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RHS 90×50×4 - Section Properties

The RHS 90×50×4 is a rectangular hollow section with a mass of 8.15 kg/m, an overall depth of 90 mm and width of 50 mm and a wall thickness of 4 mm. It has a cross-sectional area of 10.4 cm², a second moment of area Iᵧ of 107 cm⁴, a plastic modulus Wₚₗ,ᵧ of 29.8 cm³, to BS EN 10210-2:2006 (SCI P363 Blue Book).

Mass
8.15 kg/m
Depth
90 mm
Width
50 mm
Wall thickness
4 mm
Area
10.4 cm²
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RHS 90×50×4 section profile
mass (kg/m)8.15
t (mm)4
Iy (cm⁴)107
Iz (cm⁴)41.9
iy (cm)3.21
iz (cm)2.01
Wel,y (cm³)23.8
Wel,z (cm³)16.8
Wpl,y (cm³)29.8
Wpl,z (cm³)19.6
A (cm²)10.4
SA/m (m²/m)0.27
SA/t (m²/t)33.2

Related RHS Hot-finished sizes

RHS 80×40×8RHS 90×50×3RHS 90×50×3.2RHS 90×50×3.6RHS 90×50×5RHS 90×50×6.3RHS 90×50×7.1RHS 90×50×8

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📘 How to read a steel section table (UB, UC, IPE, HE) →📘 Section modulus explained: elastic (Wel) vs plastic (Wpl) →📘 SHS vs RHS vs CHS: choosing a hollow steel section →
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