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Aluminum anodes often exhibit a slower consumption rate than traditional zinc anodes due to their higher energy density, which is a standard performance characteristic rather than a sign of failure. When transitioning a vessel's cathodic protection system from zinc to aluminum, all connected anodes within the bonding system must be replaced simultaneously to prevent the aluminum from accelerating the corrosion of any remaining zinc components.1:03 Proper function depends on using high-quality, specifically formulated aluminum alloys from reputable manufacturers, as generic aluminum does not provide the necessary sacrificial protection.1:51 These anodes are now widely available for propellers, shafts, and bow thrusters.1:20 For further technical guidance on galvanic and stray current corrosion, the website performancemetals.com provides detailed information on anode applications and material specifications.2:03 Using the correct alloy ensures the sacrificial metal effectively protects the underwater hardware.1:54

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