RHS 140×80 — Weight & Section Properties
rectangular hollow section (RHS) per EN 10219 (cold formed)
RHS 140×80 is a rectangular hollow section (RHS) with an outside dimension of 140×80 mm, available in wall thicknesses of 4, 5, 6, 8 mm — from 13 to 23.9 kg per meter. The table below lists weight and section properties for every standard thickness, computed from the exact EN 10219-2 corner geometry (7,850 kg/m³).
Typical uses: frames, columns, railings, machine bases, and general steel construction. Every row can be checked in the weight or deflection calculator with one click below.
RHS 140×80 × 6: cross-section drawn to scale (140×80 mm, t = 6 mm shown — the most common wall)RHS 140×80 — all wall thicknesses
| t (mm) | G (kg/m) | A (cm²) | Ix (cm⁴) | Wx (cm³) | ix (cm) | Iy (cm⁴) | Wy (cm³) | iy (cm) |
|---|
| 4 | 13 | 16.5 | 430 | 61.4 | 5.1 | 180 | 45.1 | 3.3 |
| 5 | 16 | 20.4 | 517 | 73.9 | 5.04 | 216 | 54 | 3.26 |
| 6 | 18.9 | 24 | 597 | 85.3 | 4.98 | 248 | 62 | 3.21 |
| 8 | 23.9 | 30.4 | 708 | 101 | 4.82 | 293 | 73.3 | 3.1 |
Frequently Asked Questions
How much does RHS 140×80 weigh?
It depends on the wall thickness: from 13 kg/m at t = 4 mm up to 23.9 kg/m at t = 8 mm. With the common t = 6 mm it weighs 18.9 kg/m — a 6 m bar is 113.4 kg.
Which wall thicknesses does RHS 140×80 come in?
The standard EN 10219 program for 140×80 mm covers t = 4, 5, 6, 8 mm. Other thicknesses exist by mill order; stockholders typically carry the ones in this table.
Which standard defines RHS 140×80?
These values follow EN 10219 (cold formed structural hollow sections) with its corner geometry — outer radius 2t, 2.5t or 3t depending on wall thickness. Hot finished equivalents per EN 10210 have tighter corners and marginally different weights and properties.
Values are entered from the governing standard’s published tables and cross-checked programmatically against its mass and section formulas before publication. Spotted an error? Write to advertising@metalabout.net — verified corrections ship within days. About