UPN 320

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

320mm

Width (b):

100mm

Web thickness (t_w):

14mm

Flange thickness (t_f):

17.5mm

Radius (r):

17.5mm

Radius 2 (r₂):

8.8mm

Distance edge to centroid (y_s):

26mm

Distance shear center to centroid (y_m):

48.2mm

Distance end to measure point (u):

43mm

Flange slope:

Section properties

Moment of inertia (I):mm⁴

Y-axis:

1.087E8

Z-axis:

5.970E6

Elastic section modulus (W_el):mm³

Y-axis:

6.790E5

Z-axis:

80600

Plastic section modulus (W_pl):mm³

Y-axis:

8.260E5

Z-axis:

1.520E5

Radius of gyration (i):mm

Y-axis:

121

Z-axis:

28.1

Plastic shear area (A_v):mm²

Y-axis:

3500

Z-axis:

4710

Weight per meter:

59.5kg/m

Area (A):

7580mm²

Surface area per meter:

0.982m²/m

Torsion constant (I_t):

6.670E5mm⁴

Warping constant (I_w):

9.610E10mm⁶

Profile overview for UPN 320

The UPN 320 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 320 mm and a flange width (b) of 100 mm, supported by a 14 mm thick web and 17.5 mm thick flanges. With a cross-sectional area of 7580 mm² and a linear mass of 59.5 kg/m, the UPN 320 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 108700000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 826000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 5970000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UPN 320 provides a y-axis shear area (at strong bending axis) of 3500 mm² for web shear verification and a torsion constant of 667000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 96100000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.