Steel Section Catalog
U 300x100x3.35
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 300x100x3.35 (UK / Australia)
The U 300x100x3.35 steel profile weighs 12.8 kg/m (8.62 lb/ft), has a depth of 300 mm (11.81 in), flange width 100 mm (3.94 in). Cross-sectional area: 1,641.3 mm². Moment of inertia Ix = 2,153.48 cm⁴, Iy = 142.06 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 3.35 mm ≈ 10 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 300 mm | 11.81 in |
| Width (b) | 100 mm | 3.94 in |
| Thickness (t) | 3.4 mm | 0.13 in |
| Weight | 12.8 kg/m | 8.62 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,641.3 mm² | 2.544 in² |
| Moment of inertia (Ix) | 2,153.48 cm⁴ | 51.74 in⁴ |
| Moment of inertia (Iy) | 142.06 cm⁴ | 3.41 in⁴ |
| Elastic section modulus (Sx) | 143.57 cm³ | 8.761 in³ |
| Elastic section modulus (Sy) | 17.55 cm³ | 1.071 in³ |
| Plastic section modulus (Zx) | 165.1 cm³ | 10.075 in³ |
| Plastic section modulus (Zy) | 21.06 cm³ | 1.285 in³ |
| Radius of gyration (rx) | 11.45 cm | 4.508 in |
| Radius of gyration (ry) | 2.94 cm | 1.157 in |
Beam Calculator— U 300x100x3.35
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 300x100x3.35
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
3.92 mm
L/1531
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
