Steel Beam Sizes / Europe / SHS / SHS 120×120×12.5
SHS 120×120×12.5 Dimensions, Weight and Section Properties
EN Square hollow sections · v2026.1
SHS 120×120×12.5: 40.9 kg/m weight. View the full dimensions and properties in imperial and metric units below.
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Section diagram
SHS 120×120×12.5 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 | 27.48 lb/ft | 40.90 kg/m |
| Height | 4.72 in | 120.00 mm |
| Width | 4.72 in | 120.00 mm |
| t | 0.492 in | 12.500 mm |
| Area | 8.08 in² | 5,210.00 mm² |
| Ix | 23.59 in⁴ | 9,820,000 mm⁴ |
| Iy | 23.59 in⁴ | 9,820,000 mm⁴ |
| Sx | 10.01 in³ | 164,000.00 mm³ |
| Sy | 10.01 in³ | 164,000.00 mm³ |
| Zx | 12.63 in³ | 207,000.00 mm³ |
| Zy | 12.63 in³ | 207,000.00 mm³ |
| rx | 1.71 in | 43.40 mm |
| ry | 1.71 in | 43.40 mm |
| J | 38.92 in⁴ | 16,200,000 mm⁴ |
Alternatives
Useful nearby sections
Compare weight neighbors, another Ix option, and a nearby depth series when available, with percent change versus SHS 120×120×12.5.
Lighter in Square hollow sections
SHS 140×140×10
- Weight
- 40.0 kg/m (-2.2%)
- Depth
- 140.0 mm (+17%)
- Ix
- 14,200,000 mm⁴ (+45%)
Heavier in Square hollow sections
SHS 160×160×8.8
- Weight
- 41.1 kg/m (+0.5%)
- Depth
- 160.0 mm (+33%)
- Ix
- 19,800,000 mm⁴ (+102%)
Another Iₓ option in Square hollow sections
SHS 140×140×6.3
- Weight
- 26.1 kg/m (-36%)
- Depth
- 140.0 mm (+17%)
- Ix
- 9,840,000 mm⁴ (+0.2%)
Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology