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W 920x420x390

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

Section geometry

W shape
Height (h):
936mm
Width (b):
420mm
Web thickness (tw):
21.3mm
Flange thickness (tf):
36.6mm
Radius (r):
25mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
7.458E9
Z-axis:
4.527E8
Elastic section modulus (Wel):mm³
Y-axis:
1.593E7
Z-axis:
2.156E6
Plastic section modulus (Wpl):mm³
Y-axis:
1.801E7
Z-axis:
3.334E6
Radius of gyration (i):mm
Y-axis:
387
Z-axis:
95
Plastic shear area (Av):mm²
Y-axis:
30744
Z-axis:
21520
Weight per meter:
390kg/m
Area (A):
49700mm²
Surface area per meter:
3.466m²/m
Torsion constant (It):
1.741E7mm⁴
Warping constant (Iw):
9.139E13mm⁶

Profile overview for W 920x420x390

The W 920x420x390 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 936 mm and a flange width (b) of 420 mm, supported by a 21.3 mm thick web and 36.6 mm thick flanges. With a cross-sectional area of 49700 mm² and a linear mass of 390 kg/m, the W 920x420x390 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 7458100000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 18010000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 452700000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the W 920x420x390 provides a y-axis shear area (at strong bending axis) of 30744 mm² for web shear verification and a torsion constant of 17410000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 91390000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.