What is the efficiency percentage of a zinc anode?

The efficiency percentage of a zinc anode is generally considered to be around 90%. This efficiency is a measure of how effectively the anode can convert its material into cathodic protection versus how much is wasted due to other reactions that may occur. Zinc anodes are commonly used in cathodic protection systems, especially in marine environments and for protecting steel structures like pipelines.

The 90% efficiency rating reflects the ability of zinc to provide adequate protection against corrosion for the applications it is designed for. This high efficiency means that a significant portion of the anode's material serves its intended purpose in mitigating corrosion, making zinc anodes a popular choice in many protective systems.