Steel Beam Sizes / Australia / RHS / 125×75×3.0 RHS
125×75×3.0 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
125×75×3.0 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 | 6.01 lb/ft | 8.95 kg/m |
| Height | 4.92 in | 125.00 mm |
| Width | 2.95 in | 75.00 mm |
| t | 0.118 in | 3.000 mm |
| Area | 1.77 in² | 1,140.00 mm² |
| Ix | 5.84 in⁴ | 2,430,000 mm⁴ |
| Iy | 2.67 in⁴ | 1,110,000 mm⁴ |
| Sx | 2.37 in³ | 38,880.00 mm³ |
| Sy | 1.81 in³ | 29,600.00 mm³ |
| Zx | 2.89 in³ | 47,300.00 mm³ |
| Zy | 2.03 in³ | 33,300.00 mm³ |
| rx | 1.82 in | 46.17 mm |
| ry | 1.23 in | 31.20 mm |
| J | 5.84 in⁴ | 2,430,000 mm⁴ |
Alternatives
Useful nearby sections
Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus 125×75×3.0 RHS.
Lighter in Rectangular hollow sections
100×50×4.0 RHS
- Weight
- 8.5 kg/m (-5.3%)
- Depth
- 100.0 mm (-20%)
- Ix
- 1,310,000 mm⁴ (-46%)
Heavier in Rectangular hollow sections
75×50×6.0 RHS
- Weight
- 9.7 kg/m (+7.9%)
- Depth
- 75.0 mm (-40%)
- Ix
- 800,000 mm⁴ (-67%)
Closest Iₓ in Rectangular hollow sections
150×50×2.5 RHS
- Weight
- 7.5 kg/m (-16%)
- Depth
- 150.0 mm (+20%)
- Ix
- 2,540,000 mm⁴ (+4.5%)
Source: Australian-Sections.xlsx (Sheets 1-19) · v2019.11 · Methodology