Square High Temperature Zinc Anode

It is known that common zinc alloys have a tendency to fail at temperatures above 60°C. Above this temperature, zinc alloys can suffer from intergranular corrosion, especially when buried in saline mud. When at high temperature, common zinc anodes may become ineffective or even detrimental to the iron and steel structure intended to be protected by the sacrificial CP system. The zinc anode suffers passivation and polarity reversal —— a dangerous condition in which zinc and steel reverse their natural polarity and steel becomes anodic to zinc, corroding itself and protecting the anode.

To meet the demand of anode applications at high temperature, we have developed this specialized zinc anode that can operate successfully at elevated temperatures up to 90°C.

Our high temperature zinc anode is designed for use in tanks intended for the carriage of liquid cargo with high temperature exposure, hot subsea pipelines and heat exchangers.




Quality Substrate Material
The superior electrochemical performance of the high temperature zinc anodes is ensured by carefully controlling the proportion of alloy elements added into the zinc substrate.

Element ≤ 50°C 50°C ~ 90°C
Aluminum (Al) 0.005% max. 0.1% ~ 0.25%
Magnesium (Mg) 0.05% ~ 0.15%
Lead (Pb) 0.003% max. 0.006% max.
Iron (Fe) 0.0014% max. 0.002% max.
Copper (Cu) 0.002% max. 0.001% max.
Cadmium (Cd) 0.003% max. 0.001% max.
Total Impurities 0.1% max.
Zinc (Zn) Remainder Remainder

Excellent Electric Capacity
The high temperature zinc anode capacity is tested in accordance with the criteria of DNVGL-RP-B401 standards.

Technical Measurement 20°C 60°C 80°C 90°C
Closed Circuit Voltage (-V) 1.03 1.01 0.98 0.95
Current Capacity 800 A.h/kg 770 A.h/kg 774 A.h/kg 750 A.h/kg

Customized Configurations
With the help of our experienced engineers, we can customize the anode size, inserts, service life and output current to meet your specific needs upon request.

Item No. Anode Dimensions Insert Dimensions Weight
Wt Wb H ØD T Lc N.W G.W
JA-HTZ-S22 4.5” (115 mm) 5.5” (140 mm) 7.9” (200 mm) 1.3” (33.4 mm) 0.2” (4.5 mm) 9.8” (250 mm) 48.9 lbs (22.2 kg) 50.7 lbs (23 kg)
JA-HTZ-S50 6.9” (175 mm) 8.1” (205 mm) 7.9” (200 mm) 1.3” (33.4 mm) 0.2” (4.5 mm) 9.8” (250 mm) 111.3 lbs (50.5 kg) 113.1 lbs (51.3 kg)


Main Technical Parameters






Brackish Water, Saline Mud, Seawater


Pipelines, Pylon


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 ATSM B418 NACE TM0190 NACE SP0387 / Foundry ITP
Testing Content Chemical Analysis Circuit Potential / Current Capacity / Current Efficiency / Electrical Resistance Surface Finish / Dimensions & Weight / Steel Insert
Equipments Optical Emission Spectrometer OBLF QSN 750 Electrochemical Analyzer EPI 200 Calibrated Digital Measuring Devices

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