Steel Section Catalog
U 300x100x4.75
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 300x100x4.75 (UK / Australia)
The U 300x100x4.75 steel profile weighs 18.0 kg/m (12.08 lb/ft), has a depth of 300 mm (11.81 in), flange width 100 mm (3.94 in). Cross-sectional area: 2,307.3 mm². Moment of inertia Ix = 2,990.96 cm⁴, Iy = 193.43 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 4.75 mm ≈ 7 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 300 mm | 11.81 in |
| Width (b) | 100 mm | 3.94 in |
| Thickness (t) | 4.8 mm | 0.19 in |
| Weight | 18.0 kg/m | 12.08 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 2,307.3 mm² | 3.576 in² |
| Moment of inertia (Ix) | 2,990.96 cm⁴ | 71.86 in⁴ |
| Moment of inertia (Iy) | 193.43 cm⁴ | 4.65 in⁴ |
| Elastic section modulus (Sx) | 199.4 cm³ | 12.168 in³ |
| Elastic section modulus (Sy) | 23.78 cm³ | 1.451 in³ |
| Plastic section modulus (Zx) | 229.31 cm³ | 13.993 in³ |
| Plastic section modulus (Zy) | 28.54 cm³ | 1.742 in³ |
| Radius of gyration (rx) | 11.39 cm | 4.484 in |
| Radius of gyration (ry) | 2.9 cm | 1.142 in |
Beam Calculator— U 300x100x4.75
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 300x100x4.75
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
2.82 mm
L/2127
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
