Steel Beam Sizes / Europe / RHS / RHS 400×300×16
RHS 400×300×16 Steel Beam Dimensions and Properties
EN Rectangular hollow sections · v2026.1
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
RHS 400×300×16 dimensions
Not to scale. Dimensions shown for reference.
Section properties
Symbols match the steel section finder. Imperial and metric values are shown side by side.
| Property | Imperial | Metric |
|---|---|---|
| Weight | 111.55 lb/ft | 166.00 kg/m |
| Height | 15.75 in | 400.00 mm |
| Width | 11.81 in | 300.00 mm |
| t | 0.630 in | 16.000 mm |
| Area | 32.71 in² | 21,100.00 mm² |
| Ix | 1,141.19 in⁴ | 475,000,000 mm⁴ |
| Iy | 727.96 in⁴ | 303,000,000 mm⁴ |
| Sx | 145.24 in³ | 2,380,000 mm³ |
| Sy | 123.27 in³ | 2,020,000 mm³ |
| Zx | 175.14 in³ | 2,870,000 mm³ |
| Zy | 143.41 in³ | 2,350,000 mm³ |
| rx | 5.91 in | 150.00 mm |
| ry | 4.72 in | 120.00 mm |
| J | 1,400.66 in⁴ | 583,000,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 400×300×16.
Lighter in Rectangular hollow sections
RHS 500×300×12.5
- Weight
- 151.0 kg/m (-9.0%)
- Depth
- 500.0 mm (+25%)
- Ix
- 658,000,000 mm⁴ (+39%)
Heavier in Rectangular hollow sections
RHS 500×300×14.2
- Weight
- 170.0 kg/m (+2.4%)
- Depth
- 500.0 mm (+25%)
- Ix
- 737,000,000 mm⁴ (+55%)
Closest Iₓ in Rectangular hollow sections
RHS 500×300×8.8
- Weight
- 107.0 kg/m (-36%)
- Depth
- 500.0 mm (+25%)
- Ix
- 478,000,000 mm⁴ (+0.6%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology