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RHS 400x300/10

Production class: cold formed (EN 10219-2)

Section geometry

RHS shape
Height (h):
400mm
Width (b):
300mm
Wall thickness (t):
10mm
Outer rounding (router):
25mm
Inner rounding (rinner):
15mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
3.061E8
Z-axis:
1.973E8
Elastic section modulus (Wel):mm³
Y-axis:
1.530E6
Z-axis:
1.315E6
Plastic section modulus (Wpl):mm³
Y-axis:
1.824E6
Z-axis:
1.501E6
Radius of gyration (i):mm
Y-axis:
152
Z-axis:
122
Plastic shear area (Av):mm²
Y-axis:
5681
Z-axis:
7575
Weight per meter:
104.1kg/m
Area (A):
13260mm²
Surface area per meter:
1.357m²/m
Torsion constant (It):
3.841E8mm⁴

Profile overview for RHS 400x300/10

The RHS 400x300/10 is a structural steel cross-section utilized in commercial construction, industrial framing, and mechanical engineering. Manufactured as a cold formed section, it complies with EN 10219-2 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 300 mm, and a uniform wall thickness of 10 mm. With a cross-sectional area of 13256.63706 mm² and a linear mass of 104.0646009 kg/m, the RHS 400x300/10 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 306100000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 1824000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 197300000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the RHS 400x300/10 provides a y-axis shear area (at strong bending axis) of 5681.415883 mm² for web shear verification and a torsion constant of 384100000 mm⁴ for calculating rotational twist under eccentric loading.