Steel Section Catalog
U 120x40x2.66
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.
The U 120x40x2.66 steel profile weighs 5.8 kg/m (3.93 lb/ft), has a depth of 120 mm (4.72 in), flange width 40 mm (1.57 in). Cross-sectional area: 510.8 mm². Moment of inertia Ix = 104.2 cm⁴, Iy = 6.56 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 2.66 mm ≈ 12 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 120 mm | 4.72 in |
| Width (b) | 40 mm | 1.57 in |
| Thickness (t) | 2.7 mm | 0.10 in |
| Weight | 5.8 kg/m | 3.93 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 510.8 mm² | 0.792 in² |
| Moment of inertia (Ix) | 104.2 cm⁴ | 2.50 in⁴ |
| Moment of inertia (Iy) | 6.56 cm⁴ | 0.16 in⁴ |
| Elastic section modulus (Sx) | 17.37 cm³ | 1.060 in³ |
| Elastic section modulus (Sy) | 2 cm³ | 0.122 in³ |
| Plastic section modulus (Zx) | 19.97 cm³ | 1.219 in³ |
| Plastic section modulus (Zy) | 2.4 cm³ | 0.146 in³ |
| Radius of gyration (rx) | 4.52 cm | 1.780 in |
| Radius of gyration (ry) | 1.13 cm | 0.445 in |
Beam Calculator— U 120x40x2.66
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 120x40x2.66
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
80.97 mm
L/74
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
