Steel Section Catalog
U 100x50x3.05
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 100x50x3.05 (UK / Australia)
The U 100x50x3.05 steel profile weighs 4.5 kg/m (3.03 lb/ft), has a depth of 100 mm (3.94 in), flange width 50 mm (1.97 in). Cross-sectional area: 582.1 mm². Moment of inertia Ix = 90.48 cm⁴, Iy = 13.3 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 3.05 mm ≈ 11 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 100 mm | 3.94 in |
| Width (b) | 50 mm | 1.97 in |
| Thickness (t) | 3.0 mm | 0.12 in |
| Weight | 4.5 kg/m | 3.03 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 582.1 mm² | 0.902 in² |
| Moment of inertia (Ix) | 90.48 cm⁴ | 2.17 in⁴ |
| Moment of inertia (Iy) | 13.3 cm⁴ | 0.32 in⁴ |
| Elastic section modulus (Sx) | 18.1 cm³ | 1.105 in³ |
| Elastic section modulus (Sy) | 3.46 cm³ | 0.211 in³ |
| Plastic section modulus (Zx) | 20.81 cm³ | 1.270 in³ |
| Plastic section modulus (Zy) | 4.15 cm³ | 0.253 in³ |
| Radius of gyration (rx) | 3.94 cm | 1.551 in |
| Radius of gyration (ry) | 1.51 cm | 0.594 in |
Beam Calculator— U 100x50x3.05
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 100x50x3.05
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
93.25 mm
L/64
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
