UPN 280 channel: weight per metre and dimensions
UPN 280 weighs 41.8 kg per metre. A 6 m bar is 250.8 kg, a 12 m bar 501.6 kg, and a tonne is about 23.9 m of this section. Nominal values to DIN 1026-1: depth 280 mm, flange width 95 mm.
Another length or a whole order: the channel weight calculator opens with UPN 280 already selected.
UPN 280 dimensions
| Dimension | Symbol | Value |
|---|---|---|
| Depth | h | 280 mm |
| Flange width | b | 95 mm |
| Web thickness | tw | 10 mm |
| Flange thickness | tf | 15 mm |
| Root radius | r | 15 mm |
| Cross-section area | A | 53.3 cm² |
| Mass per metre | G | 41.8 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.
UPN 280 weight by length
| Length, m | Mass, kg |
|---|---|
| 1 | 41.8 |
| 2 | 83.6 |
| 3 | 125.4 |
| 4 | 167.2 |
| 5 | 209 |
| 6 | 250.8 |
| 8 | 334.4 |
| 10 | 418 |
| 12 | 501.6 |
Steel cost is mass times the price per kilogram: at a price C per kg a 12 m bar costs 501.6 × C and a 6 m bar 250.8 × C. Cutting, drilling and painting are priced separately; paint goes by surface area, not by weight.
UPN 280 section properties
| Property | Symbol | Value |
|---|---|---|
| Second moment of area, major axis | Iy | 6280 cm⁴ |
| Elastic section modulus, major axis | Wel,y | 448 cm³ |
| Radius of gyration, major axis | iy | 10.9 cm |
| Second moment of area, minor axis | Iz | 399 cm⁴ |
| Elastic section modulus, minor axis, at the flange tip | Wel,z | 57.2 cm³ |
Iy governs deflection, Wel,y bending stress, iy the slenderness of a strut. Iy / Iz = 15.7: in vertical bending the section is 15.7 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 280 next to neighbouring sizes
| Section | h, mm | b, mm | kg/m | Iy, cm⁴ |
|---|---|---|---|---|
| UPN 260 | 260 | 90 | 37.9 | 4820 |
| UPN 280 | 280 | 95 | 41.8 | 6280 |
| UPN 300 | 300 | 100 | 46.2 | 8030 |
| HEA 280 | 270 | 280 | 76.4 | 13670 |
| HEB 280 | 280 | 280 | 103 | 19270 |
Against UPN 280 at the same number: HEA 280 — mass ×1.8, Iy ×2.2; HEB 280 — mass ×2.5, Iy ×3.1. One size up, UPN 300 adds 11 % mass and 28 % 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 280 weigh?
UPN 280 weighs 41.8 kg/m, so a 6 m bar is 250.8 kg and a 12 m bar 501.6 kg. Ten 12 m bars come to 5016 kg.
Which is heavier: HEA 280, HEB 280 or UPN 280?
Per metre: HEB 280 — 103 kg/m (h 280 mm); HEA 280 — 76.4 kg/m (h 270 mm); UPN 280 — 41.8 kg/m (h 280 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 280 mean in UPN 280?
The nominal depth in millimetres: UPN 280 is 280 mm deep with a 95 mm flange. The letters give the series: UPN, a channel with tapered flanges.
How many metres of UPN 280 are in a tonne?
23.9 m: 1000 kg / 41.8 kg/m. That is about 4 bars of 6 m or 2 bars of 12 m.
Does S235 or S355 steel change the weight of UPN 280?
No. The table mass is the cross-section area times the density of steel, 7850 kg/m³: 53.3 cm² × 0.785 = 41.84 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: