Steel Beam Sizes / Europe / RHS / RHS 300×100×7.1

RHS 300×100×7.1 Steel Beam Dimensions and Properties

EN Rectangular hollow sections · v2026.1

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

Units

Section diagram

RHS 300×100×7.1 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 28.63 lb/ft 42.60 kg/m
Height 11.81 in 300.00 mm
Width 3.94 in 100.00 mm
t 0.280 in 7.100 mm
Area 8.40 in² 5,420.00 mm²
Ix 136.46 in⁴ 56,800,000 mm⁴
Iy 23.57 in⁴ 9,810,000 mm⁴
Sx 23.13 in³ 379,000.00 mm³
Sy 11.96 in³ 196,000.00 mm³
Zx 29.90 in³ 490,000.00 mm³
Zy 13.49 in³ 221,000.00 mm³
rx 4.02 in 102.00 mm
ry 1.67 in 42.50 mm
J 66.79 in⁴ 27,800,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 300×100×7.1.

Lighter in Rectangular hollow sections

RHS 200×150×8

Weight
41.4 kg/m (-2.8%)
Depth
200.0 mm (-33%)
Ix
29,700,000 mm⁴ (-48%)

Heavier in Rectangular hollow sections

RHS 300×200×5.6

Weight
42.7 kg/m (+0.2%)
Depth
300.0 mm (0.0%)
Ix
70,200,000 mm⁴ (+24%)

Closest Iₓ in Rectangular hollow sections

RHS 250×100×12.5

Weight
62.5 kg/m (+47%)
Depth
250.0 mm (-17%)
Ix
56,200,000 mm⁴ (-1.1%)
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Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology