L · EN 10056-1

L 50×50/9

L 50×50/9 is an equal-leg steel angle per EN 10056-1: leg length 50 mm, thickness 9 mm, weight 6.5 kg/m, cross-section area 8.2 cm², moment of inertia Iy = 17.9 cm⁴, elastic section modulus Wel,y = 5.2 cm³.

Cross section · mm

50Leg a · mm

9Thickness t · mm

8.24Area A · cm²

6.50Mass G · kg/m

Geometry

Leg length a50.00 mm

Thickness t9.00 mm

Cross-section area A8.240 cm²

Centroid C_x=C_y15.6 mm

Weight G
steel 7850 kg/m³6.50kg/m

Section properties

Moment of inertia I_y=I_z17.860 cm⁴

Section modulus W_el5.192 cm³

Plastic modulus W_pl9.470 cm³

Radius of gyration i_y14.70 mm

Principal axes u–v

I_u28.110 cm⁴

I_v7.610 cm⁴

Reference

Profile standardEN 10056-1

EurocodeEN 1993-1-1 (EC3)

Check to EN 1993-1-1

Work out the utilisation of L 50×50/9 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/ 1.4 kN·m

Shear/ 65.4 kN

Compression/ 6.0 kN

Steelγ_M0γ_M1L_crmmkClass3

Resistances and factors

M_c,y,Rd / M_c,z,RdW_el1.4 kN·m / 1.4 kN·m

V_c,z,Rd / V_c,y,RdA_v = 412 mm²65.4 kN / 65.4 kN

N_pl,Rd / N_b,Rd226.6 kN / 6.0 kN

N_cr,y / N_cr,v14.8 kN / 6.3 kN

f_yEN 10025-2275 MPa

γ_M0 / γ_M11.00 / 1.00

Curve b · χ0.03

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.