Steel Section Catalog
U 100x50x4.75
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 100x50x4.75 (UK / Australia)
The U 100x50x4.75 steel profile weighs 6.8 kg/m (4.56 lb/ft), has a depth of 100 mm (3.94 in), flange width 50 mm (1.97 in). Cross-sectional area: 882.3 mm². Moment of inertia Ix = 131.79 cm⁴, Iy = 18.7 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 4.75 mm ≈ 7 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 100 mm | 3.94 in |
| Width (b) | 50 mm | 1.97 in |
| Thickness (t) | 4.8 mm | 0.19 in |
| Weight | 6.8 kg/m | 4.56 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 882.3 mm² | 1.368 in² |
| Moment of inertia (Ix) | 131.79 cm⁴ | 3.17 in⁴ |
| Moment of inertia (Iy) | 18.7 cm⁴ | 0.45 in⁴ |
| Elastic section modulus (Sx) | 26.36 cm³ | 1.609 in³ |
| Elastic section modulus (Sy) | 4.8 cm³ | 0.293 in³ |
| Plastic section modulus (Zx) | 30.31 cm³ | 1.850 in³ |
| Plastic section modulus (Zy) | 5.76 cm³ | 0.351 in³ |
| Radius of gyration (rx) | 3.86 cm | 1.520 in |
| Radius of gyration (ry) | 1.46 cm | 0.575 in |
Beam Calculator— U 100x50x4.75
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 100x50x4.75
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
64.02 mm
L/94
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
