UPN 380

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

380mm

Width (b):

102mm

Web thickness (t_w):

13.5mm

Flange thickness (t_f):

16mm

Radius (r):

16mm

Radius 2 (r₂):

8mm

Distance edge to centroid (y_s):

23.8mm

Distance shear center to centroid (y_m):

45.8mm

Distance end to measure point (u):

44.25mm

Flange slope:

Section properties

Moment of inertia (I):mm⁴

Y-axis:

1.576E8

Z-axis:

6.150E6

Elastic section modulus (W_el):mm³

Y-axis:

8.290E5

Z-axis:

78700

Plastic section modulus (W_pl):mm³

Y-axis:

1.010E6

Z-axis:

1.480E5

Radius of gyration (i):mm

Y-axis:

140

Z-axis:

27.7

Plastic shear area (A_v):mm²

Y-axis:

3264

Z-axis:

5320

Weight per meter:

63.1kg/m

Area (A):

8040mm²

Surface area per meter:

1.11m²/m

Torsion constant (I_t):

5.910E5mm⁴

Warping constant (I_w):

1.460E11mm⁶

Profile overview for UPN 380

The UPN 380 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 380 mm and a flange width (b) of 102 mm, supported by a 13.5 mm thick web and 16 mm thick flanges. With a cross-sectional area of 8040 mm² and a linear mass of 63.1 kg/m, the UPN 380 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 157600000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 1010000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 6150000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UPN 380 provides a y-axis shear area (at strong bending axis) of 3264 mm² for web shear verification and a torsion constant of 591000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 146000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.