Steel Beam Sizes / UK / SHS / SHS 350×350×12.5

SHS 350×350×12.5 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 350×350×12.5 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 88.03 lb/ft 131.00 kg/m
Height 13.78 in 350.00 mm
Width 13.78 in 350.00 mm
t 0.492 in 12.500 mm
Area 25.89 in² 16,700.00 mm²
Ix 756.79 in⁴ 315,000,000 mm⁴
Iy 756.79 in⁴ 315,000,000 mm⁴
Sx 109.84 in³ 1,800,000 mm³
Sy 109.84 in³ 1,800,000 mm³
Zx 128.76 in³ 2,110,000 mm³
Zy 128.76 in³ 2,110,000 mm³
rx 5.39 in 137.00 mm
ry 5.39 in 137.00 mm
J 1,174.83 in⁴ 489,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus SHS 350×350×12.5.

Lighter in Square hollow sections

SHS 300×300×14.2

Weight
126.0 kg/m (-3.8%)
Depth
300.0 mm (-14%)
Ix
216,000,000 mm⁴ (-31%)

Heavier in Square hollow sections

SHS 400×400×11

Weight
133.0 kg/m (+1.5%)
Depth
400.0 mm (+14%)
Ix
427,000,000 mm⁴ (+36%)

Closest Iₓ in Square hollow sections

SHS 400×400×8

Weight
97.9 kg/m (-25%)
Depth
400.0 mm (+14%)
Ix
319,000,000 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