HD 400x634

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

474mm

Width (b):

424mm

Web thickness (t_w):

47.6mm

Flange thickness (t_f):

77.1mm

Radius (r):

20mm

Section properties

Moment of inertia (I):mm⁴

Y-axis:

2.745E9

Z-axis:

9.826E8

Elastic section modulus (W_el):mm³

Y-axis:

1.158E7

Z-axis:

4.635E6

Plastic section modulus (W_pl):mm³

Y-axis:

1.424E7

Z-axis:

7.121E6

Radius of gyration (i):mm

Y-axis:

184

Z-axis:

110

Plastic shear area (A_v):mm²

Y-axis:

65380

Z-axis:

22310

Weight per meter:

634kg/m

Area (A):

80800mm²

Surface area per meter:

2.514m²/m

Torsion constant (I_t):

1.396E8mm⁴

Warping constant (I_w):

3.857E13mm⁶

Profile overview for HD 400x634

The HD 400x634 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 474 mm and a flange width (b) of 424 mm, supported by a 47.6 mm thick web and 77.1 mm thick flanges. With a cross-sectional area of 80800 mm² and a linear mass of 634 kg/m, the HD 400x634 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 2745200000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 14240000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 982600000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the HD 400x634 provides a y-axis shear area (at strong bending axis) of 65380.8 mm² for web shear verification and a torsion constant of 139600000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 38570000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.