Anodizing Sustainability
Aluminum Life Cycle Enhancement with Anodizing
Environmental impact is widely acknowledged
Aluminum is one of the most durable and versatile of metals, offering improved mileage in automobiles by virtue of its lightweight and tremendous recyclability. According to the Aluminum Association, about one-third of all aluminum produced in the U.S. today is from recycled sources, saving some 95 percent of the energy required to produce aluminum from raw materials. Anodizing accentuates the environmental benefits of aluminum.
Anodizing enhances aluminum and its environmental virtues. Anodizing uses the base metal – the aluminum alloy – to create a thin, extremely strong and corrosion-resistant finish. The anodized surface is very hard and thus preserves and extends the life of the aluminum product.
In Contrast to Anodizing, Coatings & Paint
for example – can dramatically reduce the ability to recycle the aluminum and can increase costs. Paints, plastics, and plating rely on problematic materials in their production that can compromise green objectives. Anodizing, on the other hand, is “recycle-neutral” with minimal use of such materials as volatile organic compounds (VOCs) and heavy metals.
The corrosion resistance of anodized aluminum is well established for industrial applications. Transportation components, building elements, storage containers, and process equipment utilize anodizing to extend the life and expand the utility of aluminum structures. Anodized aluminum is safe for cookware and provides durable work surfaces for applications that require superior abrasion-resistance.
Anodizing also reduces friction and increases lubricity, an advantage with fitted components and for moving parts. Increased wear resistance means a longer life cycle. Hardcoat anodizing further improves wear resistance and general coating durability to physical forces.
Environmental Impacts
In light of environmental impacts, anodized aluminum is the “naturally green” material. Anodizing accentuates the environmental benefits of aluminum without compromising them, and the process is relatively benign when compared to other materials and processes.