Back to All Sections

UB 1000x400x539

Production class: hot rolled (EN 10365)

Section geometry

UB shape
Height (h):
1030mm
Width (b):
407mm
Web thickness (tw):
28.4mm
Flange thickness (tf):
51.1mm
Radius (r):
30mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
1.203E10
Z-axis:
5.763E8
Elastic section modulus (Wel):mm³
Y-axis:
2.335E7
Z-axis:
2.832E6
Plastic section modulus (Wpl):mm³
Y-axis:
2.682E7
Z-axis:
4.435E6
Radius of gyration (i):mm
Y-axis:
418
Z-axis:
91
Plastic shear area (Av):mm²
Y-axis:
41600
Z-axis:
31630
Weight per meter:
539kg/m
Area (A):
68720mm²
Surface area per meter:
3.58m²/m
Torsion constant (It):
4.529E7mm⁴
Warping constant (Iw):
1.376E14mm⁶

Profile overview for UB 1000x400x539

The UB 1000x400x539 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 1030 mm and a flange width (b) of 407 mm, supported by a 28.4 mm thick web and 51.1 mm thick flanges. With a cross-sectional area of 68720 mm² and a linear mass of 539 kg/m, the UB 1000x400x539 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 12025300000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 26820000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 576300000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 1000x400x539 provides a y-axis shear area (at strong bending axis) of 41595.4 mm² for web shear verification and a torsion constant of 45290000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 137550000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.