Steel weight calculator
Mass of sheet, bar, tube, angle and channel from the dimensions — for the delivery note, the lifting plan and the quote.
How it is worked out
Cross-sectional area from the dimensions, multiplied by length and by density. The densities used are 7.85 g/cm³ for carbon steel, 7.9 g/cm³ for austenitic stainless, 2.70 for aluminium, 8.96 for copper, 8.5 for brass, 4.51 for titanium and 7.2 for cast iron.
Rolling tolerances mean the real piece is normally within a couple of per cent of the calculated figure. That is close enough for ordering and for a lifting check with a proper safety factor; it is not close enough to settle an invoice, which is what the weighbridge is for.
Before you lift it
A 6-metre length of 100×100×10 angle looks manageable and weighs about 90 kg. Half of the accidents around fabrication happen with material that was underestimated by eye. Work the mass out first, then decide whether it is a two-person lift.
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