How to Choose Anodized Aluminum Extrusions for High-Traffic Areas

In high-traffic areas, durability and aesthetic appeal are essential. Anodized aluminum extrusions provide a viable solution for these demanding environments. Here’s a comprehensive guide to help you select the right anodized aluminum extrusions for your specific needs.

Extrusion Design and Manufacturing

Profile Design: Choose extrusions with a robust profile design that can withstand heavy foot traffic. Consider hollow sections or reinforced ribs for added strength.

Alloy Selection: Opt for durable alloys like 6061-T6 or 6063-T5, which provide excellent strength-to-weight ratios and corrosion resistance.

Heat Treatment: Ensure the extrusions are properly heat-treated to achieve optimal strength and hardness. Look for products that have been subjected to T6 tempering or age hardening.

Anodization Process

Coating Thickness: Specify an appropriate coating thickness based on the expected traffic volume. Thicker coatings (10-20 microns) offer enhanced durability, while thinner coatings (less than 10 microns) provide better surface aesthetics.

Anodization Type: Select from hard anodizing (Type III) for high-wear areas or chromic acid anodizing (Type II) for a decorative finish. Hard anodizing offers superior scratch and wear resistance, while chromic acid anodizing provides color variety.

Surface Seal: Choose extrusions with a sealed surface to protect the anodized layer from oxidation and staining. Standard seals are typically clear, but other options, such as fluorochemical seals, can enhance corrosion resistance.

Quality Control and Standards

Inspection: Implement a standardized inspection process to ensure that the extrusions meet your specifications. Check for defects, dimensional accuracy, and surface quality.

Certifications: Look for extrusions that comply with industry standards, such as ISO 9001 and ASTM B221. Certification guarantees that the products have been manufactured to a consistent and high-quality level.

Additional Considerations

Color Selection: Anodizing allows for a wide range of colors, including natural, black, bronze, and gold. Choose a color that complements the overall design and aesthetic of the area.

Machinability: Consider the machinability of the extrusions if you plan to modify or cut them on-site. Verify the compatibility with standard metalworking equipment.

Environmental Sustainability: Choose extrusions made from recycled aluminum to reduce environmental impact. Also, ask about the finishing company’s environmental practices to ensure sustainable processes.