Steel Beam Sizes / Europe / RHS / RHS 260×180×12.5

RHS 260×180×12.5 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 260×180×12.5 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 53.82 lb/ft 80.10 kg/m
Height 10.24 in 260.00 mm
Width 7.09 in 180.00 mm
t 0.492 in 12.500 mm
Area 15.81 in² 10,200.00 mm²
Ix 223.43 in⁴ 93,000,000 mm⁴
Iy 124.93 in⁴ 52,000,000 mm⁴
Sx 43.63 in³ 715,000.00 mm³
Sy 35.21 in³ 577,000.00 mm³
Zx 53.64 in³ 879,000.00 mm³
Zy 41.44 in³ 679,000.00 mm³
rx 3.76 in 95.40 mm
ry 2.81 in 71.30 mm
J 254.67 in⁴ 106,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 260×180×12.5.

Lighter in Rectangular hollow sections

RHS 350×250×8.8

Weight
79.8 kg/m (-0.4%)
Depth
350.0 mm (+35%)
Ix
179,000,000 mm⁴ (+92%)

Heavier in Rectangular hollow sections

RHS 250×150×14.2

Weight
81.1 kg/m (+1.2%)
Depth
250.0 mm (-3.8%)
Ix
81,400,000 mm⁴ (-12%)

Closest Iₓ in Rectangular hollow sections

RHS 260×140×16

Weight
90.3 kg/m (+13%)
Depth
260.0 mm (0.0%)
Ix
93,400,000 mm⁴ (+0.4%)
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Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology