Steel Beam Sizes / Europe / RHS / RHS 350×200×12.5

RHS 350×200×12.5 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 350×200×12.5 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 68.54 lb/ft 102.00 kg/m
Height 13.78 in 350.00 mm
Width 7.87 in 200.00 mm
t 0.492 in 12.500 mm
Area 20.15 in² 13,000.00 mm²
Ix 502.12 in⁴ 209,000,000 mm⁴
Iy 207.58 in⁴ 86,400,000 mm⁴
Sx 72.62 in³ 1,190,000 mm³
Sy 52.72 in³ 864,000.00 mm³
Zx 89.70 in³ 1,470,000 mm³
Zy 60.66 in³ 994,000.00 mm³
rx 5.00 in 127.00 mm
ry 3.21 in 81.60 mm
J 468.49 in⁴ 195,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 350×200×12.5.

Lighter in Rectangular hollow sections

RHS 260×180×16

Weight
100.0 kg/m (-2.0%)
Depth
260.0 mm (-26%)
Ix
112,000,000 mm⁴ (-46%)

Heavier in Rectangular hollow sections

RHS 300×200×14.2

Weight
103.0 kg/m (+1.0%)
Depth
300.0 mm (-14%)
Ix
158,000,000 mm⁴ (-24%)

Closest Iₓ in Rectangular hollow sections

RHS 350×150×16

Weight
115.0 kg/m (+13%)
Depth
350.0 mm (0.0%)
Ix
211,000,000 mm⁴ (+1.0%)
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Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology