IPE 120 - Section Properties

The IPE 120 is a European I-beam (IPE) with a mass of 10.4 kg/m, an overall depth of 120 mm and width of 64 mm. It has a cross-sectional area of 13.2 cm², a second moment of area Iᵧ of 318 cm⁴, a plastic modulus Wₚₗ,ᵧ of 60.7 cm³, tabulated by CivilAxis from EN 10365 · Continental Steel.

Mass: 10.4 kg/m
Depth: 120 mm
Width: 64 mm
Area: 13.2 cm²

Ask about capacity, buckling or detailing for IPE 120.

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Dimension symbols for IPE sections. Not to scale.

IPE 120 section properties to EN 10365 · Continental Steel.
Geometry
Depth of section	h	120
Width of section	b	64
Web thickness	t_w	4.4
Flange thickness	t_f	6.3
Root fillet radius	r	7
Depth between fillets	d	93.4
Mass and area
Mass per metre	mass	10.4
Cross-sectional area	A	13.2
Bending about the major axis (y-y)
Area moment of inertia about y-axis	I_y	318
Elastic section modulus about y-axis	W_el,y	53
Plastic section modulus about y-axis	W_pl,y	60.7
Radius of gyration about y-axis	i_y	4.9
Bending about the minor axis (z-z)
Area moment of inertia about z-axis	I_z	27.7
Elastic section modulus about z-axis	W_el,z	9
Plastic section modulus about z-axis	W_pl,z	13.6
Radius of gyration about z-axis	i_z	1.45
Torsion and warping
Torsion constant (St Venant)	I_t	1.69
Warping constant	I_w	0.00089
Classification and stability
Flange local-buckling ratio	c_f/t_f	3.62
Web local-buckling ratio	c_w/t_w	21.2
Buckling parameter	u	3.601
Torsional index	X	17.9
Detailing dimensions
End clearance	C	4
Notch dimension N	N	40
Notch dimension n	n	14
Surface area
Surface area per metre	SA/m	0.475

Is IPE 120 strong enough?

Simply supported beam, uniform load, major-axis bending - to EN 1993-1-1.

Span (m)Load (kN/m)Grade

✅Passes - 60% utilised, deflection governs

Bending30%

6.4 / 21.5 kNm

Shear8%

10.3 / 129.0 kN

Deflection60%

4.2 / 6.9 mm

Class 1 section. ULS uses γQ = 1.5 on the load you enter; deflection uses the unfactored load against L/360. Lateral-torsional buckling is not included - the compression flange is assumed restrained.