L · EN 10056-1

L 180×180/18

L 180×180/18 is an equal-leg steel angle per EN 10056-1: leg length 180 mm, thickness 18 mm, weight 48.6 kg/m, cross-section area 61.9 cm², moment of inertia Iy = 1866 cm⁴, elastic section modulus Wel,y = 144.7 cm³.

Cross section · mm

180Leg a · mm

18Thickness t · mm

61.90Area A · cm²

48.60Mass G · kg/m

Geometry

Leg length a180.00 mm

Thickness t18.00 mm

Cross-section area A61.900 cm²

Centroid C_x=C_y51.0 mm

Weight G
steel 7850 kg/m³48.60kg/m

Section properties

Moment of inertia I_y=I_z1 866.000 cm⁴

Section modulus W_el144.651 cm³

Plastic modulus W_pl262.710 cm³

Radius of gyration i_y54.90 mm

Principal axes u–v

I_u2 965.000 cm⁴

I_v766.000 cm⁴

Reference

Profile standardEN 10056-1

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of L 180×180/18 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/ 38.3 kN·m

Shear/ 473.5 kN

Compression/ 501.3 kN

Steelγ_M0γ_M1L_crmmkf_y265MPaClass3

Resistances and factors

M_c,y,Rd / M_c,z,RdW_el38.3 kN·m / 38.3 kN·m

V_c,z,Rd / V_c,y,RdA_v = 3095 mm²473.5 kN / 473.5 kN

N_pl,Rd / N_b,Rd1.64 MN / 501.3 kN

N_cr,y / N_cr,v1.55 MN / 635.0 kN

f_yt = 18.0 mm > 16 mm, EN 10025-2265 MPa

γ_M0 / γ_M11.00 / 1.00

Curve b · χ0.31

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.