Anode for Heat Treating Aluminum in Spherical Shape

High-quality aluminum condenser anodes for superior corrosion protection in diverse environments.



This spherical aluminum anode serves as a convenient sacrificial anode that can be easily replaced. It is designed for use in heat treaters, pressure vessels, and various production vessels. These anodes are specifically effective in environments with high temperatures and low chloride content in either saltwater or freshwater conditions.

Quality Substrate Material

Crafted from an alloy with high voltage and high potential, our aluminum spherical anode is engineered to comply with ISO, NACE, and DNV standards.

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

The aluminum spherical anode maintains consistent performance in seawater and electrolytes with chloride ions due to its operational potential being maintained within the range of -1.10 to -1.15 volts compared to the 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)


Customized Configurations

The diagram below shows the standard size of the anode. We also offer custom shapes, weights, and configurations upon request.

Item No. Ball Diameter Insert Dimensions Weight
KA–AL–B47 Ø9.84” (Ø250 mm) Ø1.3” (Ø34 mm) 4.0” (102 mm) 1” 47.5 lbs (21.5 kg) 49.5 lbs (22.5 kg)



We adhere to the ISO 9001:2015 quality management system and conduct thorough internal testing to guarantee the best possible lifespan and performance of our anodes. Each anode is assigned a distinct serial number to facilitate quality monitoring and 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