UPN 120

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

120mm

Width (b):

55mm

Web thickness (t_w):

7mm

Flange thickness (t_f):

9mm

Radius (r):

9mm

Radius 2 (r₂):

4.5mm

Distance edge to centroid (y_s):

16mm

Distance shear center to centroid (y_m):

30.3mm

Distance end to measure point (u):

27.5mm

Flange slope:

Section properties

Moment of inertia (I):mm⁴

Y-axis:

3.640E6

Z-axis:

4.320E5

Elastic section modulus (W_el):mm³

Y-axis:

60700

Z-axis:

11100

Plastic section modulus (W_pl):mm³

Y-axis:

72600

Z-axis:

21200

Radius of gyration (i):mm

Y-axis:

46.2

Z-axis:

15.9

Plastic shear area (A_v):mm²

Y-axis:

990

Z-axis:

880

Weight per meter:

13.4kg/m

Area (A):

1700mm²

Surface area per meter:

0.434m²/m

Torsion constant (I_t):

41500mm⁴

Warping constant (I_w):

9.000E8mm⁶

Profile overview for UPN 120

The UPN 120 is a structural steel cross-section utilized in commercial construction, industrial framing, and mechanical engineering. Manufactured as a hot rolled section, it complies with EN 10365 dimensional standards, ensuring predictability in detailing and fabrication.Access to its exact geometric and statical properties is essential for 3D modeling and structural verification.

Geometry: This open profile features a total depth (h) of 120 mm and a flange width (b) of 55 mm, supported by a 7 mm thick web and 9 mm thick flanges. With a cross-sectional area of 1700 mm² and a linear mass of 13.4 kg/m, the UPN 120 offers a distinct stiffness-to-weight ratio for both column (axial) and beam applications.

Section properties: For design of bending, the major and minor axis properties dictate the member's structural capacity. The strong-axis moment of inertia (I_y) of 3640000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 72600 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 432000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UPN 120 provides a y-axis shear area (at strong bending axis) of 990 mm² for web shear verification and a torsion constant of 41500 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 900000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.