The weight of the solid square iron is found by the square of the edge measure × the density. You can calculate for steel, stainless steel (304, 316), aluminum, copper, brass, bronze, cast iron and other metals, and enter the density yourself for the material that is not listed.
Formula
Meter weight (kg/m) = a² × Density ÷ 1000
Example
The meter weight of 20 × 20 mm steel square iron is 3.14 kg/m.