Aluminum 5052-H32 Round Tube Weight
Mass per metre and per foot for aluminum 5052-h32 round tube at 2,680 kg/m³ (ASTM B209 (H32 temper)). Every figure is for the section as drawn. A 6 m length of this size weighs 7.1 kg (16.0 lb per 20 ft).
At the reference dimensions (D = 50 mm, t = 3 mm) this section has a cross-sectional area of 443.0 mm², giving 1.187 kg/m (0.798 lb/ft). Against carbon steel's 7,850 kg/m³ that is -65.9 % — the same section in steel would be 3.477 kg/m.
Round Tube — formula and derivation
Area of a round tube
A = π/4 · (D² − d²), d = D − 2t
A = π/4 × (D² − d²), where D is the outside diameter, d the inside diameter, and d = D − 2t for wall thickness t
Worked through with the default dimensions:
A = π/4 × (D² − d²)d = 50 − 2 × 3 = 44.0 mmA = 0.785398 × (50² − 44.0²)A = 0.785398 × 564.0A = 443.0 mm²
- D
- Outside diameter
- t
- Wall thickness — Must be less than half the outside diameter.
Weight follows from the area with no further geometry: m = A × 10⁻⁶ × ρ, where A is in mm², ρ in kg/m³ and m in kg/m. At 2,680 kg/m³ that is 1.1871 kg/m for the reference size above.
AL 5052 round tube — size series
| Outside diameter | 1.0 | 1.5 | 2.0 | 3.0 | 4.0 | 5.0 | 6.0 | 8.0 |
|---|---|---|---|---|---|---|---|---|
| 12 mm | 0.093 kg/m · 0.062 lb/ft | 0.133 kg/m · 0.089 lb/ft | 0.168 kg/m · 0.113 lb/ft | 0.227 kg/m · 0.153 lb/ft | 0.269 kg/m · 0.181 lb/ft | 0.295 kg/m · 0.198 lb/ft | 0.303 kg/m · 0.204 lb/ft | 0.269 kg/m · 0.181 lb/ft |
| 16 mm | 0.126 kg/m · 0.085 lb/ft | 0.183 kg/m · 0.123 lb/ft | 0.236 kg/m · 0.158 lb/ft | 0.328 kg/m · 0.221 lb/ft | 0.404 kg/m · 0.272 lb/ft | 0.463 kg/m · 0.311 lb/ft | 0.505 kg/m · 0.339 lb/ft | 0.539 kg/m · 0.362 lb/ft |
| 20 mm | 0.160 kg/m · 0.107 lb/ft | 0.234 kg/m · 0.157 lb/ft | 0.303 kg/m · 0.204 lb/ft | 0.429 kg/m · 0.289 lb/ft | 0.539 kg/m · 0.362 lb/ft | 0.631 kg/m · 0.424 lb/ft | 0.707 kg/m · 0.475 lb/ft | 0.808 kg/m · 0.543 lb/ft |
| 25 mm | 0.202 kg/m · 0.136 lb/ft | 0.297 kg/m · 0.199 lb/ft | 0.387 kg/m · 0.260 lb/ft | 0.556 kg/m · 0.373 lb/ft | 0.707 kg/m · 0.475 lb/ft | 0.842 kg/m · 0.566 lb/ft | 0.960 kg/m · 0.645 lb/ft | 1.145 kg/m · 0.769 lb/ft |
| 32 mm | 0.261 kg/m · 0.175 lb/ft | 0.385 kg/m · 0.259 lb/ft | 0.505 kg/m · 0.339 lb/ft | 0.732 kg/m · 0.492 lb/ft | 0.943 kg/m · 0.634 lb/ft | 1.137 kg/m · 0.764 lb/ft | 1.313 kg/m · 0.883 lb/ft | 1.617 kg/m · 1.086 lb/ft |
| 40 mm | 0.328 kg/m · 0.221 lb/ft | 0.486 kg/m · 0.327 lb/ft | 0.640 kg/m · 0.430 lb/ft | 0.935 kg/m · 0.628 lb/ft | 1.212 kg/m · 0.815 lb/ft | 1.473 kg/m · 0.990 lb/ft | 1.718 kg/m · 1.154 lb/ft | 2.155 kg/m · 1.448 lb/ft |
| 50 mm | 0.413 kg/m · 0.277 lb/ft | 0.613 kg/m · 0.412 lb/ft | 0.808 kg/m · 0.543 lb/ft | 1.187 kg/m · 0.798 lb/ft | 1.549 kg/m · 1.041 lb/ft | 1.894 kg/m · 1.273 lb/ft | 2.223 kg/m · 1.494 lb/ft | 2.829 kg/m · 1.901 lb/ft |
| 63 mm | 0.522 kg/m · 0.351 lb/ft | 0.777 kg/m · 0.522 lb/ft | 1.027 kg/m · 0.690 lb/ft | 1.516 kg/m · 1.018 lb/ft | 1.987 kg/m · 1.335 lb/ft | 2.442 kg/m · 1.641 lb/ft | 2.879 kg/m · 1.935 lb/ft | 3.705 kg/m · 2.489 lb/ft |
| 76 mm | 0.631 kg/m · 0.424 lb/ft | 0.941 kg/m · 0.632 lb/ft | 1.246 kg/m · 0.837 lb/ft | 1.844 kg/m · 1.239 lb/ft | 2.425 kg/m · 1.629 lb/ft | 2.989 kg/m · 2.008 lb/ft | 3.536 kg/m · 2.376 lb/ft | 4.580 kg/m · 3.078 lb/ft |
| 89 mm | 0.741 kg/m · 0.498 lb/ft | 1.105 kg/m · 0.743 lb/ft | 1.465 kg/m · 0.984 lb/ft | 2.172 kg/m · 1.460 lb/ft | 2.863 kg/m · 1.924 lb/ft | 3.536 kg/m · 2.376 lb/ft | 4.193 kg/m · 2.817 lb/ft | 5.456 kg/m · 3.666 lb/ft |
| 114 mm | 0.951 kg/m · 0.639 lb/ft | 1.421 kg/m · 0.955 lb/ft | 1.886 kg/m · 1.267 lb/ft | 2.804 kg/m · 1.884 lb/ft | 3.705 kg/m · 2.489 lb/ft | 4.589 kg/m · 3.083 lb/ft | 5.456 kg/m · 3.666 lb/ft | 7.140 kg/m · 4.798 lb/ft |
| 168 mm | 1.406 kg/m · 0.945 lb/ft | 2.103 kg/m · 1.413 lb/ft | 2.795 kg/m · 1.878 lb/ft | 4.168 kg/m · 2.801 lb/ft | 5.523 kg/m · 3.711 lb/ft | 6.862 kg/m · 4.611 lb/ft | 8.184 kg/m · 5.499 lb/ft | 10.777 kg/m · 7.242 lb/ft |
Rows: outside diameter (mm). Columns: wall thickness (mm). Computed for Aluminum 5052-H32 at 2680 kg/m³.
| Outside diameter | 1.0 | 1.5 | 2.0 | 3.0 | 4.0 | 5.0 | 6.0 | 8.0 |
|---|---|---|---|---|---|---|---|---|
| 12 mm | 34.6 | 49.5 | 62.8 | 84.8 | 100.5 | 110.0 | 113.1 | 100.5 |
| 16 mm | 47.1 | 68.3 | 88.0 | 122.5 | 150.8 | 172.8 | 188.5 | 201.1 |
| 20 mm | 59.7 | 87.2 | 113.1 | 160.2 | 201.1 | 235.6 | 263.9 | 301.6 |
| 25 mm | 75.4 | 110.7 | 144.5 | 207.3 | 263.9 | 314.2 | 358.1 | 427.3 |
| 32 mm | 97.4 | 143.7 | 188.5 | 273.3 | 351.9 | 424.1 | 490.1 | 603.2 |
| 40 mm | 122.5 | 181.4 | 238.8 | 348.7 | 452.4 | 549.8 | 640.9 | 804.2 |
| 50 mm | 153.9 | 228.6 | 301.6 | 443.0 | 578.1 | 706.9 | 829.4 | 1,055.6 |
| 63 mm | 194.8 | 289.8 | 383.3 | 565.5 | 741.4 | 911.1 | 1,074.4 | 1,382.3 |
| 76 mm | 235.6 | 351.1 | 465.0 | 688.0 | 904.8 | 1,115.3 | 1,319.5 | 1,709.0 |
| 89 mm | 276.5 | 412.3 | 546.6 | 810.5 | 1,068.1 | 1,319.5 | 1,564.5 | 2,035.8 |
| 114 mm | 355.0 | 530.1 | 703.7 | 1,046.2 | 1,382.3 | 1,712.2 | 2,035.8 | 2,664.1 |
| 168 mm | 524.6 | 784.6 | 1,043.0 | 1,555.1 | 2,060.9 | 2,560.4 | 3,053.6 | 4,021.2 |
Area is a property of the geometry alone, so this table is the same for every material. It is what you enter into a stress calculation; the mass table is what you enter into an order.
Each row is one nominal size. Because the area is computed from your dimensions rather than read from a mill table, a non-standard size is just as accurate — put it into the calculator above rather than interpolating between rows.
The same round tube in every material
Geometry is fixed and only density changes, so this table is the whole material-selection question in one view. Aluminum 5052-H32 is highlighted. The percentage column is against carbon steel, which is the figure most quotations are built on.
| Material | Density kg/m³ | lb/in³ | Mass / length kg/m | lb/ft | vs carbon steel |
|---|---|---|---|---|---|
| Carbon Steel | 7,850 | 0.2836 | 3.477 | 2.337 | +0.0 % |
| Stainless Steel 304 | 8,000 | 0.2890 | 3.544 | 2.381 | +1.9 % |
| Stainless Steel 316 | 8,000 | 0.2890 | 3.544 | 2.381 | +1.9 % |
| Stainless Steel 316L | 8,000 | 0.2890 | 3.544 | 2.381 | +1.9 % |
| Stainless Steel 430 | 7,700 | 0.2782 | 3.411 | 2.292 | -1.9 % |
| Aluminum 6061-T6 | 2,700 | 0.0975 | 1.196 | 0.804 | -65.6 % |
| Aluminum 5052-H32 | 2,680 | 0.0968 | 1.187 | 0.798 | -65.9 % |
| Aluminum 7075-T6 | 2,810 | 0.1015 | 1.245 | 0.836 | -64.2 % |
| Copper C11000 | 8,940 | 0.3230 | 3.960 | 2.661 | +13.9 % |
| Brass C36000 | 8,500 | 0.3071 | 3.765 | 2.530 | +8.3 % |
| Bronze C93200 | 8,800 | 0.3179 | 3.898 | 2.619 | +12.1 % |
| Titanium Grade 2 | 4,510 | 0.1629 | 1.998 | 1.342 | -42.5 % |
| Gray Cast Iron | 7,200 | 0.2601 | 3.189 | 2.143 | -8.3 % |
| Lead | 11,340 | 0.4097 | 5.023 | 3.375 | +44.5 % |
| Rigid PVC (Type I) | 1,400 | 0.0506 | 0.620 | 0.417 | -82.2 % |
| HDPE (PE 100) | 960 | 0.0347 | 0.425 | 0.286 | -87.8 % |
Same geometry throughout, so the only variable is density. Carbon steel is highlighted as the baseline.
A note on using this table for costing: mass is not price. Aluminium is roughly a third of steel's mass here, but per kilogram it costs several times more, so a straight swap rarely saves money — what it buys is reduced load on a structure or a vehicle.
About aluminum 5052-h32
The highest-strength common non-heat-treatable alloy and the best of the sheet alloys for marine service, with roughly twice the corrosion resistance of 6061 in salt water. Its 2,680 kg/m³ is marginally below 6061 — a 0.7 % difference, invisible on a take-off but real. It work-hardens rather than age-hardens, so it cannot be strengthened after forming and is normally supplied in H32. Preferred for fuel tanks, hull plate and formed panels that will see chloride.
- Density
- 2,680 kg/m³ = 0.0968 lb/in³ · 0.3414× carbon steel · typical spread ±1 %
- Specification
- ASTM B209 (H32 temper)
- Equivalents
- EN AW-5052 · JIS A5052 · GB 5052
- Typical uses
- Marine hulls and tanks · Fuel and hydraulic tanks · Sheet metal enclosures · Pressure vessels (low)
About round tube
Hollow sections are the most efficient way to buy stiffness by weight, and the numbers are stark: a 50 mm outside diameter tube with a 3 mm wall has the same area as a 22.6 mm solid bar — about 20 % of the mass — but its second moment of area is roughly 2.4 times larger. The catch is local: a thin wall buckles and dents long before it yields, so tube is chosen for stiffness and stability, never for where impact or crushing is expected.
Specified as outside diameter × wall thickness. State the standard (e.g. EN 10219) and whether the tube is welded or seamless.
Download this data
AL 5052 round tube — CSV
Both buttons below read the tables rendered on this page, so the file matches what you are looking at. The full catalogue — all 16 materials across all 10 sections — is on the downloads page.
Fields are quoted per RFC 4180, with a UTF-8 byte-order mark so Excel reads the mm² and · characters correctly. Blank lines separate the weight matrix from the area matrix.
Frequently asked questions
How much does aluminum 5052-h32 round tube weigh?
At the reference dimensions (D = 50 mm, t = 3 mm) a aluminum 5052-h32 round tube of this size weighs 1.187 kg/m, or 0.798 lb/ft. The table above lists the figure for every standard size so you can read your size directly instead of scaling.
How is the weight of round tube calculated?
Weight is cross-sectional area × length × density. For this shape the area is A = π/4 · (D² − d²), d = D − 2t. At the reference dimensions that gives 443.0 mm², and multiplying by aluminum 5052-h32's density of 2,680 kg/m³ gives 1.187 kg/m. Nothing is looked up in a table — which is why a non-standard size is calculated just as accurately as a standard one.
Why does aluminum 5052-h32 weigh more or less than steel?
It is lighter than carbon steel for the same section — about 66 % lighter at 2,680 kg/m³. Density is the only variable: the cross-sectional area depends purely on geometry, so a round tube of the same dimensions has the same area in every material and the mass simply scales with density. In this case the ratio is 0.3414× carbon steel.
What is the cross-sectional area of a round tube?
The area depends only on the dimensions, not on the material, so it is identical whichever material you select: at the reference dimensions it is 443.0 mm² (0.6866 in²). That is the number you would enter into a stress or deflection calculation, and it is why changing material on this page never changes the area column.
Does a al 5052 round tube weigh the same as a al 5052 part of a different shape?
No, and the difference is larger than most people expect. At equal nominal size, a square bar is 27.3 % heavier than a round bar, and a hollow section is typically 60–80 % lighter than the solid bar it replaces. Weight follows area, and area changes faster than dimensions do — which is exactly why this needs calculating rather than estimating.
Should I use AL 5052 weight or carbon steel weight for costing?
Use the material you are actually buying. At 2,680 kg/m³ against carbon steel's 7,850 kg/m³, the same round tube differs by 65.9 % in mass. On a per-metre quote that is invisible; on a fabricated tonnage it is the difference between a margin and a loss. This page computes the steel figure as 3.477 kg/m for comparison.
Other materials, same round tube
The same geometry in every material, so the only variable is density.
- Carbon steel round tube — 7850 kg/m³
- SS 304 round tube — 8000 kg/m³
- SS 316 round tube — 8000 kg/m³
- AL 6061 round tube — 2700 kg/m³
- Copper round tube — 8940 kg/m³
- Brass round tube — 8500 kg/m³
- HDPE round tube — 960 kg/m³
- PVC round tube — 1400 kg/m³
Other AL 5052 sections
The same density applied to every shape the site covers.
- AL 5052 round bar — A = π/4 · d²
- AL 5052 square bar — A = a²
- AL 5052 hexagonal bar — A = (√3/2) · AF² ≈ 0.8660 · AF²
- AL 5052 flat bar — A = w · t
- AL 5052 plate — A = w · t
- AL 5052 square tube — A = a² − (a − 2t)²
Reference data and tools
- Metal weight overview — how the calculation works
- All 16 materials — densities and specifications
- All 10 sections — formulas and size series
- Density chart — lightest to heaviest
- Metal weight calculator — any size, any material
- All calculators — metal weight and pipe weight
- Download the data — CSV, generated from the same source
- Cross-reference tables — DN / NPS / material equivalents
- Methodology and sources — where every number comes from
Round Tube area from A = π/4 · (D² − d²), d = D − 2t. Mass computed as area × length × density at 2,680 kg/m³ (ASTM B209 (H32 temper)). No weight on this page is copied from a published table — which is why figures can differ in the last significant digit from a mill's chart calculated at a nominal density.
- Elementary plane geometry. The circle, polygon and hollow-section area formulas.
- ASTM material specifications for each grade named in the material entry (A36, A240/A276, B209/B211/B221, B152/B16/B505, B265/B348, A48, B29, D1784, D3350).
- BIPM / NIST definitional constants: international inch = 25.4 mm, foot = 0.3048 m, pound = 0.45359237 kg.
Dataset version 2026.09.1 · dimensions last verified against source 2026-09-21. Found an error? Report it — corrections are issued with a version bump.