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UB 305x165x46

Production class: hot rolled (EN 10365)

Section geometry

UB shape
Height (h):
306.6mm
Width (b):
165.7mm
Web thickness (tw):
6.7mm
Flange thickness (tf):
11.8mm
Radius (r):
9mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
9.901E7
Z-axis:
8.956E6
Elastic section modulus (Wel):mm³
Y-axis:
6.458E5
Z-axis:
1.081E5
Plastic section modulus (Wpl):mm³
Y-axis:
7.202E5
Z-axis:
1.655E5
Radius of gyration (i):mm
Y-axis:
129
Z-axis:
39
Plastic shear area (Av):mm²
Y-axis:
3911
Z-axis:
2257
Weight per meter:
46.1kg/m
Area (A):
5870mm²
Surface area per meter:
1.247m²/m
Torsion constant (It):
2.223E5mm⁴
Warping constant (Iw):
1.943E11mm⁶

Profile overview for UB 305x165x46

The UB 305x165x46 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 306.6 mm and a flange width (b) of 165.7 mm, supported by a 6.7 mm thick web and 11.8 mm thick flanges. With a cross-sectional area of 5870 mm² and a linear mass of 46.1 kg/m, the UB 305x165x46 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 99010000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 720200 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 8956000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 305x165x46 provides a y-axis shear area (at strong bending axis) of 3910.52 mm² for web shear verification and a torsion constant of 222300 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 194300000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.