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UB 920x420x420

Production class: hot rolled (EN 10365)

Section geometry

UB shape
Height (h):
943mm
Width (b):
422mm
Web thickness (tw):
22.5mm
Flange thickness (tf):
39.9mm
Radius (r):
25mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
8.174E9
Z-axis:
5.007E8
Elastic section modulus (Wel):mm³
Y-axis:
1.733E7
Z-axis:
2.373E6
Plastic section modulus (Wpl):mm³
Y-axis:
1.962E7
Z-axis:
3.671E6
Radius of gyration (i):mm
Y-axis:
390
Z-axis:
96
Plastic shear area (Av):mm²
Y-axis:
33680
Z-axis:
22850
Weight per meter:
420kg/m
Area (A):
53410mm²
Surface area per meter:
3.486m²/m
Torsion constant (It):
2.208E7mm⁴
Warping constant (Iw):
1.019E14mm⁶

Profile overview for UB 920x420x420

The UB 920x420x420 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 943 mm and a flange width (b) of 422 mm, supported by a 22.5 mm thick web and 39.9 mm thick flanges. With a cross-sectional area of 53410 mm² and a linear mass of 420 kg/m, the UB 920x420x420 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 8174100000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 19620000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 500700000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 920x420x420 provides a y-axis shear area (at strong bending axis) of 33675.6 mm² for web shear verification and a torsion constant of 22080000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 101890000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.