Steel Section Catalog
UB 203x133x30
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 203x133x30 steel profile weighs 30.0 kg/m (20.16 lb/ft), has a depth of 206.8 mm (8.14 in), flange width 133.9 mm (5.27 in). Cross-sectional area: 3,771.5 mm². Moment of inertia Ix = 2,853.5 cm⁴, Iy = 384.53 cm⁴.
Cross-section (not to scale)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 206.8 mm | 8.14 in |
| Width (b) | 133.9 mm | 5.27 in |
| Web thickness (tw) | 6.4 mm | 0.25 in |
| Flange thickness (tf) | 9.6 mm | 0.38 in |
| Fillet radius (r) | 7.6 mm | 0.30 in |
| Weight | 30.0 kg/m | 20.16 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 3,771.5 mm² | 5.846 in² |
| Moment of inertia (Ix) | 2,853.5 cm⁴ | 68.56 in⁴ |
| Moment of inertia (Iy) | 384.53 cm⁴ | 9.24 in⁴ |
| Elastic section modulus (Sx) | 275.97 cm³ | 16.841 in³ |
| Elastic section modulus (Sy) | 57.43 cm³ | 3.505 in³ |
| Plastic section modulus (Zx) | 309.8 cm³ | 18.905 in³ |
| Plastic section modulus (Zy) | 87.98 cm³ | 5.369 in³ |
| Radius of gyration (rx) | 8.7 cm | 3.425 in |
| Radius of gyration (ry) | 3.19 cm | 1.256 in |
Beam Calculator— UB 203x133x30
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mfixed @ 0mfixed @ 6m→kN/m
Results — UB 203x133x30
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
2.96 mm
L/2029
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
