3% – 6.7%
Manganese (Mn) 0.15% – 0.7%
Zinc (Zn) 2.5% – 3.5%
Silicon (Si) 0.1% max.
Copper (Cu) 0.02% max.
Iron (Fe) 0.03% max.
Nickel (Ni) 0.02% max.
Other Impurity (each) 0.05% max.
Total Impurities 0.03% max.
Magnesium (Mg) Remainder


Custom-made Electro-potential Options
Our standard magnesium condenser anode is typically made with H-1 alloy, providing a standard potential of -1.55 volts compared to the saturated calomel electrode (SCE). Upon request, we offer high-potential magnesium anodes as well.

Technical Measurement Performance
Open Circuit Potential (-V) 1.5 ~ 1.55
Close Circuit Potential (-V) 1.45 ~ 1.5
Min. Current Capacity 550 A.h/lbs (1230 A.h/kg)
Current Efficiency 55% min.


Optional Plastisol Coating
Our magnesium condenser anode is offered in bare or plastisol-coated options. The polyvinyl chloride (PVC) plastisol coating acts as an effective barrier shield against current on the sides, ends, and faying surfaces.

Customized Configurations
Keeper Anodes offers a range of standard sizes available in our warehouse. With over 50 years of production expertise, we can tailor the anode shape, sizes, and longevity to suit your exact requirements upon inquiry.

Additional information






Fresh Water


Condenser Water Box, Heat Exchanger, Cooling Tower, Intercooler