Steel Beam Sizes / Australia / RHS / 125×75×3.3 RHS
125×75×3.3 RHS Steel Beam Dimensions and Properties
ASNZS Rectangular hollow sections · v2019.11
Diagram, properties emphasis, and nearby alternatives use the selected unit system.
Section diagram
125×75×3.3 RHS 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 | 6.54 lb/ft | 9.73 kg/m |
| Height | 4.92 in | 125.00 mm |
| Width | 2.95 in | 75.00 mm |
| t | 0.130 in | 3.300 mm |
| Area | 1.92 in² | 1,240.00 mm² |
| Ix | 6.25 in⁴ | 2,600,000 mm⁴ |
| Iy | 2.86 in⁴ | 1,190,000 mm⁴ |
| Sx | 2.54 in³ | 41,600.00 mm³ |
| Sy | 1.94 in³ | 31,733.33 mm³ |
| Zx | 3.11 in³ | 50,900.00 mm³ |
| Zy | 2.19 in³ | 35,900.00 mm³ |
| rx | 1.80 in | 45.79 mm |
| ry | 1.22 in | 30.98 mm |
| J | 6.39 in⁴ | 2,660,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus 125×75×3.3 RHS.
Lighter in Rectangular hollow sections
75×50×6.0 RHS
- Weight
- 9.7 kg/m (-0.8%)
- Depth
- 75.0 mm (-40%)
- Ix
- 800,000 mm⁴ (-69%)
Heavier in Rectangular hollow sections
100×50×5.0 RHS
- Weight
- 10.3 kg/m (+5.6%)
- Depth
- 100.0 mm (-20%)
- Ix
- 1,530,000 mm⁴ (-41%)
Closest Iₓ in Rectangular hollow sections
150×50×2.5 RHS
- Weight
- 7.5 kg/m (-23%)
- Depth
- 150.0 mm (+20%)
- Ix
- 2,540,000 mm⁴ (-2.3%)
Source: Australian-Sections.xlsx (Sheets 1-19) · v2019.11 · Methodology