RHS 120×80×6.3

Rectangular hollow sections from British-Sections-1 and Eurocode 3 UK shared angle/hollow tables.

80 mm120 mm

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

Dimensions

PropertyMetricImperial
Height120 mm4.7244 in
Width80 mm3.1496 in
Thickness, t6.3 mm0.248031 in

Bending about the major axis

PropertyMetricImperial
Second moment of area, Iₓ4,400,000 mm⁴10.571 in⁴
Elastic modulus, Sₓ73,300 mm³4.473 in³
Plastic modulus, Zₓ91,000 mm³5.5532 in³
Radius of gyration, rₓ43.6 mm1.7165 in
Distance to top fibre60 mm2.3622 in
Distance to bottom fibre60 mm2.3622 in

Bending about the minor axis

PropertyMetricImperial
Second moment of area, I_y2,300,000 mm⁴5.5258 in⁴
Elastic modulus, S_y57,600 mm³3.515 in³
Plastic modulus, Z_y68,200 mm³4.1618 in³
Radius of gyration, r_y31.5 mm1.2402 in

Torsion and warping

PropertyMetricImperial
Torsion constant, J4,870,000 mm⁴11.7002 in⁴

Mass

PropertyMetricImperial
Mass per metre18.2 kg/m12.2298 lb/ft
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