Steel Beam Sizes / Europe / HD Sections / HD 400×634

HD 400×634 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 400×634 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 426.03 lb/ft 634.00 kg/m
Depth, d 18.66 in 474.00 mm
Flange width, bf 16.69 in 424.00 mm
tw 1.874 in 47.600 mm
tf 3.035 in 77.100 mm
Area 125.24 in² 80,800.00 mm²
Ix 6,582.88 in⁴ 2,740,000,000 mm⁴
Iy 2,359.26 in⁴ 982,000,000 mm⁴
Sx 707.88 in³ 11,600,000 mm³
Sy 282.54 in³ 4,630,000 mm³
Zx 866.54 in³ 14,200,000 mm³
Zy 434.49 in³ 7,120,000 mm³
rx 7.24 in 184.00 mm
ry 4.33 in 110.00 mm
J 331.55 in⁴ 138,000,000 mm⁴
Cw 143,742.44 in⁶ 38,600,000,000,000 mm⁶

Alternatives

Useful nearby sections

Same-series weight neighbors, closest Ix, and a nearby depth series when available — with percent change versus HD 400×634.

Lighter in HD wide flange columns

HD 400×592

Weight
592.0 kg/m (-6.6%)
Depth
465.0 mm (-1.9%)
Ix
2,500,000,000 mm⁴ (-8.8%)

Heavier in HD wide flange columns

HD 400×677

Weight
677.0 kg/m (+6.8%)
Depth
483.0 mm (+1.9%)
Ix
3,000,000,000 mm⁴ (+9.5%)

Closest Iₓ in HD wide flange columns

HD 400×551

Weight
551.0 kg/m (-13%)
Depth
455.0 mm (-4.0%)
Ix
2,260,000,000 mm⁴ (-18%)
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Source: Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1 · v2026.1 · Eurocode 3 - UK National Annex · Methodology