Steel Beam Sizes / UK / CHS / CHS 508×12.5

CHS 508×12.5 Steel Beam Dimensions and Properties

UK Circular hollow sections · v2023.11

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

Units

Section diagram

CHS 508×12.5 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 102.81 lb/ft 153.00 kg/m
OD 20.000 in 508.000 mm
t 0.492 in 12.500 mm
Area 30.23 in² 19,500.00 mm²
Ix 1,436.70 in⁴ 598,000,000 mm⁴
Iy 1,436.70 in⁴ 598,000,000 mm⁴
Sx 143.41 in³ 2,350,000 mm³
Sy 143.41 in³ 2,350,000 mm³
Zx 187.34 in³ 3,070,000 mm³
Zy 187.34 in³ 3,070,000 mm³
rx 6.89 in 175.00 mm
ry 6.89 in 175.00 mm
J 2,883.01 in⁴ 1,200,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus CHS 508×12.5.

Lighter in Circular hollow sections

CHS 406.4×14.2

Weight
137.0 kg/m (-10%)
Depth
— mm
Ix
337,000,000 mm⁴ (-44%)

Heavier in Circular hollow sections

CHS 406.4×16

Weight
154.0 kg/m (+0.7%)
Depth
— mm
Ix
374,000,000 mm⁴ (-37%)

Closest Iₓ in Circular hollow sections

CHS 457×16

Weight
174.0 kg/m (+14%)
Depth
— mm
Ix
540,000,000 mm⁴ (-9.7%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology