does aluminum railing rust

Aluminum is inherently corrosion-resistant and does not rust like ferrous metals. When exposed to oxygen, aluminum forms a thin, protective oxide layer that shields the substrate from further oxidation. However, in harsh environments—coastal areas with salt spray or industrial zones with acid rain—untreated aluminum may corrode over time, leading to surface pitting and discoloration. Archsky’s aluminum railing products are available with anodized or polyester powder-coat finishes that significantly bolster corrosion resistance, UV stability, and scratch hardness. Anodizing increases the oxide thickness, while powder coatings provide a durable, colorful barrier. Routine cleaning with mild detergent and water preserves the finish, ensuring decades of maintenance-free performance without the rust concerns associated with steel railings.