Steel Section Catalog
U 120x40x2
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 steel profile weighs 4.4 kg/m (2.95 lb/ft), has a depth of 120 mm (4.72 in), flange width 40 mm (1.57 in). Cross-sectional area: 388 mm². Moment of inertia Ix = 80.3 cm⁴, Iy = 5.17 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 2 mm ≈ 14 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 mm | 0.08 in |
| Weight | 4.4 kg/m | 2.95 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 388 mm² | 0.601 in² |
| Moment of inertia (Ix) | 80.3 cm⁴ | 1.93 in⁴ |
| Moment of inertia (Iy) | 5.17 cm⁴ | 0.12 in⁴ |
| Elastic section modulus (Sx) | 13.38 cm³ | 0.817 in³ |
| Elastic section modulus (Sy) | 1.59 cm³ | 0.097 in³ |
| Plastic section modulus (Zx) | 15.39 cm³ | 0.939 in³ |
| Plastic section modulus (Zy) | 1.91 cm³ | 0.117 in³ |
| Radius of gyration (rx) | 4.55 cm | 1.791 in |
| Radius of gyration (ry) | 1.15 cm | 0.453 in |
Beam Calculator— U 120x40x2
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 120x40x2
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
105.07 mm
L/57
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
