What Does This Tube Weigh?
The steel tube weight calculator gives weight per foot, per length and per order for square, rectangular and round tube. Standard sizes show the published weight.
Calculator
- Weight per foot
- Each length
- Total
How the Weight Is Figured.
Weight is the steel in the cross-section times its length. Steel weighs 0.2836 pounds per cubic inch, so each square inch of section weighs 3.40 pounds per foot.
A500 weights allow for rounded corners: an outside radius of twice the wall and an inside radius of one wall. A513 tables figure square corners, so A513 weights run about 2 to 3% heavier for the same size. Round tube is the same either way.
For a size on our standard list, the calculator shows the weight from our published table instead of the formula; the two agree within about half a percent.
Round: lb/ft = 10.68 x wall x (OD - wall)
Square and rectangle (square corners): lb/ft = 6.81 x wall x (A + B - 2 x wall)
Questions
How much does 2 x 2 x 11 gauge tube weigh?
2 x 2 square tube with an 11 gauge (.120 in) wall weighs 2.944 pounds per foot as A500, so a 24 foot length weighs about 70.7 pounds.
Why does my supplier show a different weight?
Most charts are either A500 (rounded corners) or A513 (square corners), and some use 0.2833 or 0.2840 lb per cubic inch for steel. The difference is usually 1 to 3 percent.
Is galvanized tube heavier?
Slightly, from the zinc coating. The weights here are for bare steel; ask us for shipping weights on galvanized tube.
Can I order a size that is not on the list?
Ask us. The standard list covers what the mill runs most, from 2 x 2 to 4 x 4 square and equivalent rectangles, and round from 1.900 to 8.000 OD. We also make squares from 1-1/2 to 6 inch and rectangles to 10 x 2.