UB 457x279x421

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

555mm

Width (b):

302mm

Web thickness (t_w):

35.6mm

Flange thickness (t_f):

63.5mm

Radius (r):

20mm

Section properties

Moment of inertia (I):mm⁴

Y-axis:

2.577E9

Z-axis:

2.932E8

Elastic section modulus (W_el):mm³

Y-axis:

9.286E6

Z-axis:

1.942E6

Plastic section modulus (W_pl):mm³

Y-axis:

1.112E7

Z-axis:

3.038E6

Radius of gyration (i):mm

Y-axis:

218

Z-axis:

Plastic shear area (A_v):mm²

Y-axis:

38354

Z-axis:

20380

Weight per meter:

421kg/m

Area (A):

53930mm²

Surface area per meter:

2.212m²/m

Torsion constant (I_t):

5.731E7mm⁴

Warping constant (I_w):

1.760E13mm⁶

Profile overview for UB 457x279x421

The UB 457x279x421 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 555 mm and a flange width (b) of 302 mm, supported by a 35.6 mm thick web and 63.5 mm thick flanges. With a cross-sectional area of 53934.16 mm² and a linear mass of 421 kg/m, the UB 457x279x421 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 2576800000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 11120000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 293200000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the UB 457x279x421 provides a y-axis shear area (at strong bending axis) of 38354 mm² for web shear verification and a torsion constant of 57310000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 17600000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.