Steel Beam Sizes / Europe / HD Sections / HD 400×900

HD 400×900 Steel Beam Dimensions and Properties

EN HD wide flange columns · v2026.1

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

Units

Section diagram

HD 400×900 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 604.77 lb/ft 900.00 kg/m
Depth, d 20.91 in 531.00 mm
Flange width, bf 17.40 in 442.00 mm
tw 2.594 in 65.900 mm
tf 4.173 in 106.000 mm
Area 178.10 in² 114,900.00 mm²
Ix 10,811.29 in⁴ 4,500,000,000 mm⁴
Iy 3,675.84 in⁴ 1,530,000,000 mm⁴
Sx 1,037.40 in³ 17,000,000 mm³
Sy 423.50 in³ 6,940,000 mm³
Zx 1,318.11 in³ 21,600,000 mm³
Zy 652.95 in³ 10,700,000 mm³
rx 7.80 in 198.00 mm
ry 4.57 in 116.00 mm
J 874.51 in⁴ 364,000,000 mm⁴
Cw 256,576.53 in⁶ 68,900,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HD 400×900.

Lighter in HD wide flange columns

HD 400×818

Weight
818.0 kg/m (-9.1%)
Depth
514.0 mm (-3.2%)
Ix
3,920,000,000 mm⁴ (-13%)

Heavier in HD wide flange columns

HD 400×990

Weight
990.0 kg/m (+10.0%)
Depth
550.0 mm (+3.6%)
Ix
5,190,000,000 mm⁴ (+15%)

Closest Iₓ in HD wide flange columns

HD 400×744

Weight
744.0 kg/m (-17%)
Depth
498.0 mm (-6.2%)
Ix
3,420,000,000 mm⁴ (-24%)
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Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Eurocode 3 - UK National Annex · Methodology