What are the effects of prolonged exposure to candle heat on metal surfaces?

Prolonged exposure to candle heat can significantly impact metal surfaces, leading to visible and structural changes. The primary effects include discoloration, as the heat oxidizes the metal, often turning it darker or creating uneven patches. Over time, thermal stress may cause warping or deformation, especially in thinner metals. High temperatures can also weaken the metal's integrity, making it more prone to cracks or brittleness. Additionally, residues from candle soot or wax may adhere to the surface, further degrading its appearance. To minimize damage, avoid placing candles directly on metal surfaces or use heat-resistant barriers. Regular cleaning and protective coatings can also help preserve metal quality under such conditions.