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RHS 180×100×4 - Section Properties

The RHS 180×100×4 is a rectangular hollow section with a mass of 16.9 kg/m, an overall depth of 180 mm and width of 100 mm and a wall thickness of 4 mm. It has a cross-sectional area of 21.6 cm², a second moment of area Iᵧ of 945 cm⁴, a plastic modulus Wₚₗ,ᵧ of 128 cm³, to BS EN 10210-2:2006 (SCI P363 Blue Book).

Mass
16.9 kg/m
Depth
180 mm
Width
100 mm
Wall thickness
4 mm
Area
21.6 cm²
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RHS 180×100×4 section profile
mass (kg/m)16.9
t (mm)4
Iy (cm⁴)945
Iz (cm⁴)379
iy (cm)6.61
iz (cm)4.19
Wel,y (cm³)105
Wel,z (cm³)75.9
Wpl,y (cm³)128
Wpl,z (cm³)85.2
A (cm²)21.6
SA/m (m²/m)0.55
SA/t (m²/t)32.5

Related RHS Hot-finished sizes

RHS 180×60×8RHS 180×60×8.8RHS 180×60×10RHS 180×60×12.5RHS 180×100×5RHS 180×100×6.3RHS 180×100×7.1RHS 180×100×8

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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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