Material density table

Density of steel, stainless, aluminium, copper, brass and more — in g/cm³ and kg/m³.

Material	g/cm³	kg/m³
Lead	11.34	11,340
Copper	8.96	8,960
Bronze	8.80	8,800
Brass	8.50	8,500
Stainless 316	8.00	8,000
Stainless 304	7.90	7,900
Steel (S235/S355)	7.85	7,850
Cast iron	7.20	7,200
Zinc	7.14	7,140
Titanium	4.51	4,510
Aluminium	2.70	2,700

Nominal densities; actual values vary slightly by alloy and treatment. 1 g/cm³ = 1000 kg/m³.

What is density used for?

The density (mass per volume) determines a part's weight: weight = volume × density. Steel is around 7.85 g/cm³, aluminium 2.7 and copper 8.96. For plates, bars and profiles you can quickly work out the weight — handy for quotes, transport and design.

Frequently asked questions

What is the density of steel?

Structural steel about 7.85 g/cm³ (7850 kg/m³). Stainless 304 around 7.9 and 316 around 8.0 g/cm³.

How do I convert g/cm³ to kg/m³?

Multiply by 1000: 7.85 g/cm³ = 7850 kg/m³.

Why does actual weight differ?

Alloy, rolling tolerances and surface treatment give a few percent difference from the nominal density.