Brass Coil Weight Calculator
Brass (copper-zinc alloy) has a density of about 8.53 g/cm³ - between copper and steel. Brass strip coils are common in hardware, ammunition, musical instruments and decorative applications, usually in narrow slit widths.
This is an interactive calculator; enable JavaScript to use it. Enter coil OD, ID and width to get weight in kg/tonnes, plus strip length if thickness is given.
Typical Brass Coil Specifications
| Density | 8.53 g/cm³ (varies slightly by alloy) |
| Common thickness | 0.1–2mm strip |
| Common coil ID | 300mm or 406mm |
| Typical coil weight | 0.5–3 tonnes |
Example: a brass coil with 900mm OD, 406mm ID and 400mm width weighs about π/4 × (900² − 406²) × 400 × 8.53 × 10⁻⁶ ≈ 1.7 tonnes.
Coil Weight Formula
Weight (kg) = π/4 × (OD² − ID²) × Width × Density × 10⁻⁶ - with OD, ID and Width in millimetres and density in g/cm³.
Frequently Asked Questions
Does brass alloy composition affect coil weight?
Slightly. Common brass grades range from about 8.4 to 8.7 g/cm³ depending on zinc content. This calculator uses 8.53 g/cm³ (70/30 cartridge brass); the variation is within ±2%.
What equipment slits brass coils?
Precision slitting lines with fine tension control - brass is softer than steel and marks easily, so lines use polished rolls and careful strip handling similar to copper processing.