Artists employ several strategies to ensure their metal sculptures remain resistant to airborne pollutants, which can cause corrosion and aesthetic degradation over time. One common method is selecting corrosion-resistant metals like stainless steel, bronze, or aluminum, which naturally withstand environmental exposure.

For additional protection, artists often apply specialized coatings such as clear lacquers, waxes, or powder coatings. These barriers shield the metal from moisture, acidic rain, and industrial pollutants. Regular maintenance, including cleaning with pH-neutral solutions and reapplying protective layers, further extends the sculpture's lifespan.

Some artists also incorporate design elements like elevated bases or sheltered placements to minimize direct exposure to pollutants. Advanced techniques, such as galvanization or anodizing, provide long-term resistance for outdoor installations. By combining material science with proactive care, artists preserve their metal sculptures for generations.