SpecBase

Bronze C93200 Hexagonal Bar Weight

Mass per metre and per foot for bronze c93200 hexagonal bar at 8,800 kg/m³ (ASTM B505 (UNS C93200, bearing bronze)). Every figure is for the section as drawn. A 6 m length of this size weighs 26.3 kg (59.0 lb per 20 ft).

Mass / length
4.390kg/m
2.950 lb/ft
Cross-section
498.8mm²
0.7732 in²
Reference size
24mm
AF
Density
8,800kg/m³
0.3179 lb/in³
6 m / 20 ft length
26.3kg
59.0 lb

At the reference dimensions (AF = 24 mm) this section has a cross-sectional area of 498.8 mm², giving 4.390 kg/m (2.950 lb/ft). Against carbon steel's 7,850 kg/m³ that is +12.1 % — the same section in steel would be 3.916 kg/m.

Calculate your own dimensions → Pipe and hollow sections

Hexagonal Bar — formula and derivation

Area of a hexagonal bar

A = (√3/2) · AF² ≈ 0.8660 · AF²

A = (√3/2) × AF², where AF is the distance across flats (the wrench size), not across corners

Worked through with the default dimensions:

A = (√3/2) × AF²A = 0.866025 × 24²A = 0.866025 × 576.0A = 498.8 mm²
AF
Across flats (AF) — Distance between opposite flats — the size a spanner grips. Hex bar is ordered by AF, not by corner-to-corner.

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 8,800 kg/m³ that is 4.3897 kg/m for the reference size above.

Bronze hexagonal bar — size series

Bronze C93200 hexagonal bar — by across flats (af)
Across flats (AF) Cross-section Mass / length
5.0 mm 21.65 mm² · 0.0336 in² 0.191 kg/m · 0.128 lb/ft
6.0 mm 31.18 mm² · 0.0483 in² 0.274 kg/m · 0.184 lb/ft
8.0 mm 55.43 mm² · 0.0859 in² 0.488 kg/m · 0.328 lb/ft
10 mm 86.60 mm² · 0.1342 in² 0.762 kg/m · 0.512 lb/ft
12 mm 124.71 mm² · 0.1933 in² 1.097 kg/m · 0.737 lb/ft
14 mm 169.74 mm² · 0.2631 in² 1.494 kg/m · 1.004 lb/ft
17 mm 250.28 mm² · 0.3879 in² 2.202 kg/m · 1.480 lb/ft
19 mm 312.64 mm² · 0.4846 in² 2.751 kg/m · 1.849 lb/ft
22 mm 419.16 mm² · 0.6497 in² 3.689 kg/m · 2.479 lb/ft
24 mm 498.83 mm² · 0.7732 in² 4.390 kg/m · 2.950 lb/ft
27 mm 631.33 mm² · 0.9786 in² 5.556 kg/m · 3.733 lb/ft
32 mm 886.81 mm² · 1.3746 in² 7.804 kg/m · 5.244 lb/ft
36 mm 1,122.37 mm² · 1.7397 in² 9.877 kg/m · 6.637 lb/ft
41 mm 1,455.79 mm² · 2.2565 in² 12.811 kg/m · 8.609 lb/ft
46 mm 1,832.51 mm² · 2.8404 in² 16.126 kg/m · 10.836 lb/ft
50 mm 2,165.06 mm² · 3.3559 in² 19.053 kg/m · 12.803 lb/ft

Computed for Bronze at 8800 kg/m³ (0.3179 lb/in³). ASTM B505 (UNS C93200, bearing bronze).

How to read this table

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

Hexagonal 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.

Bronze — common inch hex bar (across flats)
Stock size Metric equivalent mm Cross-section Mass / length
1/4 in 6.35 34.92 mm² · 0.0541 in² 0.307 kg/m · 0.206 lb/ft
5/16 in 7.94 54.56 mm² · 0.0846 in² 0.480 kg/m · 0.323 lb/ft
3/8 in 9.52 78.57 mm² · 0.1218 in² 0.691 kg/m · 0.465 lb/ft
7/16 in 11.11 106.94 mm² · 0.1658 in² 0.941 kg/m · 0.632 lb/ft
1/2 in 12.70 139.68 mm² · 0.2165 in² 1.229 kg/m · 0.826 lb/ft
9/16 in 14.29 176.78 mm² · 0.2740 in² 1.556 kg/m · 1.045 lb/ft
5/8 in 15.88 218.25 mm² · 0.3383 in² 1.921 kg/m · 1.291 lb/ft
3/4 in 19.05 314.28 mm² · 0.4871 in² 2.766 kg/m · 1.858 lb/ft
7/8 in 22.22 427.77 mm² · 0.6631 in² 3.764 kg/m · 2.530 lb/ft
1 in 25.40 558.72 mm² · 0.8660 in² 4.917 kg/m · 3.304 lb/ft
1-1/4 in 31.75 873.01 mm² · 1.3532 in² 7.682 kg/m · 5.162 lb/ft
1-1/2 in 38.10 1,257.13 mm² · 1.9486 in² 11.063 kg/m · 7.434 lb/ft
2 in 50.80 2,234.90 mm² · 3.4641 in² 19.667 kg/m · 13.216 lb/ft

Stock sizes in inches, converted exactly at 25.4 mm per inch. Material: Bronze C93200 at 8800 kg/m³.

The same hexagonal bar in every material

Geometry is fixed and only density changes, so this table is the whole material-selection question in one view. Bronze C93200 is highlighted. The percentage column is against carbon steel, which is the figure most quotations are built on.

Hexagonal Bar at AF = 24 mm — mass in every material
Material Density kg/m³ lb/in³ Mass / length kg/m lb/ft vs carbon steel
Carbon Steel 7,850 0.2836 3.916 2.631 +0.0 %
Stainless Steel 304 8,000 0.2890 3.991 2.682 +1.9 %
Stainless Steel 316 8,000 0.2890 3.991 2.682 +1.9 %
Stainless Steel 316L 8,000 0.2890 3.991 2.682 +1.9 %
Stainless Steel 430 7,700 0.2782 3.841 2.581 -1.9 %
Aluminum 6061-T6 2,700 0.0975 1.347 0.905 -65.6 %
Aluminum 5052-H32 2,680 0.0968 1.337 0.898 -65.9 %
Aluminum 7075-T6 2,810 0.1015 1.402 0.942 -64.2 %
Copper C11000 8,940 0.3230 4.460 2.997 +13.9 %
Brass C36000 8,500 0.3071 4.240 2.849 +8.3 %
Bronze C93200 8,800 0.3179 4.390 2.950 +12.1 %
Titanium Grade 2 4,510 0.1629 2.250 1.512 -42.5 %
Gray Cast Iron 7,200 0.2601 3.592 2.413 -8.3 %
Lead 11,340 0.4097 5.657 3.801 +44.5 %
Rigid PVC (Type I) 1,400 0.0506 0.698 0.469 -82.2 %
HDPE (PE 100) 960 0.0347 0.479 0.322 -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 bronze c93200

Tin-lead bearing bronze, the standard material for plain bushes and wear plates because its microstructure carries a soft lead phase that acts as a built-in lubricant. At 8,800 kg/m³ it sits between copper and brass, and being a cast alloy its density genuinely varies more than the wrought metals — 8,700 to 9,000 kg/m³ is normal across bronze chemistries, so a take-off on a large cast bush should come from the caster’s certificate, not from a table.

Density
8,800 kg/m³ = 0.3179 lb/in³ · 1.1210× carbon steel · typical spread ±3 %
Specification
ASTM B505 (UNS C93200, bearing bronze)
Equivalents
SAE 660 · EN CW458K · GB ZQSn6-6-3
Typical uses
Plain bearings and bushes · Worm gears · Pump and valve components · Wear plates
Weight-relevant caution

Cast alloys carry higher density uncertainty than wrought. Typical spread 8,700–9,000 kg/m³.

About hexagonal bar

Hex bar is the one shape where the ordering dimension is not the dimension the formula wants. Stock is sold by across-flats (AF) because that is what the wrench grips, but the area formula needs AF as well — and the two are easy to confuse once a drawing quotes across-corners instead. Across-corners is a factor of 2/√3 (1.1547) larger than AF, so mixing them up inflates the calculated weight by 33 %. Always check which one the drawing calls out.

When ordering

Specified by across-flats. Say so explicitly on the order — "across corners" gives a different bar.

Download this data

Bronze hexagonal 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.

All materials (CSV · 16 × 10 pages)

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 bronze c93200 hexagonal bar weigh?

At the reference dimensions (AF = 24 mm) a bronze c93200 hexagonal bar of this size weighs 4.390 kg/m, or 2.950 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 hexagonal bar calculated?

Weight is cross-sectional area × length × density. For this shape the area is A = (√3/2) · AF² ≈ 0.8660 · AF². At the reference dimensions that gives 498.8 mm², and multiplying by bronze c93200's density of 8,800 kg/m³ gives 4.390 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 bronze c93200 weigh more or less than steel?

It is heavier than carbon steel for the same section — about 12 % heavier at 8,800 kg/m³. Density is the only variable: the cross-sectional area depends purely on geometry, so a hexagonal 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 1.1210× carbon steel.

What is the cross-sectional area of a hexagonal 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 498.8 mm² (0.7732 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 bronze hexagonal bar weigh the same as a bronze 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 Bronze weight or carbon steel weight for costing?

Use the material you are actually buying. At 8,800 kg/m³ against carbon steel's 7,850 kg/m³, the same hexagonal bar differs by 12.1 % 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 3.916 kg/m for comparison.

Other materials, same hexagonal bar

The same geometry in every material, so the only variable is density.

Other Bronze sections

The same density applied to every shape the site covers.

Reference data and tools

Data source and method

Hexagonal Bar area from A = (√3/2) · AF² ≈ 0.8660 · AF². Mass computed as area × length × density at 8,800 kg/m³ (ASTM B505 (UNS C93200, bearing bronze)). 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.