How this calculator works
The alloy menu uses thyssenkrupp density data, ranging from 2650 kg/m3 for 5083 to 2800 kg/m3 for 7075. Aluminium 1050 is 2710 kg/m3 in that source. Use custom density for an unlisted alloy, casting or molten metal; this menu describes solid stock.
Formula
Vpiece = face area x thickness; Vbatch = quantity x Vpiece; mass = density x Vbatch; thickness = mass / (density x quantity x face area). Circular area = pi x diameter^2 / 4. Hollow sections subtract the inner section. Sphere V = pi x D^3 / 6; torus V = 2 x pi^2 x R x r^2. Can V = annulus area x overall height + inner area x (base + lid thickness).
Worked example
A 2 m by 1 m plate, 10 mm thick, has 0.02 m3 volume. At an indicative 2700 kg/m3 it weighs 54 kg, or 108 kg for two.
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Frequently asked questions
Are alloy densities exact?
They are reference values for estimating solid stock. Temperature, composition and porosity can change density; use the material certificate when mass tolerance matters.
How do I enter a wire?
Choose circular disk / round bar, enter the wire diameter and use thickness / axial length for its total length.
Can I use melted aluminium?
Choose custom density from the melt supplier at the relevant temperature. Solid alloy density is not suitable for a molten bath.