Steel Beam Sizes / Australia / RHS / 125×75×2.5 RHS

125×75×2.5 RHS Steel Beam Dimensions and Properties

ASNZS Rectangular hollow sections · v2019.11

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Diagram, properties emphasis, and nearby alternatives use the selected unit system.

Units

Section diagram

125×75×2.5 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 5.06 lb/ft 7.53 kg/m
Height 4.92 in 125.00 mm
Width 2.95 in 75.00 mm
t 0.098 in 2.500 mm
Area 1.49 in² 959.00 mm²
Ix 4.97 in⁴ 2,070,000 mm⁴
Iy 2.26 in⁴ 942,000.00 mm⁴
Sx 2.02 in³ 33,120.00 mm³
Sy 1.53 in³ 25,120.00 mm³
Zx 2.44 in³ 40,000.00 mm³
Zy 1.72 in³ 28,200.00 mm³
rx 1.83 in 46.46 mm
ry 1.23 in 31.34 mm
J 4.93 in⁴ 2,050,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus 125×75×2.5 RHS.

Lighter in Rectangular hollow sections

100×50×3.3 RHS

Weight
7.1 kg/m (-5.2%)
Depth
100.0 mm (-20%)
Ix
1,130,000 mm⁴ (-45%)

Heavier in Rectangular hollow sections

75×50×5.0 RHS

Weight
8.3 kg/m (+11%)
Depth
75.0 mm (-40%)
Ix
726,000 mm⁴ (-65%)

Closest Iₓ in Rectangular hollow sections

150×50×2.0 RHS

Weight
6.1 kg/m (-19%)
Depth
150.0 mm (+20%)
Ix
2,080,000 mm⁴ (+0.5%)
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Source: Australian-Sections.xlsx (Sheets 1-19) · v2019.11 · Methodology