Steel Beam Sizes / UK / RHS / RHS 400×300×10

RHS 400×300×10 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 400×300×10 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 71.23 lb/ft 106.00 kg/m
Height 15.75 in 400.00 mm
Width 11.81 in 300.00 mm
t 0.394 in 10.000 mm
Area 20.93 in² 13,500.00 mm²
Ix 756.79 in⁴ 315,000,000 mm⁴
Iy 485.31 in⁴ 202,000,000 mm⁴
Sx 96.42 in³ 1,580,000 mm³
Sy 82.38 in³ 1,350,000 mm³
Zx 114.11 in³ 1,870,000 mm³
Zy 93.98 in³ 1,540,000 mm³
rx 6.02 in 153.00 mm
ry 4.80 in 122.00 mm
J 917.76 in⁴ 382,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 400×300×10.

Lighter in Rectangular hollow sections

RHS 300×200×14.2

Weight
103.0 kg/m (-2.8%)
Depth
300.0 mm (-25%)
Ix
158,000,000 mm⁴ (-50%)

Heavier in Rectangular hollow sections

RHS 500×300×8.8

Weight
107.0 kg/m (+0.9%)
Depth
500.0 mm (+25%)
Ix
478,000,000 mm⁴ (+52%)

Closest Iₓ in Rectangular hollow sections

RHS 400×200×14.2

Weight
126.0 kg/m (+19%)
Depth
400.0 mm (0.0%)
Ix
324,000,000 mm⁴ (+2.9%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology