L 120×80×8

Angles from Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1.

80 mm120 mm

Outline drawn from the published dimensions. Fillets and root radii are not shown.

Dimensions

PropertyMetricImperial
Depth, d120 mm4.7244 in
Width80 mm3.1496 in
Thickness, t8 mm0.314961 in

Bending about the major axis

PropertyMetricImperial
Second moment of area, Iₓ2,260,000 mm⁴5.4297 in⁴
Elastic modulus, Sₓ27,600 mm³1.6843 in³
Radius of gyration, rₓ38.2 mm1.5039 in
Distance to top fibre81.8841 mm3.2238 in
Distance to bottom fibre38.1159 mm1.5006 in

Bending about the minor axis

PropertyMetricImperial
Second moment of area, I_y808,000 mm⁴1.9412 in⁴
Elastic modulus, S_y13,200 mm³0.805513 in³
Radius of gyration, r_y22.8 mm0.897638 in

Torsion and warping

PropertyMetricImperial
Torsion constant, J36,200 mm⁴0.086971 in⁴

Mass

PropertyMetricImperial
Mass per metre12.2 kg/m8.198 lb/ft
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L 120×80×8 dimensions and section properties | Kannamwar Engineering