Steel Section Catalog
U 127x50x3.75
BR — Cold-formed Channel
Cold-formed channels (U shapes) are similar to C shapes but without stiffening lips. Used for light structural framing, supports, and secondary members.
Also known as: U 127x50x3.75 (UK / Australia)
The U 127x50x3.75 steel profile weighs 8.9 kg/m (6.01 lb/ft), has a depth of 127 mm (5.00 in), flange width 50 mm (1.97 in). Cross-sectional area: 809.1 mm². Moment of inertia Ix = 190.28 cm⁴, Iy = 16.83 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 3.75 mm ≈ 9 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 127 mm | 5.00 in |
| Width (b) | 50 mm | 1.97 in |
| Thickness (t) | 3.8 mm | 0.15 in |
| Weight | 8.9 kg/m | 6.01 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 809.1 mm² | 1.254 in² |
| Moment of inertia (Ix) | 190.28 cm⁴ | 4.57 in⁴ |
| Moment of inertia (Iy) | 16.83 cm⁴ | 0.40 in⁴ |
| Elastic section modulus (Sx) | 29.97 cm³ | 1.829 in³ |
| Elastic section modulus (Sy) | 4.2 cm³ | 0.256 in³ |
| Plastic section modulus (Zx) | 34.46 cm³ | 2.103 in³ |
| Plastic section modulus (Zy) | 5.04 cm³ | 0.308 in³ |
| Radius of gyration (rx) | 4.85 cm | 1.909 in |
| Radius of gyration (ry) | 1.44 cm | 0.567 in |
Beam Calculator— U 127x50x3.75
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 127x50x3.75
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
44.34 mm
L/135
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
