Which metals can be found in the form of coils
Let’s start by listing the densities of the most common metals that can be purchased in coil form. These values will allow us to obtain the length of the coil knowing the dimensions of the strip and its weight.
| MATERIAL | DENSITY (g/cm³) |
| Steels | 7.85 |
| Stainless steels | 7.90 |
| Aluminium | 2.70 |
| Copper | 8.93 |
| Zinc-titanium | 7.20 |
Density variations in coated, painted, or alloy steels (high-strength, galvanized, self-passivating, wear-resistant) are very small and can be ignored.
How to calculate the length and weight of a sheet metal coil
The geometry of the coil depends on certain factors such as internal diameter, external diameter and width. The inside diameter depends on the recoiler and usually has one of these standard values:
- 152 mm
- 254 mm
- 305 mm
- 406 mm
- 508 mm
- 610 mm
Width can be trimmed on request, but is usually in one of the standard sizes: 1000, 1250, or 1500 mm.
Internal diameter ID [mm]:
External diameter OD [mm]:
Density D
Thickness T [mm]:
Width W [mm]:
External diameter OD [mm]:
Density D
Thickness T [mm]:
Width W [mm]:
