Steel Beam Sizes / UK / SHS / SHS 400×400×8

SHS 400×400×8 Steel Beam Dimensions and Properties

UK Square hollow sections · v2023.11

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

Units

Section diagram

SHS 400×400×8 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 65.79 lb/ft 97.90 kg/m
Height 15.75 in 400.00 mm
Width 15.75 in 400.00 mm
t 0.315 in 8.000 mm
Area 19.38 in² 12,500.00 mm²
Ix 766.40 in⁴ 319,000,000 mm⁴
Iy 766.40 in⁴ 319,000,000 mm⁴
Sx 97.03 in³ 1,590,000 mm³
Sy 97.03 in³ 1,590,000 mm³
Zx 111.67 in³ 1,830,000 mm³
Zy 111.67 in³ 1,830,000 mm³
rx 6.30 in 160.00 mm
ry 6.30 in 160.00 mm
J 1,170.02 in⁴ 487,000,000 mm⁴

Alternatives

Useful nearby sections

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

Lighter in Square hollow sections

SHS 260×260×12.5

Weight
95.8 kg/m (-2.1%)
Depth
260.0 mm (-35%)
Ix
124,000,000 mm⁴ (-61%)

Heavier in Square hollow sections

SHS 300×300×11

Weight
98.8 kg/m (+0.9%)
Depth
300.0 mm (-25%)
Ix
174,000,000 mm⁴ (-45%)

Closest Iₓ in Square hollow sections

SHS 350×350×12.5

Weight
131.0 kg/m (+34%)
Depth
350.0 mm (-12%)
Ix
315,000,000 mm⁴ (-1.3%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology