Corrosion mapping is a process used to identify and evaluate corrosion on the surface of a material, component, or system. Corrosion mapping typically involves using a variety of techniques, such as visual inspection, electrochemical measurements, and nondestructive testing methods, to assess the extent, severity, and distribution of corrosion on the surface being evaluated.

The results of the corrosion mapping process are typically presented in the form of a corrosion map, which is a visual representation of the corrosion on the surface, showing the location, size, and severity of the corrosion.

Corrosion mapping is used to help identify and prioritize corrosion prevention and repair efforts, and to improve the reliability and performance of materials, components, and systems.