HD 320x245

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

359mm

Width (b):

309mm

Web thickness (t_w):

21mm

Flange thickness (t_f):

40mm

Radius (r):

27mm

Section properties

Moment of inertia (I):mm⁴

Y-axis:

6.813E8

Z-axis:

1.970E8

Elastic section modulus (W_el):mm³

Y-axis:

3.795E6

Z-axis:

1.275E6

Plastic section modulus (W_pl):mm³

Y-axis:

4.435E6

Z-axis:

1.950E6

Radius of gyration (i):mm

Y-axis:

147

Z-axis:

Plastic shear area (A_v):mm²

Y-axis:

24720

Z-axis:

9484

Weight per meter:

245kg/m

Area (A):

31200mm²

Surface area per meter:

1.866m²/m

Torsion constant (I_t):

1.506E7mm⁴

Warping constant (I_w):

5.003E12mm⁶

Profile overview for HD 320x245

The HD 320x245 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 359 mm and a flange width (b) of 309 mm, supported by a 21 mm thick web and 40 mm thick flanges. With a cross-sectional area of 31200 mm² and a linear mass of 245 kg/m, the HD 320x245 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 681300000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 4435000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 197000000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the HD 320x245 provides a y-axis shear area (at strong bending axis) of 24720 mm² for web shear verification and a torsion constant of 15060000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 5003000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.