Galvanized cable trays are made of aluminum alloy

Galvanized cable trays are made of steel coated with zinc, not aluminum alloy.

Galvanized cable trays consist of steel with a protective zinc coating that prevents rust and corrosion, extending the tray's lifespan in environments exposed to moisture or chemicals . The galvanization process can be done via hot-dip or electro-galvanization, providing sacrificial protection where the zinc corrodes first to protect the underlying steel . These trays are widely used for their cost-effectiveness, durability, and ease of installation in industrial and commercial applications . In contrast, aluminum alloy cable trays are made from aluminum mixed with other elements, such as magnesium and silicon, to enhance strength and corrosion resistance. Common alloys include 6061 and 6063, with 6063-T6 being popular for structural applications due to its lightweight, corrosion resistance, and non-magnetic properties . Aluminum trays are preferred in marine, chemical, or high-corrosion environments and offer advantages like easier field modifications and reduced labor during installation . Key Differences:

• Material: Galvanized trays = steel + zinc coating; Aluminum trays = aluminum alloy (e.g., 6063-T6)
• Weight: Aluminum trays are lighter, reducing installation effort
• Corrosion Resistance: Galvanized steel relies on zinc coating; aluminum is homogenous and naturally corrosion-resistant
• Cost: Galvanized trays are generally cheaper initially, while aluminum trays have higher upfront cost but potentially longer service life in harsh environments In summary, galvanized cable trays are not made of aluminum alloy; they are steel trays protected by a zinc coating, whereas aluminum alloy trays are a separate category designed for lightweight and corrosion-resistant applications.