Steel Beam Sizes / Europe / RHS / RHS 200×120×12.5

RHS 200×120×12.5 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 200×120×12.5 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 38.03 lb/ft 56.60 kg/m
Height 7.87 in 200.00 mm
Width 4.72 in 120.00 mm
t 0.492 in 12.500 mm
Area 11.18 in² 7,210.00 mm²
Ix 86.01 in⁴ 35,800,000 mm⁴
Iy 37.48 in⁴ 15,600,000 mm⁴
Sx 21.85 in³ 358,000.00 mm³
Sy 15.87 in³ 260,000.00 mm³
Zx 27.77 in³ 455,000.00 mm³
Zy 19.16 in³ 314,000.00 mm³
rx 2.77 in 70.40 mm
ry 1.83 in 46.60 mm
J 85.77 in⁴ 35,700,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 200×120×12.5.

Lighter in Rectangular hollow sections

RHS 200×150×11

Weight
55.6 kg/m (-1.8%)
Depth
200.0 mm (0.0%)
Ix
38,400,000 mm⁴ (+7.3%)

Heavier in Rectangular hollow sections

RHS 260×180×8.8

Weight
57.7 kg/m (+1.9%)
Depth
260.0 mm (+30%)
Ix
69,400,000 mm⁴ (+94%)

Closest Iₓ in Rectangular hollow sections

RHS 200×150×10

Weight
51.0 kg/m (-9.9%)
Depth
200.0 mm (0.0%)
Ix
35,700,000 mm⁴ (-0.3%)
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Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Hot-finished hollow sections · Methodology