Steel Beam Sizes / UK / RHS / RHS 300×100×6.3

RHS 300×100×6.3 Steel Beam Dimensions and Properties

UK Rectangular hollow sections · v2023.11

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

Units

Section diagram

RHS 300×100×6.3 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 25.53 lb/ft 38.00 kg/m
Height 11.81 in 300.00 mm
Width 3.94 in 100.00 mm
t 0.248 in 6.300 mm
Area 7.50 in² 4,840.00 mm²
Ix 122.77 in⁴ 51,100,000 mm⁴
Iy 21.38 in⁴ 8,900,000 mm⁴
Sx 20.81 in³ 341,000.00 mm³
Sy 10.86 in³ 178,000.00 mm³
Zx 26.79 in³ 439,000.00 mm³
Zy 12.14 in³ 199,000.00 mm³
rx 4.06 in 103.00 mm
ry 1.69 in 42.90 mm
J 60.06 in⁴ 25,000,000 mm⁴

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus RHS 300×100×6.3.

Lighter in Rectangular hollow sections

RHS 200×120×8

Weight
37.6 kg/m (-1.1%)
Depth
200.0 mm (-33%)
Ix
25,300,000 mm⁴ (-50%)

Heavier in Rectangular hollow sections

RHS 300×200×5

Weight
38.3 kg/m (+0.8%)
Depth
300.0 mm (0.0%)
Ix
63,200,000 mm⁴ (+24%)

Closest Iₓ in Rectangular hollow sections

RHS 250×150×8

Weight
47.7 kg/m (+26%)
Depth
250.0 mm (-17%)
Ix
51,100,000 mm⁴ (0.0%)
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Source: British-Sections-1 and Eurocode 3 UK shared angle/hollow tables · v2023.11 · Hot-finished hollow sections · Methodology