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UB 305x127x48

Production class: hot rolled (EN 10365)

Section geometry

UB shape
Height (h):
311mm
Width (b):
125.3mm
Web thickness (tw):
9mm
Flange thickness (tf):
14mm
Radius (r):
9mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
9.577E7
Z-axis:
4.610E6
Elastic section modulus (Wel):mm³
Y-axis:
6.159E5
Z-axis:
73590
Plastic section modulus (Wpl):mm³
Y-axis:
7.108E5
Z-axis:
1.160E5
Radius of gyration (i):mm
Y-axis:
125
Z-axis:
27
Plastic shear area (Av):mm²
Y-axis:
3508
Z-axis:
2994
Weight per meter:
48.1kg/m
Area (A):
6120mm²
Surface area per meter:
1.09m²/m
Torsion constant (It):
3.182E5mm⁴
Warping constant (Iw):
1.012E11mm⁶

Profile overview for UB 305x127x48

The UB 305x127x48 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 311 mm and a flange width (b) of 125.3 mm, supported by a 9 mm thick web and 14 mm thick flanges. With a cross-sectional area of 6120 mm² and a linear mass of 48.1 kg/m, the UB 305x127x48 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 95770000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 710800 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 4610000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 305x127x48 provides a y-axis shear area (at strong bending axis) of 3508.4 mm² for web shear verification and a torsion constant of 318200 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 101200000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.