Steel Beam Sizes / UK / RHS / RHS 400×200×8

RHS 400×200×8 Steel Beam Dimensions and Properties

UK Rectangular hollow sections · v2023.11

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

Units

Section diagram

RHS 400×200×8 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 48.92 lb/ft 72.80 kg/m
Height 15.75 in 400.00 mm
Width 7.87 in 200.00 mm
t 0.315 in 8.000 mm
Area 14.38 in² 9,280.00 mm²
Ix 470.89 in⁴ 196,000,000 mm⁴
Iy 160.01 in⁴ 66,600,000 mm⁴
Sx 59.68 in³ 978,000.00 mm³
Sy 40.64 in³ 666,000.00 mm³
Zx 73.23 in³ 1,200,000 mm³
Zy 45.34 in³ 743,000.00 mm³
rx 5.71 in 145.00 mm
ry 3.33 in 84.70 mm
J 377.19 in⁴ 157,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 400×200×8.

Lighter in Rectangular hollow sections

RHS 250×150×12.5

Weight
72.3 kg/m (-0.7%)
Depth
250.0 mm (-37%)
Ix
73,900,000 mm⁴ (-62%)

Heavier in Rectangular hollow sections

RHS 300×250×8.8

Weight
72.9 kg/m (+0.1%)
Depth
300.0 mm (-25%)
Ix
124,000,000 mm⁴ (-37%)

Closest Iₓ in Rectangular hollow sections

RHS 350×150×14.2

Weight
103.0 kg/m (+41%)
Depth
350.0 mm (-12%)
Ix
192,000,000 mm⁴ (-2.0%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology