Steel Section Catalog
UB 305x127x37
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 305x127x37 steel profile weighs 37.0 kg/m (24.86 lb/ft), has a depth of 304.4 mm (11.98 in), flange width 123.4 mm (4.86 in). Cross-sectional area: 4,650.1 mm². Moment of inertia Ix = 7,038.32 cm⁴, Iy = 335.95 cm⁴.
Cross-section (not to scale)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 304.4 mm | 11.98 in |
| Width (b) | 123.4 mm | 4.86 in |
| Web thickness (tw) | 7.1 mm | 0.28 in |
| Flange thickness (tf) | 10.7 mm | 0.42 in |
| Fillet radius (r) | 8.9 mm | 0.35 in |
| Weight | 37.0 kg/m | 24.86 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 4,650.1 mm² | 7.208 in² |
| Moment of inertia (Ix) | 7,038.32 cm⁴ | 169.10 in⁴ |
| Moment of inertia (Iy) | 335.95 cm⁴ | 8.07 in⁴ |
| Elastic section modulus (Sx) | 462.44 cm³ | 28.220 in³ |
| Elastic section modulus (Sy) | 54.45 cm³ | 3.323 in³ |
| Plastic section modulus (Zx) | 529.95 cm³ | 32.340 in³ |
| Plastic section modulus (Zy) | 85.03 cm³ | 5.189 in³ |
| Radius of gyration (rx) | 12.3 cm | 4.843 in |
| Radius of gyration (ry) | 2.69 cm | 1.059 in |
Beam Calculator— UB 305x127x37
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mfixed @ 0mfixed @ 6m→kN/m
Results — UB 305x127x37
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
1.20 mm
L/5005
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
