Steel Section Catalog
U 75x40x3.35
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 75x40x3.35 (UK / Australia)
The U 75x40x3.35 steel profile weighs 3.7 kg/m (2.51 lb/ft), has a depth of 75 mm (2.95 in), flange width 40 mm (1.57 in). Cross-sectional area: 485.6 mm². Moment of inertia Ix = 41.81 cm⁴, Iy = 6.85 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 3.35 mm ≈ 10 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 75 mm | 2.95 in |
| Width (b) | 40 mm | 1.57 in |
| Thickness (t) | 3.4 mm | 0.13 in |
| Weight | 3.7 kg/m | 2.51 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 485.6 mm² | 0.753 in² |
| Moment of inertia (Ix) | 41.81 cm⁴ | 1.00 in⁴ |
| Moment of inertia (Iy) | 6.85 cm⁴ | 0.16 in⁴ |
| Elastic section modulus (Sx) | 11.15 cm³ | 0.680 in³ |
| Elastic section modulus (Sy) | 2.23 cm³ | 0.136 in³ |
| Plastic section modulus (Zx) | 12.82 cm³ | 0.782 in³ |
| Plastic section modulus (Zy) | 2.67 cm³ | 0.163 in³ |
| Radius of gyration (rx) | 2.93 cm | 1.154 in |
| Radius of gyration (ry) | 1.19 cm | 0.469 in |
Beam Calculator— U 75x40x3.35
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 75x40x3.35
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
201.81 mm
L/30
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
