Are aluminum outdoor benches prone to intergranular corrosion in industrial areas?

Aluminum outdoor benches are popular for their lightweight, durability, and resistance to rust. However, in industrial areas with high pollution or chemical exposure, concerns about intergranular corrosion arise. Intergranular corrosion occurs when corrosive agents attack the boundaries between aluminum grains, weakening the material. While aluminum naturally forms a protective oxide layer, certain industrial environments—such as those with high salinity or acidic pollutants—can accelerate corrosion. To mitigate this, benches made from high-grade aluminum alloys (e.g., 6061 or 5052) or those with protective coatings (anodized or powder-coated) are recommended. Regular maintenance, like cleaning and inspections, also helps prolong their lifespan. Overall, with proper material selection and care, aluminum benches can withstand industrial conditions effectively.