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RHS 350×150×8 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 350×150×8 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 40.52 lb/ft 60.30 kg/m
Height 13.78 in 350.00 mm
Width 5.91 in 150.00 mm
t 0.315 in 8.000 mm
Area 11.90 in² 7,680.00 mm²
Ix 283.50 in⁴ 118,000,000 mm⁴
Iy 74.48 in⁴ 31,000,000 mm⁴
Sx 41.07 in³ 673,000.00 mm³
Sy 25.26 in³ 414,000.00 mm³
Zx 51.50 in³ 844,000.00 mm³
Zy 28.32 in³ 464,000.00 mm³
rx 4.88 in 124.00 mm
ry 2.50 in 63.60 mm
J 190.52 in⁴ 79,300,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 350×150×8.

Lighter in Rectangular hollow sections

RHS 300×250×7.1

Weight
59.3 kg/m (-1.7%)
Depth
300.0 mm (-14%)
Ix
103,000,000 mm⁴ (-13%)

Heavier in Rectangular hollow sections

RHS 220×120×12.5

Weight
60.5 kg/m (+0.3%)
Depth
220.0 mm (-37%)
Ix
45,600,000 mm⁴ (-61%)

Closest Iₓ in Rectangular hollow sections

RHS 300×200×10

Weight
74.5 kg/m (+24%)
Depth
300.0 mm (-14%)
Ix
118,000,000 mm⁴ (0.0%)
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Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology