Aluminium coil weight calculator
Enter strip thickness, width and the coil’s inner and outer diameter to get coil weight and total strip length. For 5xxx and 1xxx coil used in hull lining, deck tread and superstructure cladding.
Coil dimensions
Material
A coil is a ring of wound strip. The ring cross-section times the strip width gives the volume; the same weight also comes out of the developed strip length.
L (m) = π (OD² − ID²) / (4 t) / 1000W (kg) = π/4 × (OD² − ID²) × width × ρ / 109
| Parameter | Common value |
|---|---|
| Core ID | 505 / 508 / 610 mm |
| Mill coil OD (max) | 1,800 – 2,000 mm |
| Strip width | 1,000 – 1,500 mm |
| Strip thickness | 0.5 – 8 mm |
| Coil weight | 2 – 8 t |
- Slit coil is priced per tonne, not per metre — convert with the metres-per-tonne figure before comparing quotes.
- Tell us the core ID you need (505 / 508 / 610 mm) at enquiry stage; re-coring after slitting adds cost.
- If your line only takes small coils, say the maximum weight — we can split a mother coil rather than ship one heavy unit.
People also ask
Why does strip thickness not appear in the weight formula?
Because it cancels out. A thicker strip makes the coil shorter for the same ring volume, so volume — and weight — stay the same. Thickness only sets the strip length.
What is a normal coil weight for marine work?
2–8 t for slit coil. Mother coils from the mill run heavier; slit daughter coils are usually 2–5 t so they can be handled by a standard forklift or coil hook.
How accurate is the OD / ID method?
Within about 1–3%. The gap comes from winding tension, interleaving paper or oil film, and edge burr. For commercial settlement, weigh the coil on a certified scale.
Can you supply coil in 5083 or 5052?
Yes — 5083, 5086, 5754, 5052 and 5059 in coil and slit strip, plus 1100 and 3003 for non-structural lining. Widths from 1.5 mm slit upwards.
What is the difference between coil and sheet?
Same alloy and thickness range; coil is supplied wound, sheet is supplied flat cut to length. Coil suits continuous processing lines, sheet suits one-off fabrication.
Do you supply a mill certificate with coil?
Yes. Every batch ships with an EN 10204 3.1 mill certificate. Our partner mill holds DNV approval for 5083 in H116/H321. See certifications.
Need plate to match these numbers?
Reply in one working day with stock availability and a firm price.
