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UB 920x420x344

Production class: hot rolled (EN 10365)

Section geometry

UB shape
Height (h):
927mm
Width (b):
418mm
Web thickness (tw):
19.3mm
Flange thickness (tf):
32mm
Radius (r):
25mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
6.491E9
Z-axis:
3.901E8
Elastic section modulus (Wel):mm³
Y-axis:
1.400E7
Z-axis:
1.866E6
Plastic section modulus (Wpl):mm³
Y-axis:
1.579E7
Z-axis:
2.884E6
Radius of gyration (i):mm
Y-axis:
384
Z-axis:
94
Plastic shear area (Av):mm²
Y-axis:
26752
Z-axis:
19410
Weight per meter:
344kg/m
Area (A):
43720mm²
Surface area per meter:
3.444m²/m
Torsion constant (It):
1.198E7mm⁴
Warping constant (Iw):
7.800E13mm⁶

Profile overview for UB 920x420x344

The UB 920x420x344 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 927 mm and a flange width (b) of 418 mm, supported by a 19.3 mm thick web and 32 mm thick flanges. With a cross-sectional area of 43720 mm² and a linear mass of 344 kg/m, the UB 920x420x344 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 6490600000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 15790000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 390100000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 920x420x344 provides a y-axis shear area (at strong bending axis) of 26752 mm² for web shear verification and a torsion constant of 11980000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 78000000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.