HD 260x299

Production class: hot rolled (EN 10365)

Section geometry

Height (h):

335mm

Width (b):

278mm

Web thickness (t_w):

31mm

Flange thickness (t_f):

55mm

Radius (r):

24mm

Section properties

Moment of inertia (I):mm⁴

Y-axis:

6.421E8

Z-axis:

1.977E8

Elastic section modulus (W_el):mm³

Y-axis:

3.833E6

Z-axis:

1.422E6

Plastic section modulus (W_pl):mm³

Y-axis:

4.726E6

Z-axis:

2.189E6

Radius of gyration (i):mm

Y-axis:

129

Z-axis:

Plastic shear area (A_v):mm²

Y-axis:

30580

Z-axis:

11810

Weight per meter:

299kg/m

Area (A):

38050mm²

Surface area per meter:

1.679m²/m

Torsion constant (I_t):

3.392E7mm⁴

Warping constant (I_w):

3.860E12mm⁶

Profile overview for HD 260x299

The HD 260x299 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 335 mm and a flange width (b) of 278 mm, supported by a 31 mm thick web and 55 mm thick flanges. With a cross-sectional area of 38050 mm² and a linear mass of 299 kg/m, the HD 260x299 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 642100000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 4726000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (I_z) provides 197700000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the HD 260x299 provides a y-axis shear area (at strong bending axis) of 30580 mm² for web shear verification and a torsion constant of 33920000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 3860000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.