How does corrosion resistance of aluminum railing compare with steel or iron?

The corrosion resistance of aluminum is fundamentally superior to that of steel or iron, making it the ideal choice for the highly corrosive environments found throughout the Middle East, from the coastal humidity of Al Khobar to the urban condensation in Riyadh. Iron and steel are ferrous metals, meaning they contain iron, which reacts with oxygen and moisture to form iron oxide—commonly known as rust. This process is aggressively accelerated by the presence of salt in coastal areas. While protective coatings like galvanizing or painting can delay this process, any scratch, chip, or imperfection in the coating exposes the raw steel or iron, initiating rust that can spread beneath the finish, causing bubbling, peeling, and eventual structural failure. This necessitates constant vigilance and maintenance. Our aluminum railing, however, is a non-ferrous metal. Its inherent advantage lies in its natural reaction with the atmosphere. When exposed to air, aluminum instantly forms a thin, hard, and transparent layer of aluminum oxide on its surface. This passive oxide layer is incredibly stable and non-reactive, acting as a natural, self-repairing shield that seals the metal from further oxidation and corrosion. We then build upon this natural defense by applying a robust, architectural-grade powder coating. This dual-layer protection system makes our aluminum railing virtually impervious to the elements that would destroy steel or iron. It will not rust, ensuring that its structural integrity and aesthetic beauty remain unblemished for decades, even when directly exposed to salt spray and high humidity. This makes it a far more reliable and cost-effective long-term investment.