LU · EN 10056-1

L 80×40/6

L 80×40/6 is an unequal-leg steel angle per EN 10056-1: legs 80×40 mm, thickness 6 mm, weight 5.4 kg/m, cross-section area 6.9 cm², moment of inertia Iy = 44.9 cm⁴, elastic section modulus Wel,y = 8.7 cm³.

Cross section · mm

80Long leg a · mm

40Short leg b · mm

6.89Area A · cm²

5.41Mass G · kg/m

Geometry

Long leg a80.00 mm

Short leg b40.00 mm

Thickness t6.00 mm

Root radius r₁7.00 mm

Cross-section area A6.890 cm²

Centroid C_x28.5 mm

Centroid C_y8.8 mm

Weight G
steel 7850 kg/m³5.41kg/m

Section properties

I_y44.900 cm⁴

I_z7.590 cm⁴

W_el,y8.730 cm³

W_el,z2.440 cm³

i_y25.50 mm

i_z10.50 mm

Principal axes u–v

I_u47.600 cm⁴

I_v4.930 cm⁴

i_v8.40 mm

tan α0.258 –

Reference

Profile standardEN 10056-1

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of L 80×40/6 for your design forces

Find the lightest section Compare sections

Enter the design loads and the section is checked for bending, shear and compression with flexural buckling.

Bending/ 2.4 kN·m

Shear/ 54.7 kN

Compression/ 3.9 kN

Steelγ_M0γ_M1L_crmmkClass3

Resistances and factors

M_c,y,Rd / M_c,z,RdW_el2.4 kN·m / 0.7 kN·m

V_c,z,Rd / V_c,y,RdA_v = 345 mm²54.7 kN / 54.7 kN

N_pl,Rd / N_b,Rd189.5 kN / 3.9 kN

N_cr,y / N_cr,v37.2 kN / 4.1 kN

f_yEN 10025-2275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve b · χ0.02

Yield strength is taken from the product standard for the governing thickness, so above 16 mm it is lower than the nominal grade. Simplified checks per EN 1993-1-1, without M+N+V interaction, without lateral-torsional buckling and without web shear buckling. Verify with a full design.

For angles the bending values refer to the axes parallel to the legs, which are not principal axes. A moment about one of them also bends the section about the other, so bending has to be resolved into the principal axes u and v and checked biaxially. Buckling already uses the weaker principal axis v.