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RHS 80×40×5 - Section Properties

The RHS 80×40×5 is a rectangular hollow section with a mass of 8.42 kg/m, an overall depth of 80 mm and width of 40 mm and a wall thickness of 5 mm. It has a cross-sectional area of 10.7 cm², a second moment of area Iᵧ of 80.3 cm⁴, a plastic modulus Wₚₗ,ᵧ of 26.1 cm³, to BS EN 10210-2:2006 (SCI P363 Blue Book).

Mass
8.42 kg/m
Depth
80 mm
Width
40 mm
Wall thickness
5 mm
Area
10.7 cm²
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RHS 80×40×5 section profile
mass (kg/m)8.42
t (mm)5
Iy (cm⁴)80.3
Iz (cm⁴)25.7
iy (cm)2.74
iz (cm)1.55
Wel,y (cm³)20.1
Wel,z (cm³)12.9
Wpl,y (cm³)26.1
Wpl,z (cm³)15.7
A (cm²)10.7
SA/m (m²/m)0.227
SA/t (m²/t)27

Related RHS Hot-finished sizes

RHS 80×40×3RHS 80×40×3.2RHS 80×40×3.6RHS 80×40×4RHS 80×40×6.3RHS 80×40×7.1RHS 80×40×8RHS 90×50×3

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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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