Maintaining the original finish of metal sculptures can be a complex task due to various environmental and material-specific challenges. One of the most common issues is corrosion, particularly for iron and steel sculptures exposed to moisture or salty air. Oxidation leads to rust, which can permanently alter the sculpture's appearance if not treated promptly.

Another challenge is the natural development of patina on metals like bronze and copper. While some artists and collectors appreciate the aged look, others strive to preserve the original luster, requiring specialized cleaning methods and protective coatings.

Environmental factors such as pollution, acid rain, and UV radiation can accelerate deterioration, especially for outdoor sculptures. Regular maintenance, including waxing or applying sealants, becomes essential to shield the metal from these elements.

Improper cleaning techniques also pose a risk. Harsh chemicals or abrasive tools can scratch or strip the original finish. Professionals often recommend pH-neutral cleaners and soft cloths to avoid damage.

Lastly, temperature fluctuations cause metal to expand and contract, potentially leading to cracks or finish peeling. Proper installation and climate-controlled environments help mitigate this issue for indoor sculptures. By understanding these challenges, collectors and artists can take proactive steps to preserve metal artworks for generations.