Steel Section Catalog
UB 406x178x54
EN — Wide Flange (I-beam)
Wide flange beams (W shapes / I-beams) are the most common structural steel profile used in building construction. They are used for beams, columns, and girders in steel-framed buildings and bridges. Designed per AISC 360, Eurocode 3, and NBR 8800.
The UB 406x178x54 steel profile weighs 54.1 kg/m (36.36 lb/ft), has a depth of 402.6 mm (15.85 in), flange width 177.7 mm (7.00 in). Cross-sectional area: 6,806 mm². Moment of inertia Ix = 18,406.12 cm⁴, Iy = 1,020.83 cm⁴.
Cross-section (not to scale)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 402.6 mm | 15.85 in |
| Width (b) | 177.7 mm | 7.00 in |
| Web thickness (tw) | 7.7 mm | 0.30 in |
| Flange thickness (tf) | 10.9 mm | 0.43 in |
| Fillet radius (r) | 10.2 mm | 0.40 in |
| Weight | 54.1 kg/m | 36.36 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 6,806 mm² | 10.549 in² |
| Moment of inertia (Ix) | 18,406.12 cm⁴ | 442.21 in⁴ |
| Moment of inertia (Iy) | 1,020.83 cm⁴ | 24.53 in⁴ |
| Elastic section modulus (Sx) | 914.36 cm³ | 55.798 in³ |
| Elastic section modulus (Sy) | 114.89 cm³ | 7.011 in³ |
| Plastic section modulus (Zx) | 1,037.84 cm³ | 63.333 in³ |
| Plastic section modulus (Zy) | 177.74 cm³ | 10.846 in³ |
| Radius of gyration (rx) | 16.45 cm | 6.476 in |
| Radius of gyration (ry) | 3.87 cm | 1.524 in |
Beam Calculator— UB 406x178x54
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mfixed @ 0mfixed @ 6m→kN/m
Results — UB 406x178x54
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
0.46 mm
L/13089
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
