Aluminium’s natural corrosion resistance is attributed to its affinity for oxygen. When exposed to the atmosphere, aluminium reacts with oxygen to form a thin, protective layer of aluminium oxide on the surface, with this layer acting as a barrier that prevents further oxidation of the underlying metal, thereby offering protection against a range of corrosive substances..

Environmental Factors Affecting Corrosion

The corrosion resistance of aluminium pipes can vary depending on the environmental conditions to which they are exposed, which can create differing performances depending on the industry. While they perform excellently in neutral and slightly acidic or alkaline environments, in highly acidic or highly alkaline conditions, their protective layers can become compromised, leading to corrosion.

In comparison

When compared to other materials including steel, a commonly used material for piping, aluminium pipes have a clear advantage in terms of corrosion resistance. Steel can rust and deteriorate rapidly when not properly coated or if the protective coatings are damaged. Aluminium pipes, on the other hand, are a much better maintenance-free solution with their higher resistance to rusting, making them a more affordable choice in terms of time and money.

Coatings and Treatments

To enhance the corrosion resistance of aluminium pipes for certain applications, various coatings and treatments can be applied. Anodizing, a process that thickens the natural oxide layer, can provide additional protection and also allows for colourizing the aluminium. Overall though, aluminium pipes can be a very good solution when looking at corrosion as a determining factor, making it popular across many industries.

Aluminium pipes are suitable for a wide array of applications, from plumbing and heating to industrial and marine uses. Their natural protective layers allows for flexibility in engineering applications that require durable, lightweight, and long-lasting piping solutions.