Steel Section Catalog
UB 203x133x25
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 203x133x25 steel profile weighs 25.1 kg/m (16.87 lb/ft), has a depth of 203.2 mm (8.00 in), flange width 133.2 mm (5.24 in). Cross-sectional area: 3,147.2 mm². Moment of inertia Ix = 2,298.1 cm⁴, Iy = 307.51 cm⁴.
Cross-section (not to scale)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 203.2 mm | 8.00 in |
| Width (b) | 133.2 mm | 5.24 in |
| Web thickness (tw) | 5.7 mm | 0.22 in |
| Flange thickness (tf) | 7.8 mm | 0.31 in |
| Fillet radius (r) | 7.6 mm | 0.30 in |
| Weight | 25.1 kg/m | 16.87 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 3,147.2 mm² | 4.878 in² |
| Moment of inertia (Ix) | 2,298.1 cm⁴ | 55.21 in⁴ |
| Moment of inertia (Iy) | 307.51 cm⁴ | 7.39 in⁴ |
| Elastic section modulus (Sx) | 226.19 cm³ | 13.803 in³ |
| Elastic section modulus (Sy) | 46.17 cm³ | 2.817 in³ |
| Plastic section modulus (Zx) | 253.16 cm³ | 15.449 in³ |
| Plastic section modulus (Zy) | 70.72 cm³ | 4.316 in³ |
| Radius of gyration (rx) | 8.55 cm | 3.366 in |
| Radius of gyration (ry) | 3.13 cm | 1.232 in |
Beam Calculator— UB 203x133x25
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mfixed @ 0mfixed @ 6m→kN/m
Results — UB 203x133x25
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
3.67 mm
L/1634
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
