Square Aluminum Condenser Anode

Aluminium condenser anode is the most economical choice for corrosion protection in saline aqueous environments, where electrical resistivities are usually quite low. It has a lower weight but a much higher current efficiency than both magnesium and zinc anodes in salt water.

This aluminium condenser anode is cast with a galvanized steel pipe core for mounting on steel studs. It is commonly used in cathodic protection for tank interiors, condenser water boxes, shell of heat exchangers, chillers, tubes or tube sheets in the cooling water system.





Quality Substrate Material
Casted in low-iron, high-purity alloys, our aluminum condenser anode is designed to meet the standard of ISO, NACE, DNV.

Element GALVALUM III DNV-RP-B401-2011 GS EP COR 201
Zinc (Zn) 2.0% ~ 6.0% 2.5% ~ 5.75% 4.75% ~ 5.75%
Indium (In) 0.01% ~ 0.02% 0.015% ~ 0.04% 0.015% ~ 0.02%
Silicon (Si) 0.08% ~ 0.2% 0.12% max. 0.06% ~ 0.12%
Iron (Fe) 0.13% max. 0.09% max. 0.12% max.
Copper (Cu) 0.006% max. 0.003% max. 0.003% max.
Cadmium (Cd) 0.002% max. 0.002% max.
Total Impurities 0.1% max. 0.1% max. 0.1% max.
Aluminum (Al) Remainder Remainder Remainder

Low Driving Voltage
This aluminium condenser anode provides a stable performance in seawater and electrolytes containing chloride ions as its operating potential is kept between -1.05 to -1.10 volts relative to saturated calomel electrode(SCE).

Technical Measurement Performance
Open Circuit Voltage (-V) 1.10 min.
Closed Circuit Voltage (-V) 1.05 min.
Current Capacity 1135 A.h/lbs (2500 A.h/kg)
Current Efficiency 90% min.
Consumption Rate 7.6 lbs/A·y (3.4 kg/A·y)

Much Lighter in Weight
The aluminium condenser anode is less dense than zinc, making it lighter and easier for handling when fitting.

Customized Configurations
A range of standard condenser anodes are illustrated below, custom-made shapes, weights and configurations are available upon request.

Item No. Anode Dimensions Insert Dimensions Weight
Width Height N.W G.W
JA-AL-SP13 8″ (203 mm) 2″ (51 mm) Ø3/4″ (Ø19.05 mm) Pipe 12.5 lbs (5.7 kg) 12.7 lbs (5.8 kg)
JA-AL-SC13 8″ (203 mm) 2″ (51 mm) Ø3/4″ (Ø19.05 mm) NPT Coupling 12.5 lbs (5.7 kg) 12.7 lbs (5.8 kg)
JA-AL-SP23 8″ (203 mm) 4″ (102 mm) Ø3/4″ (Ø19.05 mm) Pipe 23 lbs (10.4 kg) 23.2 lbs (10.5 kg)
JA-AL-SC23 8″ (203 mm) 4″ (102 mm) Ø3/4″ (Ø19.05 mm) NPT Coupling 23 lbs (10.4 kg) 23.2 lbs (10.5 kg)


Main Technical Parameters








Condenser Water Box, Heat Exchanger, Heat Treater


We employ ISO 9001:2015 quality management system and rigorous internal testing standards to ensure the optimum lifespan and performance of our anodes. Each anode is labelled with a unique serial number for quality tracking.

Testing Details Chemical Composition Electrochemical Performance Physical Properties
Testing Standard DNV-RP-B401 NACE TM0190 Foundry ITP
Testing Content Chemical Analysis Circuit Potential / Current Capacity / Current Efficiency / Electrical Resistance Dimension & Weight / Surface Finish / Steel Insert
Equipments Optical Emission Spectrometer OBLF QSN 750 Electrochemical Analyzer EPI 200 Calibrated Digital Measuring Devices