Back to All Sections

SHS 400/20

Production class: hot finished (EN 10210-2)

Section geometry

SHS shape
Height (h):
400mm
Width (b):
400mm
Wall thickness (t):
20mm
Outer rounding (router):
30mm
Inner rounding (rinner):
20mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
7.153E8
Z-axis:
7.153E8
Elastic section modulus (Wel):mm³
Y-axis:
3.577E6
Z-axis:
3.577E6
Plastic section modulus (Wpl):mm³
Y-axis:
4.247E6
Z-axis:
4.247E6
Radius of gyration (i):mm
Y-axis:
154.5
Z-axis:
154.5
Plastic shear area (Av):mm²
Y-axis:
14990
Z-axis:
14990
Weight per meter:
235.3kg/m
Area (A):
29970mm²
Surface area per meter:
1.548m²/m
Torsion constant (It):
1.125E9mm⁴

Profile overview for SHS 400/20

The SHS 400/20 is a structural steel cross-section utilized in commercial construction, industrial framing, and mechanical engineering. Manufactured as a hot finished section, it complies with EN 10210-2 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 rectangular/square hollow section is defined by a depth of 400 mm, a width of 400 mm, and a uniform wall thickness of 20 mm. With a cross-sectional area of 29970.79633 mm² and a linear mass of 235.2707512 kg/m, the SHS 400/20 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 715300000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 4247000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 715300000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the SHS 400/20 provides a y-axis shear area (at strong bending axis) of 14985.39816 mm² for web shear verification and a torsion constant of 1125000000 mm⁴ for calculating rotational twist under eccentric loading.