When evaluating public art forms, metal sculptures stand out for their durability and relatively low maintenance costs compared to other materials. Unlike wood, which requires frequent treatments to prevent rot, or stone, which can erode over time, metal sculptures—particularly those made from stainless steel, bronze, or corten steel—resist weathering and vandalism more effectively.

Initial costs for metal sculptures may be higher, but their longevity reduces long-term expenses. For example, bronze develops a protective patina, while stainless steel retains its shine with minimal cleaning. In contrast, murals or fiberglass installations often need repainting or repairs due to fading or cracking.

Additionally, metal sculptures are less prone to insect damage or moisture-related issues, making them ideal for outdoor spaces. While routine inspections and occasional polishing are recommended, their upkeep is generally simpler and more cost-efficient than maintaining fragile glass mosaics or kinetic installations with moving parts.

For cities and public art programs, metal sculptures offer a balance of aesthetic impact and financial practicality, ensuring lasting value with manageable maintenance.