Aluminum windows have been widely used in commercial applications for more than 50 years. The principal aluminum alloy used in fenestration products is Type 6063. This aluminum is tempered for additional strength. T5 has a tensile strength of 22,000 psi, while T6 has a tensile strength of 32,000 psi.
Aluminum offers substantial advantages affecting both window performance goals and design requirements. Understanding these properties is important in choosing window frame options.
Aluminum extrusions maintain their original shape through the expansion and contraction of thermal cycles, and resist permanent deflection under structural load, delivering high performance over the life of the product.
The extrusion process enables the production of highly accurate profiles, which translates into precision joinery and enhanced aesthetics for higher performance values and lasting beauty.
Aluminum is impervious to humidity and thermal deterioration; it will not warp, swell, shrink, split, crack, rot, or rust. It does not become brittle in cold conditions or soft and chalky in hot climates. It is highly resistant to corrosion and high heat.
In terms of the economic benefits of aluminum, it has the lowest total cost of ownership of all fenestration products and the longest useful life.
The strength-to-weight physical properties of aluminum allow for slimmer sightlines. Aluminum is 34 times stronger than vinyl and 43 times stronger than wood.
Aluminum is available in several finishing options and myriad colors. Architectural paints or anodized coatings provide an attractive finish for frames and excellent resistance to the elements. Once coated, aluminum typically does not require refinishing.
Aluminum is 100% recyclable. The cost of recycling aluminum is approximately 5% of the original cost to produce it and saves more than 90% of the energy costs associated with primary production. Roughly 75% of all aluminum produced since its discovery is still in circulation today.
Overall, aluminum windows offer incredible value. Aluminum is highly adaptable, provides design flexibility, and offers high strength and durability. At St. Cloud Window, we use the highest-quality aluminum. View our product list for our full selection of aluminum windows.