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W 1000x400x321

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

Section geometry

W shape
Height (h):
990mm
Width (b):
400mm
Web thickness (tw):
16.5mm
Flange thickness (tf):
31mm
Radius (r):
30mm

Section properties

Moment of inertia (I):mm⁴
Y-axis:
6.964E9
Z-axis:
3.312E8
Elastic section modulus (Wel):mm³
Y-axis:
1.406E7
Z-axis:
1.656E6
Plastic section modulus (Wpl):mm³
Y-axis:
1.579E7
Z-axis:
2.554E6
Radius of gyration (i):mm
Y-axis:
412
Z-axis:
90
Plastic shear area (Av):mm²
Y-axis:
24800
Z-axis:
18450
Weight per meter:
321kg/m
Area (A):
40800mm²
Surface area per meter:
3.495m²/m
Torsion constant (It):
1.033E7mm⁴
Warping constant (Iw):
7.602E13mm⁶

Profile overview for W 1000x400x321

The W 1000x400x321 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 990 mm and a flange width (b) of 400 mm, supported by a 16.5 mm thick web and 31 mm thick flanges. With a cross-sectional area of 40800 mm² and a linear mass of 321 kg/m, the W 1000x400x321 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 6964400000 mm⁴ governs major deflection and serviceability limits. To calculate the ultimate bending resistance, engineers may utilize the strong-axis plastic section modulus of 15790000 mm³. For lateral stability and column buckling verifications, the weak-axis moment of inertia (Iz) provides 331200000 mm⁴ of lateral stiffness.

Advanced analysis: For complex load cases, the W 1000x400x321 provides a y-axis shear area (at strong bending axis) of 24800 mm² for web shear verification and a torsion constant of 10330000 mm⁴ for calculating rotational twist under eccentric loading. Additionally, a warping constant of 76020000000000 mm⁶ is available for rigorous lateral-torsional buckling (LTB) checks.