UBP 406x406x131

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

389mm

Width (b):

398mm

Web thickness (t_w):

13.7mm

Flange thickness (t_f):

13.7mm

Radius (r):

20mm

Section properties

Moment of inertia (I):mm⁴

Y-axis:

4.488E8

Z-axis:

1.440E8

Elastic section modulus (W_el):mm³

Y-axis:

2.307E6

Z-axis:

7.240E5

Plastic section modulus (W_pl):mm³

Y-axis:

2.554E6

Z-axis:

1.105E6

Radius of gyration (i):mm

Y-axis:

166

Z-axis:

Plastic shear area (A_v):mm²

Y-axis:

10910

Z-axis:

6032

Weight per meter:

131kg/m

Area (A):

16200mm²

Surface area per meter:

2.308m²/m

Torsion constant (I_t):

1.169E6mm⁴

Warping constant (I_w):

5.068E12mm⁶

Profile overview for UBP 406x406x131

The UBP 406x406x131 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 389 mm and a flange width (b) of 398 mm, supported by a 13.7 mm thick web and 13.7 mm thick flanges. With a cross-sectional area of 16200 mm² and a linear mass of 131 kg/m, the UBP 406x406x131 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 448800000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 2554000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 144000000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UBP 406x406x131 provides a y-axis shear area (at strong bending axis) of 10905.2 mm² for web shear verification and a torsion constant of 1169000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 5068000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.