HD 400x900

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

531mm

Width (b):

442mm

Web thickness (t_w):

65.9mm

Flange thickness (t_f):

106mm

Radius (r):

20mm

Section properties

Moment of inertia (I):mm⁴

Y-axis:

4.506E9

Z-axis:

1.534E9

Elastic section modulus (W_el):mm³

Y-axis:

1.697E7

Z-axis:

6.939E6

Plastic section modulus (W_pl):mm³

Y-axis:

2.164E7

Z-axis:

1.071E7

Radius of gyration (i):mm

Y-axis:

197

Z-axis:

115

Plastic shear area (A_v):mm²

Y-axis:

93704

Z-axis:

32590

Weight per meter:

900kg/m

Area (A):

1.149E5mm²

Surface area per meter:

2.664m²/m

Torsion constant (I_t):

3.688E8mm⁴

Warping constant (I_w):

6.888E13mm⁶

Profile overview for HD 400x900

The HD 400x900 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 531 mm and a flange width (b) of 442 mm, supported by a 65.9 mm thick web and 106 mm thick flanges. With a cross-sectional area of 114920 mm² and a linear mass of 900 kg/m, the HD 400x900 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 4505500000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 21640000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 1533600000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the HD 400x900 provides a y-axis shear area (at strong bending axis) of 93704 mm² for web shear verification and a torsion constant of 368800000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 68880000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.