How do aluminum outdoor sculptures handle exposure to brackish water environments?

Aluminum outdoor sculptures are a popular choice for coastal and brackish water environments due to their natural resistance to corrosion. When exposed to brackish water—a mix of salt and fresh water—aluminum forms a protective oxide layer called patina, which prevents further degradation. This self-protecting feature makes aluminum ideal for marine settings, though regular cleaning to remove salt deposits can prolong its lifespan. Unlike iron or steel, aluminum does not rust, but galvanic corrosion can occur if it contacts dissimilar metals. Proper installation and occasional wax coatings help maintain its appearance. Artists often use marine-grade aluminum alloys for added durability in harsh conditions. With minimal upkeep, aluminum sculptures can thrive in brackish water while retaining their aesthetic appeal.