Overview
Aluminum anodes provide the highest capacity per kilogram of any sacrificial anode, making them the first choice for seawater and mud environments with low resistivity. They are commonly extruded as bracelet or plate shapes for subsea pipelines.
Advantages
Compared with magnesium anode and zinc anode, aluminum alloys deliver more amp-hours per kilogram and a lighter weight profile, which reduces handling cost on large offshore projects.
Key Specifications
| Parameter | Typical Value |
|---|---|
| Capacity | 2500 to 2800 A.h/kg |
| Driving potential | -1.10 V vs CSE |
| Typical alloy | Al Zn In |
| Density | 2.7 g/cm3 |
Typical Applications
- Subsea pipeline bracelets
- Offshore wind foundations
- Ballast and cargo tanks
- Harbor sheet piles
Related Solutions
For very large cathodic protection networks, aluminum anodes are often complemented by an MMO anode or an ICCP system to extend design life and stabilize output.
