It is hard to tell which one is better as both of them have its advantages and disadvantages. The optimal choice depends on the project’s specific needs, environmental exposure, structural requirements, and budget constraints. Choosing between steel and aluminum for outdoor use involves balancing durability, cost, weight, and maintenance. Stainless steel is highly resistant to corrosion, especially in harsh or coastal environments, and offers a strong and premium appearance but at a higher cost. Aluminum is lightweight, cost-effective, and self-protective against corrosion, making it easier to handle and install. Consulting with material experts can guide the best decision for a particular application.
