Whilst the primary benefit of using aluminum in construction is its exceptional corrosion resistance, it is important to note that it has an unmatched strength to weight ratio as well.
Aluminium strength may be fully utilised in structural elements, unlike high tensile cold formed steel since it is much less prone to local/distortional buckling. That is equivalent to much lower cold form steel/aluminium strength ratio while weight ratio is constant.
Extruded structural elements can be formed to almost any shape and specification. For instance flanges may be thicker than webs which can make typical C sections very strong and cost efficient when compared to cold form steel sections.
Aluminium structures are more practical on construction sites, in particular remote locations. Less weight, less machinery to move around, economical to transport, easier to cut, drill etc make aluminium an attractive proposition for many projects.
Aluminium structures has many architectural advantages and aesthetic appeal, making it extremely suitable for premium applications.