Metal sculptures are a popular choice for outdoor art due to their durability and aesthetic appeal. However, extreme temperature fluctuations can pose challenges to their structural integrity. Metals expand when heated and contract when cooled, a phenomenon known as thermal expansion. This repeated stress can lead to warping, cracking, or even breakage over time.

To mitigate these effects, artists and engineers select metals with lower thermal expansion coefficients, such as bronze or stainless steel, which are more resistant to temperature changes. Additionally, proper installation techniques, like allowing for expansion gaps and using flexible joints, help sculptures adapt to varying climates.

Regular maintenance, including inspections for stress fractures and protective coatings, ensures longevity. Despite the challenges, metal sculptures remain a resilient and captivating form of outdoor art, capable of enduring harsh environmental conditions with the right care and materials.