SpecBase

Titanium Grade 2 Hexagonal Bar Weight

Mass per metre and per foot for titanium grade 2 hexagonal bar at 4,510 kg/m³ (ASTM B265 / B348 (UNS R50400)). Every figure is for the section as drawn. A 6 m length of this size weighs 13.5 kg (30.2 lb per 20 ft).

Mass / length
2.250kg/m
1.512 lb/ft
Cross-section
498.8mm²
0.7732 in²
Reference size
24mm
AF
Density
4,510kg/m³
0.1629 lb/in³
6 m / 20 ft length
13.5kg
30.2 lb

At the reference dimensions (AF = 24 mm) this section has a cross-sectional area of 498.8 mm², giving 2.250 kg/m (1.512 lb/ft). Against carbon steel's 7,850 kg/m³ that is -42.5 % — 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 4,510 kg/m³ that is 2.2497 kg/m for the reference size above.

Ti Gr 2 hexagonal bar — size series

Titanium Grade 2 hexagonal bar — by across flats (af)
Across flats (AF) Cross-section Mass / length
5.0 mm 21.65 mm² · 0.0336 in² 0.098 kg/m · 0.066 lb/ft
6.0 mm 31.18 mm² · 0.0483 in² 0.141 kg/m · 0.094 lb/ft
8.0 mm 55.43 mm² · 0.0859 in² 0.250 kg/m · 0.168 lb/ft
10 mm 86.60 mm² · 0.1342 in² 0.391 kg/m · 0.262 lb/ft
12 mm 124.71 mm² · 0.1933 in² 0.562 kg/m · 0.378 lb/ft
14 mm 169.74 mm² · 0.2631 in² 0.766 kg/m · 0.514 lb/ft
17 mm 250.28 mm² · 0.3879 in² 1.129 kg/m · 0.758 lb/ft
19 mm 312.64 mm² · 0.4846 in² 1.410 kg/m · 0.947 lb/ft
22 mm 419.16 mm² · 0.6497 in² 1.890 kg/m · 1.270 lb/ft
24 mm 498.83 mm² · 0.7732 in² 2.250 kg/m · 1.512 lb/ft
27 mm 631.33 mm² · 0.9786 in² 2.847 kg/m · 1.913 lb/ft
32 mm 886.81 mm² · 1.3746 in² 4.000 kg/m · 2.688 lb/ft
36 mm 1,122.37 mm² · 1.7397 in² 5.062 kg/m · 3.401 lb/ft
41 mm 1,455.79 mm² · 2.2565 in² 6.566 kg/m · 4.412 lb/ft
46 mm 1,832.51 mm² · 2.8404 in² 8.265 kg/m · 5.554 lb/ft
50 mm 2,165.06 mm² · 3.3559 in² 9.764 kg/m · 6.561 lb/ft

Computed for Ti Gr 2 at 4510 kg/m³ (0.1629 lb/in³). ASTM B265 / B348 (UNS R50400).

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.

Ti Gr 2 — 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 0.157 kg/m · 0.106 lb/ft
5/16 in 7.94 54.56 mm² · 0.0846 in² 0.246 kg/m · 0.165 lb/ft
3/8 in 9.52 78.57 mm² · 0.1218 in² 0.354 kg/m · 0.238 lb/ft
7/16 in 11.11 106.94 mm² · 0.1658 in² 0.482 kg/m · 0.324 lb/ft
1/2 in 12.70 139.68 mm² · 0.2165 in² 0.630 kg/m · 0.423 lb/ft
9/16 in 14.29 176.78 mm² · 0.2740 in² 0.797 kg/m · 0.536 lb/ft
5/8 in 15.88 218.25 mm² · 0.3383 in² 0.984 kg/m · 0.661 lb/ft
3/4 in 19.05 314.28 mm² · 0.4871 in² 1.417 kg/m · 0.952 lb/ft
7/8 in 22.22 427.77 mm² · 0.6631 in² 1.929 kg/m · 1.296 lb/ft
1 in 25.40 558.72 mm² · 0.8660 in² 2.520 kg/m · 1.693 lb/ft
1-1/4 in 31.75 873.01 mm² · 1.3532 in² 3.937 kg/m · 2.646 lb/ft
1-1/2 in 38.10 1,257.13 mm² · 1.9486 in² 5.670 kg/m · 3.810 lb/ft
2 in 50.80 2,234.90 mm² · 3.4641 in² 10.079 kg/m · 6.773 lb/ft

Stock sizes in inches, converted exactly at 25.4 mm per inch. Material: Titanium Grade 2 at 4510 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. Titanium Grade 2 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 titanium grade 2

Commercially pure titanium, the workhorse corrosion grade rather than the aerospace high-strength one. Density 4,510 kg/m³ gives it 57 % of steel’s mass with a comparable tensile strength, which is the headline — but titanium’s real advantage in chemical plant is a passive oxide film that survives chlorides, wet chlorine and oxidising acids that destroy stainless. It is expensive enough that the mass change is a secondary concern to the corrosion allowance it lets you remove.

Density
4,510 kg/m³ = 0.1629 lb/in³ · 0.5745× carbon steel · typical spread ±1 %
Specification
ASTM B265 / B348 (UNS R50400)
Equivalents
EN 3.7035 · JIS 2H · GB TA2
Typical uses
Chemical process heat exchangers · Desalination and marine · Medical implants · Anodised architectural panels
Weight-relevant caution

Poor machinability — low thermal conductivity causes heat to concentrate at the cutting edge. Titanium is also combustible as fine swarf.

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

Ti Gr 2 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 titanium grade 2 hexagonal bar weigh?

At the reference dimensions (AF = 24 mm) a titanium grade 2 hexagonal bar of this size weighs 2.250 kg/m, or 1.512 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 titanium grade 2's density of 4,510 kg/m³ gives 2.250 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 titanium grade 2 weigh more or less than steel?

It is lighter than carbon steel for the same section — about 43 % lighter at 4,510 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 0.5745× 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 ti gr 2 hexagonal bar weigh the same as a ti gr 2 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 Ti Gr 2 weight or carbon steel weight for costing?

Use the material you are actually buying. At 4,510 kg/m³ against carbon steel's 7,850 kg/m³, the same hexagonal bar differs by 42.5 % 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 Ti Gr 2 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 4,510 kg/m³ (ASTM B265 / B348 (UNS R50400)). 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.