Steel Section Catalog
UB 305x127x42
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 305x127x42 steel profile weighs 41.9 kg/m (28.16 lb/ft), has a depth of 307.2 mm (12.09 in), flange width 124.3 mm (4.89 in). Cross-sectional area: 5,272.1 mm². Moment of inertia Ix = 8,063.53 cm⁴, Iy = 388.51 cm⁴.
Cross-section (not to scale)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 307.2 mm | 12.09 in |
| Width (b) | 124.3 mm | 4.89 in |
| Web thickness (tw) | 8 mm | 0.31 in |
| Flange thickness (tf) | 12.1 mm | 0.48 in |
| Fillet radius (r) | 8.9 mm | 0.35 in |
| Weight | 41.9 kg/m | 28.16 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 5,272.1 mm² | 8.172 in² |
| Moment of inertia (Ix) | 8,063.53 cm⁴ | 193.73 in⁴ |
| Moment of inertia (Iy) | 388.51 cm⁴ | 9.33 in⁴ |
| Elastic section modulus (Sx) | 524.97 cm³ | 32.036 in³ |
| Elastic section modulus (Sy) | 62.51 cm³ | 3.815 in³ |
| Plastic section modulus (Zx) | 604.02 cm³ | 36.860 in³ |
| Plastic section modulus (Zy) | 98 cm³ | 5.980 in³ |
| Radius of gyration (rx) | 12.37 cm | 4.870 in |
| Radius of gyration (ry) | 2.71 cm | 1.067 in |
Beam Calculator— UB 305x127x42
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mfixed @ 0mfixed @ 6m→kN/m
Results — UB 305x127x42
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
1.05 mm
L/5734
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
