RHS 400×200×7.1

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

200 mm400 mm

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

Dimensions

PropertyMetricImperial
Height400 mm15.748 in
Width200 mm7.874 in
Thickness, t7.1 mm0.279528 in

Bending about the major axis

PropertyMetricImperial
Second moment of area, Iₓ175,000,000 mm⁴420.4392 in⁴
Elastic modulus, Sₓ877,000 mm³53.5178 in³
Plastic modulus, Zₓ1,080,000 mm³65.9056 in³
Radius of gyration, rₓ146 mm5.748 in
Distance to top fibre200 mm7.874 in
Distance to bottom fibre200 mm7.874 in

Bending about the minor axis

PropertyMetricImperial
Second moment of area, I_y59,900,000 mm⁴143.9103 in⁴
Elastic modulus, S_y599,000 mm³36.5532 in³
Plastic modulus, Z_y665,000 mm³40.5808 in³
Radius of gyration, r_y85.1 mm3.3504 in

Torsion and warping

PropertyMetricImperial
Torsion constant, J141,000,000 mm⁴338.7539 in⁴

Mass

PropertyMetricImperial
Mass per metre64.9 kg/m43.6108 lb/ft
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