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UB 406x140x46

Production class: hot rolled (EN 10365)

Section geometry

UB shape
Height (h):
403.2mm
Width (b):
142.2mm
Web thickness (tw):
6.8mm
Flange thickness (tf):
11.2mm
Radius (r):
10mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
1.567E8
Z-axis:
5.380E6
Elastic section modulus (Wel):mm³
Y-axis:
7.774E5
Z-axis:
75670
Plastic section modulus (Wpl):mm³
Y-axis:
8.869E5
Z-axis:
1.181E5
Radius of gyration (i):mm
Y-axis:
163
Z-axis:
30
Plastic shear area (Av):mm²
Y-axis:
3185
Z-axis:
2975
Weight per meter:
46kg/m
Area (A):
5860mm²
Surface area per meter:
1.344m²/m
Torsion constant (It):
1.894E5mm⁴
Warping constant (Iw):
2.061E11mm⁶

Profile overview for UB 406x140x46

The UB 406x140x46 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 403.2 mm and a flange width (b) of 142.2 mm, supported by a 6.8 mm thick web and 11.2 mm thick flanges. With a cross-sectional area of 5860 mm² and a linear mass of 46 kg/m, the UB 406x140x46 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 (Iy) of 156700000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 886900 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 5380000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 406x140x46 provides a y-axis shear area (at strong bending axis) of 3185.28 mm² for web shear verification and a torsion constant of 189400 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 206100000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.