HD 400x551

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

455mm

Width (b):

418mm

Web thickness (t_w):

42mm

Flange thickness (t_f):

67.6mm

Radius (r):

20mm

Section properties

Moment of inertia (I):mm⁴

Y-axis:

2.265E9

Z-axis:

8.250E8

Elastic section modulus (W_el):mm³

Y-axis:

9.954E6

Z-axis:

3.947E6

Plastic section modulus (W_pl):mm³

Y-axis:

1.207E7

Z-axis:

6.055E6

Radius of gyration (i):mm

Y-axis:

179

Z-axis:

108

Plastic shear area (A_v):mm²

Y-axis:

56510

Z-axis:

19310

Weight per meter:

551kg/m

Area (A):

70140mm²

Surface area per meter:

2.464m²/m

Torsion constant (I_t):

9.395E7mm⁴

Warping constant (I_w):

3.087E13mm⁶

Profile overview for HD 400x551

The HD 400x551 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 455 mm and a flange width (b) of 418 mm, supported by a 42 mm thick web and 67.6 mm thick flanges. With a cross-sectional area of 70140 mm² and a linear mass of 551 kg/m, the HD 400x551 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 2264600000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 12070000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 825000000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the HD 400x551 provides a y-axis shear area (at strong bending axis) of 56513.6 mm² for web shear verification and a torsion constant of 93950000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 30870000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.