UB 840x400x433

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

885mm

Width (b):

404mm

Web thickness (t_w):

24.4mm

Flange thickness (t_f):

43.9mm

Radius (r):

20mm

Section properties

Moment of inertia (I):mm⁴

Y-axis:

7.363E9

Z-axis:

4.835E8

Elastic section modulus (W_el):mm³

Y-axis:

1.663E7

Z-axis:

2.393E6

Plastic section modulus (W_pl):mm³

Y-axis:

1.892E7

Z-axis:

3.706E6

Radius of gyration (i):mm

Y-axis:

364

Z-axis:

Plastic shear area (A_v):mm²

Y-axis:

35470

Z-axis:

22620

Weight per meter:

433kg/m

Area (A):

55270mm²

Surface area per meter:

3.303m²/m

Torsion constant (I_t):

2.704E7mm⁴

Warping constant (I_w):

8.532E13mm⁶

Profile overview for UB 840x400x433

The UB 840x400x433 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 885 mm and a flange width (b) of 404 mm, supported by a 24.4 mm thick web and 43.9 mm thick flanges. With a cross-sectional area of 55266.24 mm² and a linear mass of 433 kg/m, the UB 840x400x433 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 (I_y) of 7362700000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 18920000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 483500000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 840x400x433 provides a y-axis shear area (at strong bending axis) of 35471.2 mm² for web shear verification and a torsion constant of 27040000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 85320000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.