Aluminum 5052-H32 Round Bar Weight
Mass per metre and per foot for aluminum 5052-h32 round bar 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 7.9 kg (17.7 lb per 20 ft).
At the reference dimensions (d = 25 mm) this section has a cross-sectional area of 490.9 mm², giving 1.316 kg/m (0.884 lb/ft). Against carbon steel's 7,850 kg/m³ that is -65.9 % — the same section in steel would be 3.853 kg/m.
Round Bar — formula and derivation
Area of a round bar
A = π/4 · d²
A = π/4 × d², where d is the outside diameter
Worked through with the default dimensions:
A = π/4 × d²A = 0.785398 × 25²A = 0.785398 × 625.0A = 490.9 mm²
- d
- Diameter — Outside diameter measured across the bar.
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 1.3155 kg/m for the reference size above.
AL 5052 round bar — size series
| Diameter | Cross-section | Mass / length |
|---|---|---|
| 6.0 mm | 28.27 mm² · 0.0438 in² | 0.076 kg/m · 0.051 lb/ft |
| 8.0 mm | 50.27 mm² · 0.0779 in² | 0.135 kg/m · 0.091 lb/ft |
| 10 mm | 78.54 mm² · 0.1217 in² | 0.210 kg/m · 0.141 lb/ft |
| 12 mm | 113.10 mm² · 0.1753 in² | 0.303 kg/m · 0.204 lb/ft |
| 14 mm | 153.94 mm² · 0.2386 in² | 0.413 kg/m · 0.277 lb/ft |
| 16 mm | 201.06 mm² · 0.3116 in² | 0.539 kg/m · 0.362 lb/ft |
| 20 mm | 314.16 mm² · 0.4869 in² | 0.842 kg/m · 0.566 lb/ft |
| 25 mm | 490.87 mm² · 0.7609 in² | 1.316 kg/m · 0.884 lb/ft |
| 30 mm | 706.86 mm² · 1.0956 in² | 1.894 kg/m · 1.273 lb/ft |
| 32 mm | 804.25 mm² · 1.2466 in² | 2.155 kg/m · 1.448 lb/ft |
| 40 mm | 1,256.64 mm² · 1.9478 in² | 3.368 kg/m · 2.263 lb/ft |
| 50 mm | 1,963.50 mm² · 3.0434 in² | 5.262 kg/m · 3.536 lb/ft |
| 60 mm | 2,827.43 mm² · 4.3825 in² | 7.578 kg/m · 5.092 lb/ft |
| 80 mm | 5,026.55 mm² · 7.7912 in² | 13.471 kg/m · 9.052 lb/ft |
| 100 mm | 7,853.98 mm² · 12.1737 in² | 21.049 kg/m · 14.144 lb/ft |
Computed for AL 5052 at 2680 kg/m³ (0.0968 lb/in³). ASTM B209 (H32 temper).
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.
Imperial sizes
Round Bar is also bought in inch sizes. The conversions below are exact (1 in = 25.4 mm by definition), so the metric equivalents are the true millimetre dimensions rather than a rounded nominal figure.
| Stock size | Metric equivalent mm | Cross-section | Mass / length |
|---|---|---|---|
| 1/8 in | 3.17 | 7.92 mm² · 0.0123 in² | 0.021 kg/m · 0.014 lb/ft |
| 3/16 in | 4.76 | 17.81 mm² · 0.0276 in² | 0.048 kg/m · 0.032 lb/ft |
| 1/4 in | 6.35 | 31.67 mm² · 0.0491 in² | 0.085 kg/m · 0.057 lb/ft |
| 5/16 in | 7.94 | 49.48 mm² · 0.0767 in² | 0.133 kg/m · 0.089 lb/ft |
| 3/8 in | 9.52 | 71.26 mm² · 0.1104 in² | 0.191 kg/m · 0.128 lb/ft |
| 1/2 in | 12.70 | 126.68 mm² · 0.1963 in² | 0.339 kg/m · 0.228 lb/ft |
| 5/8 in | 15.88 | 197.93 mm² · 0.3068 in² | 0.530 kg/m · 0.356 lb/ft |
| 3/4 in | 19.05 | 285.02 mm² · 0.4418 in² | 0.764 kg/m · 0.513 lb/ft |
| 7/8 in | 22.22 | 387.95 mm² · 0.6013 in² | 1.040 kg/m · 0.699 lb/ft |
| 1 in | 25.40 | 506.71 mm² · 0.7854 in² | 1.358 kg/m · 0.913 lb/ft |
| 1-1/4 in | 31.75 | 791.73 mm² · 1.2272 in² | 2.122 kg/m · 1.426 lb/ft |
| 1-1/2 in | 38.10 | 1,140.09 mm² · 1.7671 in² | 3.055 kg/m · 2.053 lb/ft |
| 2 in | 50.80 | 2,026.83 mm² · 3.1416 in² | 5.432 kg/m · 3.650 lb/ft |
| 2-1/2 in | 63.50 | 3,166.92 mm² · 4.9087 in² | 8.487 kg/m · 5.703 lb/ft |
| 3 in | 76.20 | 4,560.37 mm² · 7.0686 in² | 12.222 kg/m · 8.213 lb/ft |
| 4 in | 101.60 | 8,107.32 mm² · 12.5664 in² | 21.728 kg/m · 14.600 lb/ft |
Stock sizes in inches, converted exactly at 25.4 mm per inch. Material: Aluminum 5052-H32 at 2680 kg/m³.
The same round bar 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 | 3.853 | 2.589 | +0.0 % |
| Stainless Steel 304 | 8,000 | 0.2890 | 3.927 | 2.639 | +1.9 % |
| Stainless Steel 316 | 8,000 | 0.2890 | 3.927 | 2.639 | +1.9 % |
| Stainless Steel 316L | 8,000 | 0.2890 | 3.927 | 2.639 | +1.9 % |
| Stainless Steel 430 | 7,700 | 0.2782 | 3.780 | 2.540 | -1.9 % |
| Aluminum 6061-T6 | 2,700 | 0.0975 | 1.325 | 0.891 | -65.6 % |
| Aluminum 5052-H32 | 2,680 | 0.0968 | 1.316 | 0.884 | -65.9 % |
| Aluminum 7075-T6 | 2,810 | 0.1015 | 1.379 | 0.927 | -64.2 % |
| Copper C11000 | 8,940 | 0.3230 | 4.388 | 2.949 | +13.9 % |
| Brass C36000 | 8,500 | 0.3071 | 4.172 | 2.804 | +8.3 % |
| Bronze C93200 | 8,800 | 0.3179 | 4.320 | 2.903 | +12.1 % |
| Titanium Grade 2 | 4,510 | 0.1629 | 2.214 | 1.488 | -42.5 % |
| Gray Cast Iron | 7,200 | 0.2601 | 3.534 | 2.375 | -8.3 % |
| Lead | 11,340 | 0.4097 | 5.567 | 3.741 | +44.5 % |
| Rigid PVC (Type I) | 1,400 | 0.0506 | 0.687 | 0.462 | -82.2 % |
| HDPE (PE 100) | 960 | 0.0347 | 0.471 | 0.317 | -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 bar
Round bar is the only shape whose area grows with the square of a single dimension, so small diameter changes move weight much faster than intuition suggests: going from 25 mm to 28 mm — a 12 % diameter increase — raises the weight per metre by 25 %. This is why shaft stock is normally bought to the nearest preferred diameter rather than machined down from the next size up; the material saved is more than the weight table implies.
Specified by diameter only. For ground and polished stock, add the tolerance class and the straightness limit.
Download this data
AL 5052 round bar — 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 bar weigh?
At the reference dimensions (d = 25 mm) a aluminum 5052-h32 round bar of this size weighs 1.316 kg/m, or 0.884 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 bar calculated?
Weight is cross-sectional area × length × density. For this shape the area is A = π/4 · d². At the reference dimensions that gives 490.9 mm², and multiplying by aluminum 5052-h32's density of 2,680 kg/m³ gives 1.316 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 bar 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 bar?
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 490.9 mm² (0.7609 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 bar 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 bar 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 3.853 kg/m for comparison.
Other materials, same round bar
The same geometry in every material, so the only variable is density.
- Carbon steel round bar — 7850 kg/m³
- SS 304 round bar — 8000 kg/m³
- SS 316 round bar — 8000 kg/m³
- AL 6061 round bar — 2700 kg/m³
- Copper round bar — 8940 kg/m³
- Brass round bar — 8500 kg/m³
- HDPE round bar — 960 kg/m³
- PVC round bar — 1400 kg/m³
Other AL 5052 sections
The same density applied to every shape the site covers.
- 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 round tube — A = π/4 · (D² − d²), d = D − 2t
- 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 Bar area from A = π/4 · d². 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.