Weight of Aluminum Alloy Cable Tray

The typical weight of an aluminum alloy cable tray is approximately 2.7 kg per liter of metal volume, with actual weight per meter depending on tray type, width, thickness, and perforation.

Calculation Method

The weight of an aluminum cable tray is calculated using the formula: Weight (kg) = Volume × Material Density

• Volume is determined by the tray's cross-sectional area multiplied by its length. For ladder or perforated trays, the cross-sectional area includes side rails, rungs, and bottom sections, adjusted for perforations (typically reducing material by 15–30%) .
• Material Density for aluminum alloy is generally 2,700 kg/m³ . To find the weight per meter, divide the total weight by the tray length: Weight per meter (kg/m) = Total Weight ÷ Length .

Typical Values

• Solid aluminum ladder tray: approximately 4–6 kg/m depending on width (100–600 mm) and side rail height (50–100 mm) .
• Perforated aluminum tray: typically 15–30% lighter than solid trays, often 3–5 kg/m for standard widths .
• Tray covers or additional flanges increase weight slightly, calculated using the same density .

Factors Affecting Weight

1. Tray Type: Ladder, perforated, or solid-bottom designs have different metal volumes.
2. Width and Side Height: Wider trays with taller side rails use more material.
3. Sheet Thickness: Increasing thickness from 1.6 mm to 2.0 mm can increase weight by ~25% for the same profile .
4. Perforation Pattern: Reduces material volume and weight while maintaining structural strength.
5. Accessories: Covers, couplers, and flanges add to the total weight per meter.

Practical Considerations

• Always verify with manufacturer specifications, as actual weights vary by fabrication tolerances, alloy type, and design.
• For structural support design, include a safety factor (typically 1.5–2×) to account for dynamic loads and future cable additions .
• Aluminum trays are lighter than steel, making them suitable for long spans or installations where weight reduction is critical . In summary, aluminum alloy cable trays generally weigh between 3–6 kg per meter, with exact values depending on tray dimensions, perforation, and thickness. Using the density of 2,700 kg/m³ and the tray's cross-sectional volume allows precise calculation for engineering and installation planning .