bronze square tube weight calculator

Enter the dimensions of a bronze square tube and this works out its volume and weight. C932 bearing bronze (SAE 660). Phosphor bronze C510 is nearer 8860.

Outside side

Wall thickness

Length

Number of pieces

Total weight

4.9632kg

= Exact bronze square tube weight Show in

Weight of one square tube: 4.9632
Volume of one piece: 564
Weight per metre of length: 4.9632 kg/m
Density used: 8800 kg/m3

Show the working

Outside side = 50
Wall thickness = 3
Length = 1000
Number of pieces = 1
volume_mm3 = (50^2 - (50 - 2*3)^2) * 1000 = 564 000
Volume of one piece = 564 000 / 1000 = 564
Density used = 8800 = 8800
Weight of one square tube = 564 000 * 8800 / 1e9 = 4.9632
Total weight = 4.9632 * 1 = 4.9632
Weight per metre of length = 564 000 / 1000 * 1000 * 8800 / 1e9 = 4.9632

Values are shown to six significant figures here; the arithmetic itself runs on exact fractions and is only rounded where a number is printed.

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The formula

Volume = (side^2 - inner side^2) x length, ignoring the corner radii
Weight = volume x density, with density = 8800 kg/m3
One cubic millimetre of a material at 1000 kg/m3 weighs exactly one milligram, so the millimetre-to-kilogram step is a shift of the decimal point rather than a rounded factor.

C932 bearing bronze (SAE 660). Phosphor bronze C510 is nearer 8860.

Dimensions are nominal. Mill tolerances on thickness, and the corner radii on formed sections, both move the real weight by a percent or two.

Every field takes inches or feet as readily as millimetres: change the unit next to it and the conversion is done exactly before the arithmetic starts.

Frequently asked

What is the density of bronze?

8800 kg/m3, which is 8.800 g/cm3. C932 bearing bronze (SAE 660). Phosphor bronze C510 is nearer 8860.

How do you calculate the weight of a bronze square tube?

Volume = (side^2 - inner side^2) x length, ignoring the corner radii. Multiply the volume by the density of bronze, 8800 kg/m3, taking care that both are in the same unit system.

Can I enter dimensions in inches?

Yes. Each dimension field has its own unit selector, and inch, foot, millimetre, centimetre and metre entries are all converted exactly before anything is multiplied.

Where the numbers come from

Densities are nominal room-temperature values for the grade named, drawn from the usual mill and handbook figures.