HD 400x818

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

514mm

Width (b):

437mm

Web thickness (t_w):

60.5mm

Flange thickness (t_f):

97mm

Radius (r):

20mm

Section properties

Moment of inertia (I):mm⁴

Y-axis:

3.925E9

Z-axis:

1.355E9

Elastic section modulus (W_el):mm³

Y-axis:

1.527E7

Z-axis:

6.203E6

Plastic section modulus (W_pl):mm³

Y-axis:

1.927E7

Z-axis:

9.566E6

Radius of gyration (i):mm

Y-axis:

193

Z-axis:

113

Plastic shear area (A_v):mm²

Y-axis:

84778

Z-axis:

29450

Weight per meter:

818kg/m

Area (A):

1.043E5mm²

Surface area per meter:

2.621m²/m

Torsion constant (I_t):

2.821E8mm⁴

Warping constant (I_w):

5.865E13mm⁶

Profile overview for HD 400x818

The HD 400x818 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 514 mm and a flange width (b) of 437 mm, supported by a 60.5 mm thick web and 97 mm thick flanges. With a cross-sectional area of 104330 mm² and a linear mass of 818 kg/m, the HD 400x818 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 3925400000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 19270000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 1355400000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the HD 400x818 provides a y-axis shear area (at strong bending axis) of 84778 mm² for web shear verification and a torsion constant of 282100000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 58650000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.