L 40×20/4 is an unequal-leg steel angle per EN 10056-1: legs 40×20 mm, thickness 4 mm, weight 1.8 kg/m, cross-section area 2.3 cm², moment of inertia Iy = 3.6 cm⁴, elastic section modulus Wel,y = 1.4 cm³.
Geometry
Long leg a40.00 mm
Short leg b20.00 mm
Thickness t4.00 mm
Root radius r₁4.00 mm
Cross-section area A2.260 cm²
Centroid Cx14.7 mm
Centroid Cy4.8 mm
Weight G steel 7850 kg/m³1.77kg/m
Section properties
IyⓘSecond moment of area about y-axis (strong axis)3.590 cm⁴
IzⓘSecond moment of area about z-axis (weak axis)0.596 cm⁴