UPN 350

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

350mm

Width (b):

100mm

Web thickness (t_w):

14mm

Flange thickness (t_f):

16mm

Radius (r):

16mm

Radius 2 (r₂):

8mm

Distance edge to centroid (y_s):

24mm

Distance shear center to centroid (y_m):

44.5mm

Distance end to measure point (u):

43mm

Flange slope:

Section properties

Moment of inertia (I):mm⁴

Y-axis:

1.284E8

Z-axis:

5.700E6

Elastic section modulus (W_el):mm³

Y-axis:

7.340E5

Z-axis:

75000

Plastic section modulus (W_pl):mm³

Y-axis:

9.180E5

Z-axis:

1.430E5

Radius of gyration (i):mm

Y-axis:

129

Z-axis:

27.2

Plastic shear area (A_v):mm²

Y-axis:

3200

Z-axis:

5080

Weight per meter:

60.6kg/m

Area (A):

7730mm²

Surface area per meter:

1.05m²/m

Torsion constant (I_t):

6.120E5mm⁴

Warping constant (I_w):

1.140E11mm⁶

Profile overview for UPN 350

The UPN 350 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 350 mm and a flange width (b) of 100 mm, supported by a 14 mm thick web and 16 mm thick flanges. With a cross-sectional area of 7730 mm² and a linear mass of 60.6 kg/m, the UPN 350 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 128400000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 918000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 5700000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UPN 350 provides a y-axis shear area (at strong bending axis) of 3200 mm² for web shear verification and a torsion constant of 612000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 114000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.