Steel Beam Sizes / Europe / RHS / RHS 300×100×5.6

RHS 300×100×5.6 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 300×100×5.6 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 22.78 lb/ft 33.90 kg/m
Height 11.81 in 300.00 mm
Width 3.94 in 100.00 mm
t 0.220 in 5.600 mm
Area 6.70 in² 4,320.00 mm²
Ix 110.52 in⁴ 46,000,000 mm⁴
Iy 19.36 in⁴ 8,060,000 mm⁴
Sx 18.73 in³ 307,000.00 mm³
Sy 9.82 in³ 161,000.00 mm³
Zx 23.98 in³ 393,000.00 mm³
Zy 10.92 in³ 179,000.00 mm³
rx 4.06 in 103.00 mm
ry 1.70 in 43.20 mm
J 54.30 in⁴ 22,600,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 300×100×5.6.

Lighter in Rectangular hollow sections

RHS 160×80×10

Weight
33.7 kg/m (-0.6%)
Depth
160.0 mm (-47%)
Ix
12,800,000 mm⁴ (-72%)

Heavier in Rectangular hollow sections

RHS 200×100×8

Weight
35.1 kg/m (+3.5%)
Depth
200.0 mm (-33%)
Ix
22,300,000 mm⁴ (-52%)

Closest Iₓ in Rectangular hollow sections

RHS 250×150×7.1

Weight
42.6 kg/m (+26%)
Depth
250.0 mm (-17%)
Ix
46,100,000 mm⁴ (+0.2%)
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Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology