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UB 920x420x368

Production class: hot rolled (EN 10365)

Section geometry

UB shape
Height (h):
931mm
Width (b):
419mm
Web thickness (tw):
20.3mm
Flange thickness (tf):
34.3mm
Radius (r):
25mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
6.963E9
Z-axis:
4.212E8
Elastic section modulus (Wel):mm³
Y-axis:
1.495E7
Z-axis:
2.010E6
Plastic section modulus (Wpl):mm³
Y-axis:
1.688E7
Z-axis:
3.108E6
Radius of gyration (i):mm
Y-axis:
385
Z-axis:
94
Plastic shear area (Av):mm²
Y-axis:
28740
Z-axis:
20450
Weight per meter:
368kg/m
Area (A):
46560mm²
Surface area per meter:
3.454m²/m
Torsion constant (It):
1.452E7mm⁴
Warping constant (Iw):
8.453E13mm⁶

Profile overview for UB 920x420x368

The UB 920x420x368 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 931 mm and a flange width (b) of 419 mm, supported by a 20.3 mm thick web and 34.3 mm thick flanges. With a cross-sectional area of 46560 mm² and a linear mass of 368 kg/m, the UB 920x420x368 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 6962900000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 16880000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 421200000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 920x420x368 provides a y-axis shear area (at strong bending axis) of 28743.4 mm² for web shear verification and a torsion constant of 14520000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 84530000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.