A 3 mm 5-bar aluminum tread plate weighs about 8.5 kg/m² (1.74 lb/ft²) for 5052-H32 and about 8.6 kg/m² for 6061-T6, rising to roughly 17 kg/m² (3.5 lb/ft²) at 6 mm. The raised pattern adds ~5–8% over a smooth sheet. To get a single sheet's weight, multiply kg/m² by the sheet area (a 4×8 ft sheet is 2.98 m²).
Aluminum tread plate (also called checkered plate, durbar or floor plate) is a rolled sheet with a raised pattern on one face and a smooth back. The pattern - usually 5-bar, diamond, 2-bar or rice-grain - gives slip resistance for truck beds, stairs, walkways, vehicle flooring and decorative cladding. Because buyers price, freight and stock by mass, the weight per area is the single most-requested number. The tables below give theoretical weights for the six most common tread-plate alloys across 1.5–12 mm thickness.
How to Calculate Aluminum Tread Plate Weight
The theoretical weight per square metre is the smooth-sheet weight plus a small pattern overhead:
Weight (kg/m²) = thickness (mm) × alloy density (g/cm³) × pattern overhead
Use 1.06 for a typical 5-bar plate (≈6% pattern mass). For diamond, 2-bar and rice-grain the overhead is similar (5–8%); for mill finish with no pattern use 1.00. The alloy densities used here are:
| Alloy & temper | Density (g/cm³) | Notes |
|---|---|---|
| 1100-O | 2.71 | Pure-Al, light, decorative |
| 3003-H22 | 2.73 | General-purpose workhorse |
| 5052-H32 | 2.68 | Marine-grade, good formability |
| 5083-H116 | 2.66 | Marine structural, higher strength |
| 5754-H114 | 2.71 | Marine / general, medium strength |
| 6061-T6 | 2.71 | Structural, highest strength of the group |
Densities are typical wrought-aluminum values (ASTM B209 / EN 573-3). The 1.06 pattern factor is an average; actual raised-mass varies with pattern height and mill practice.
Aluminum Tread Plate Weight Table - kg/m²
Theoretical weight of 5-bar tread plate (≈6% pattern overhead). 1 mm = 0.0394 in; 1 kg/m² = 0.2048 lb/ft².
| Thickness | 1100-O | 3003-H22 | 5052-H32 | 5083-H116 | 5754-H114 | 6061-T6 |
|---|---|---|---|---|---|---|
| 1.5 mm | 4.31 | 4.34 | 4.26 | 4.23 | 4.31 | 4.31 |
| 2.0 mm | 5.75 | 5.79 | 5.68 | 5.64 | 5.75 | 5.75 |
| 3.0 mm | 8.62 | 8.68 | 8.52 | 8.46 | 8.62 | 8.62 |
| 4.0 mm | 11.49 | 11.58 | 11.36 | 11.28 | 11.49 | 11.49 |
| 5.0 mm | 14.36 | 14.47 | 14.20 | 14.10 | 14.36 | 14.36 |
| 6.0 mm | 17.24 | 17.36 | 17.04 | 16.92 | 17.24 | 17.24 |
| 8.0 mm | 22.98 | 23.15 | 22.73 | 22.56 | 22.98 | 22.98 |
| 10.0 mm | 28.73 | 28.94 | 28.41 | 28.20 | 28.73 | 28.73 |
| 12.0 mm | 34.47 | 34.73 | 34.09 | 33.84 | 34.47 | 34.47 |
Computed: kg/m² = thickness × density × 1.06, rounded to 2 decimals. [exact raised-mass for your pattern and mill tolerance - request the EN 10204 3.1 MTC for certified weights.]
Same Table in lb/ft²
Multiply each kg/m² figure by 0.2048. Values rounded to 2 decimals.
| Thickness | 1100-O | 3003-H22 | 5052-H32 | 5083-H116 | 5754-H114 | 6061-T6 |
|---|---|---|---|---|---|---|
| 1.5 mm | 0.88 | 0.89 | 0.87 | 0.87 | 0.88 | 0.88 |
| 2.0 mm | 1.18 | 1.19 | 1.16 | 1.16 | 1.18 | 1.18 |
| 3.0 mm | 1.77 | 1.78 | 1.74 | 1.73 | 1.77 | 1.77 |
| 4.0 mm | 2.35 | 2.37 | 2.33 | 2.31 | 2.35 | 2.35 |
| 5.0 mm | 2.94 | 2.96 | 2.91 | 2.89 | 2.94 | 2.94 |
| 6.0 mm | 3.53 | 3.56 | 3.49 | 3.47 | 3.53 | 3.53 |
| 8.0 mm | 4.71 | 4.74 | 4.66 | 4.62 | 4.71 | 4.71 |
| 10.0 mm | 5.88 | 5.93 | 5.82 | 5.78 | 5.88 | 5.88 |
| 12.0 mm | 7.06 | 7.11 | 6.98 | 6.93 | 7.06 | 7.06 |
Single-Sheet Weights: 4×8 ft and 5×10 ft
The two most-stocked sheet sizes are 4×8 ft (1.22 × 2.44 m = 2.98 m²) and 5×10 ft (1.525 × 3.05 m = 4.65 m²). Weights below are per sheet (5-bar, ≈6% overhead).
| Alloy / temper | Thickness | 4×8 ft (kg) | 5×10 ft (kg) |
|---|---|---|---|
| 3003-H22 | 2.5 mm | 21.5 | 33.7 |
| 5052-H32 | 3.0 mm | 25.4 | 39.6 |
| 3003-H22 | 3.0 mm | 25.8 | 40.4 |
| 6061-T6 | 3.0 mm | 25.7 | 40.1 |
| 5083-H116 | 4.0 mm | 33.6 | 52.5 |
| 5052-H32 | 6.0 mm | 50.7 | 79.3 |
| 6061-T6 | 6.0 mm | 51.3 | 80.2 |
For a mill-finish (no pattern) sheet, reduce the figure by about 6%. [exact per-sheet weight for your pattern and size - GNEE provides certified weights on the MTC.]
Pattern Types and Their Weight Overhead
| Pattern | Overhead vs smooth | Typical use |
|---|---|---|
| 5-bar | +5–6% | Truck beds, trailers, stair treads, walkways |
| Diamond | +5–7% | Flooring, tool boxes, decorative trim |
| 2-bar | +6–7% | Heavy-duty flooring, industrial |
| Rice-grain | +4–5% | Architectural fascias, light decorative |
| Mill finish (no pattern) | 0% | Smooth sheet, not slip-resistant |
The pattern is raised on one face only; the reverse is smooth and weldable/paintable.
Unit Conversions
kg/m² → lb/ft²: multiply by 0.2048 (1 kg/m² = 0.2048 lb/ft²).
lb/ft² → kg/m²: multiply by 4.8824.
4×8 ft sheet total (kg): 9.29 × kg/m² (area 2.98 m²).
5×10 ft sheet total (kg): 14.51 × kg/m² (area 4.65 m²).
lb/in² → kg/m²: multiply by 703.07. kg/m² → lb/in²: multiply by 0.001422.
Sheets per Tonne and Container Load
Most international buyers purchase by the metric tonne because freight, duty and stock are mass-based. Using the tables above:
1 metric tonne of 3 mm 5052-H32 5-bar (25.4 kg/sheet) ≈ 39 standard 4×8 ft sheets.
100 sheets of 6 mm 6061-T6 4×8 ft (51.3 kg/sheet) ≈ 5.13 metric tonnes.
20 ft container holds roughly 20–25 t, equal to about 790–990 sheets of 3 mm 4×8 ft 5052 tread plate (indicative; depends on alloy, packing and container payload limit).
FAQ
How do you calculate the weight of aluminum tread plate?
Weight per square metre = thickness (mm) × alloy density (g/cm³) × pattern overhead (1.06 for a 5-bar plate). Multiply kg/m² by the sheet area to get per-sheet weight. Example: a 3 mm 5052-H32 5-bar plate is 3 × 2.68 × 1.06 = 8.52 kg/m².
How much does a 4×8 ft sheet of aluminum tread plate weigh?
A 4×8 ft sheet is 1.22 × 2.44 m = 2.98 m². At 3 mm, 5052-H32 weighs about 25.4 kg, 3003-H22 about 25.8 kg and 6061-T6 about 25.7 kg. At 6 mm, 5052-H32 is about 50.7 kg and 6061-T6 about 51.3 kg per sheet.
Does the raised pattern add much weight?
Yes, but modestly. The raised pattern adds about 4–8% over a smooth sheet of the same thickness, depending on pattern type and bar height. A 5-bar plate is usually quoted with a 6% overhead; mill-finish (no pattern) uses 0%. The pattern is on one face only; the back stays smooth.
How do I convert kg/m² to lb/ft²?
Multiply kg/m² by 0.2048 to get lb/ft² (1 kg/m² = 0.2048 lb/ft²). Reverse it by multiplying lb/ft² by 4.8824. For a 4×8 ft sheet, total kg = 9.29 × kg/m²; for a 5×10 ft sheet, total kg = 14.51 × kg/m².
Which alloys are common for aluminum tread plate?
The most common tread-plate alloys are 3003, 5052, 5083, 5754 and 6061-T6. 3003 and 5052 are general-purpose; 5083 and 5754 are used where seawater corrosion resistance matters; 6061-T6 is chosen for higher structural strength. 1100 is used for light, non-structural decorative work.
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About these numbers
GNEE stocks aluminum tread plate in 3003, 5052, 5083, 5754 and 6061-T6, in 5-bar, diamond and other patterns, and supplies EN 10204 3.1 mill certificates with certified per-coil/per-plate weights. The figures on this page are theoretical (thickness × density × pattern factor); for load calculations and freight quotations, use the certified weights on the MTC or ask GNEE for a firm quote.