UPN 100 channel: weight per metre and dimensions
UPN 100 weighs 10.6 kg per metre. A 6 m bar is 63.6 kg, a 12 m bar 127.2 kg, and a tonne is about 94.3 m of this section. Nominal values to DIN 1026-1: depth 100 mm, flange width 50 mm.
Another length or a whole order: the channel weight calculator opens with UPN 100 already selected.
UPN 100 dimensions
| Dimension | Symbol | Value |
|---|---|---|
| Depth | h | 100 mm |
| Flange width | b | 50 mm |
| Web thickness | tw | 6 mm |
| Flange thickness | tf | 8.5 mm |
| Root radius | r | — |
| Cross-section area | A | 13.5 cm² |
| Mass per metre | G | 10.6 kg/m |
A delivered bar may differ from these nominal values within the rolling tolerances of EN 10279; invoicing goes by the mill certificate, not by the table. “—”: the sources give r for this size to different precision.
UPN 100 weight by length
| Length, m | Mass, kg |
|---|---|
| 1 | 10.6 |
| 2 | 21.2 |
| 3 | 31.8 |
| 4 | 42.4 |
| 5 | 53 |
| 6 | 63.6 |
| 8 | 84.8 |
| 10 | 106 |
| 12 | 127.2 |
Steel cost is mass times the price per kilogram: at a price C per kg a 12 m bar costs 127.2 × C and a 6 m bar 63.6 × C. Cutting, drilling and painting are priced separately; paint goes by surface area, not by weight.
UPN 100 section properties
| Property | Symbol | Value |
|---|---|---|
| Second moment of area, major axis | Iy | 206 cm⁴ |
| Elastic section modulus, major axis | Wel,y | 41.2 cm³ |
| Radius of gyration, major axis | iy | 3.91 cm |
| Second moment of area, minor axis | Iz | 29.3 cm⁴ |
| Elastic section modulus, minor axis, at the flange tip | Wel,z | 8.49 cm³ |
Iy governs deflection, Wel,y bending stress, iy the slenderness of a strut. Iy / Iz = 7: in vertical bending the section is 7 times stiffer than sideways. Source: ArcelorMittal catalogue “Sections and Merchant Bars” (2023), each value checked against a second, independent table. These are inputs for a check to EN 1993-1-1, not a load capacity.
UPN 100 next to neighbouring sizes
| Section | h, mm | b, mm | kg/m | Iy, cm⁴ |
|---|---|---|---|---|
| UPN 80 | 80 | 45 | 8.64 | 106 |
| UPN 100 | 100 | 50 | 10.6 | 206 |
| UPN 120 | 120 | 55 | 13.4 | 364 |
| IPE 100 | 100 | 55 | 8.1 | 171 |
| HEA 100 | 96 | 100 | 16.7 | 349.2 |
| HEB 100 | 100 | 100 | 20.4 | 449.5 |
Against UPN 100 at the same number: IPE 100 — mass ×0.8, Iy ×0.8; HEA 100 — mass ×1.6, Iy ×1.7; HEB 100 — mass ×1.9, Iy ×2.2. One size up, UPN 120 adds 26 % mass and 77 % Iy.
Other sizes
- IPE beams: IPE 100 · IPE 120 · IPE 140 · IPE 160 · IPE 180 · IPE 200 · IPE 220 · IPE 240 · IPE 270 · IPE 300
- HEA beams: HEA 100 · HEA 120 · HEA 140 · HEA 160 · HEA 180 · HEA 200 · HEA 220 · HEA 240 · HEA 260 · HEA 280 · HEA 300
- HEB beams: HEB 100 · HEB 120 · HEB 140 · HEB 160 · HEB 180 · HEB 200 · HEB 220 · HEB 240 · HEB 260 · HEB 280 · HEB 300
- UPN channels: UPN 100 · UPN 120 · UPN 140 · UPN 160 · UPN 180 · UPN 200 · UPN 220 · UPN 240 · UPN 260 · UPN 280 · UPN 300
Frequently asked questions
How much does a 6 m and a 12 m UPN 100 weigh?
UPN 100 weighs 10.6 kg/m, so a 6 m bar is 63.6 kg and a 12 m bar 127.2 kg. Ten 12 m bars come to 1272 kg.
Which is heavier: IPE 100, HEA 100, HEB 100 or UPN 100?
Per metre: HEB 100 — 20.4 kg/m (h 100 mm); HEA 100 — 16.7 kg/m (h 96 mm); UPN 100 — 10.6 kg/m (h 100 mm); IPE 100 — 8.1 kg/m (h 100 mm). UPN is a channel and is not symmetric about its web — a different member for different jobs, compared here by weight only.
What does 100 mean in UPN 100?
The nominal depth in millimetres: UPN 100 is 100 mm deep with a 50 mm flange. The letters give the series: UPN, a channel with tapered flanges.
How many metres of UPN 100 are in a tonne?
94.3 m: 1000 kg / 10.6 kg/m. That is about 15.7 bars of 6 m or 7.9 bars of 12 m.
Does S235 or S355 steel change the weight of UPN 100?
No. The table mass is the cross-section area times the density of steel, 7850 kg/m³: 13.5 cm² × 0.785 = 10.6 kg/m. The grade to EN 10025-2 sets strength, not density. A real bar differs from nominal only within the rolling tolerances of EN 10279.
Updated: