Jun 24, 2026
How to Prevent Aluminum Steel Galvanic Corrosion
In most industrial scenarios, aluminum profiles paired with carbon steel and steel structures are the most common metal combination solutions. Aluminum is lightweight, malleable, and cost-effective, while steel is strong and has excellent load-bearing properties, making the combination of the two a good balance between structural strength and lightweight requirements.
However, the majority of engineering failures, structural loosening, and profile perforation failures are rooted in aluminum and steel galvanic corrosion. Many projects ignore the electrochemical compatibility of metals in the early stage, and in the later stage, white powder, pitting and perforation of aluminum, loose bolts, structural deformation and other problems occur in just a few months, which significantly increase the maintenance costs, and even lead to potential safety hazards.
This paper explains from the basic principle of galvanic corrosion, potential sequence law, aluminum and steel corrosion causative factors and other dimensions, to help engineers, purchasing, construction personnel, one-stop solution to the aluminum and steel contact corrosion problems, to extend the service life of aluminum and steel composite structure.