Steel Section Catalog
U 75x40x4.75
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 75x40x4.75 (UK / Australia)
The U 75x40x4.75 steel profile weighs 5.1 kg/m (3.43 lb/ft), has a depth of 75 mm (2.95 in), flange width 40 mm (1.57 in). Cross-sectional area: 668.6 mm². Moment of inertia Ix = 55.1 cm⁴, Iy = 8.72 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 4.75 mm ≈ 7 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 75 mm | 2.95 in |
| Width (b) | 40 mm | 1.57 in |
| Thickness (t) | 4.8 mm | 0.19 in |
| Weight | 5.1 kg/m | 3.43 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 668.6 mm² | 1.036 in² |
| Moment of inertia (Ix) | 55.1 cm⁴ | 1.32 in⁴ |
| Moment of inertia (Iy) | 8.72 cm⁴ | 0.21 in⁴ |
| Elastic section modulus (Sx) | 14.69 cm³ | 0.896 in³ |
| Elastic section modulus (Sy) | 2.8 cm³ | 0.171 in³ |
| Plastic section modulus (Zx) | 16.9 cm³ | 1.031 in³ |
| Plastic section modulus (Zy) | 3.36 cm³ | 0.205 in³ |
| Radius of gyration (rx) | 2.87 cm | 1.130 in |
| Radius of gyration (ry) | 1.14 cm | 0.449 in |
Beam Calculator— U 75x40x4.75
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 75x40x4.75
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
153.13 mm
L/39
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
