What is the general anode efficiency rating of aluminum?

The general anode efficiency rating of aluminum is commonly accepted to be around 90%. This high efficiency rating reflects aluminum's ability to effectively facilitate the electrochemical reactions during the process of corrosion protection, especially when aluminum anodes are used in applications such as cathodic protection systems.

This efficiency rating indicates how effectively the aluminum anode converts electrical energy into usable protection against corrosion without significant losses. A 90% anode efficiency means that a high percentage of the anode's potential is directed toward preventing corrosion rather than being lost to side reactions.

The other ratings, while they may represent efficiencies for different materials or conditions, fall short in comparison, as aluminum is particularly renowned for its effectiveness in cathodic protection scenarios. This characteristic is part of why it is such a widely used material for anodes in various applications, including marine environments, and it highlights the value of aluminum as an effective corrosion protection mechanism.