Are aluminum outdoor sculptures prone to oxidation if the protective coating wears off?

Aluminum outdoor sculptures are generally resistant to oxidation due to the metal's natural ability to form a protective oxide layer. However, if the additional protective coating wears off, the sculpture may become more susceptible to environmental factors like moisture and pollutants, which can accelerate surface degradation over time. While aluminum doesn't rust like iron, prolonged exposure without protection can lead to dullness or minor corrosion in harsh conditions. Regular maintenance, including recoating with a UV-resistant sealant, can help preserve the sculpture's appearance and structural integrity. For optimal longevity, inspect the coating annually and address any wear promptly.