Back to All Sections

HP 400x122

Production class: hot rolled (ASTM A 6/A 6M)

Section geometry

HP shape
Height (h):
348mm
Width (b):
390mm
Web thickness (tw):
14mm
Flange thickness (tf):
14mm
Radius (r):
20mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
3.512E8
Z-axis:
1.385E8
Elastic section modulus (Wel):mm³
Y-axis:
2.018E6
Z-axis:
7.104E5
Plastic section modulus (Wpl):mm³
Y-axis:
2.235E6
Z-axis:
1.084E6
Radius of gyration (i):mm
Y-axis:
149
Z-axis:
93
Plastic shear area (Av):mm²
Y-axis:
10920
Z-axis:
5579
Weight per meter:
122kg/m
Area (A):
15590mm²
Surface area per meter:
2.194m²/m
Torsion constant (It):
1.191E6mm⁴
Warping constant (Iw):
3.860E12mm⁶

Profile overview for HP 400x122

The HP 400x122 is a structural steel cross-section utilized in commercial construction, industrial framing, and mechanical engineering. Manufactured as a hot rolled section, it complies with ASTM A 6/A 6M 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 348 mm and a flange width (b) of 390 mm, supported by a 14 mm thick web and 14 mm thick flanges. With a cross-sectional area of 15590 mm² and a linear mass of 122 kg/m, the HP 400x122 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 (Iy) of 351200000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 2235000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 138500000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the HP 400x122 provides a y-axis shear area (at strong bending axis) of 10920 mm² for web shear verification and a torsion constant of 1191000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 3860000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.