HD 400x509

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

446mm

Width (b):

416mm

Web thickness (t_w):

39.1mm

Flange thickness (t_f):

62.7mm

Radius (r):

20mm

Section properties

Moment of inertia (I):mm⁴

Y-axis:

2.049E9

Z-axis:

7.541E8

Elastic section modulus (W_el):mm³

Y-axis:

9.187E6

Z-axis:

3.625E6

Plastic section modulus (W_pl):mm³

Y-axis:

1.105E7

Z-axis:

5.556E6

Radius of gyration (i):mm

Y-axis:

177

Z-axis:

107

Plastic shear area (A_v):mm²

Y-axis:

52170

Z-axis:

17830

Weight per meter:

509kg/m

Area (A):

64900mm²

Surface area per meter:

2.443m²/m

Torsion constant (I_t):

7.513E7mm⁴

Warping constant (I_w):

2.763E13mm⁶

Profile overview for HD 400x509

The HD 400x509 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 446 mm and a flange width (b) of 416 mm, supported by a 39.1 mm thick web and 62.7 mm thick flanges. With a cross-sectional area of 64900 mm² and a linear mass of 509 kg/m, the HD 400x509 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 2048800000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 11050000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 754100000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the HD 400x509 provides a y-axis shear area (at strong bending axis) of 52166.4 mm² for web shear verification and a torsion constant of 75130000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 27630000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.