Steel Section Catalog
U 100x40x2
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 100x40x2 steel profile weighs 3.8 kg/m (2.53 lb/ft), has a depth of 100 mm (3.94 in), flange width 40 mm (1.57 in). Cross-sectional area: 348 mm². Moment of inertia Ix = 52.19 cm⁴, Iy = 4.93 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 2 mm ≈ 14 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 100 mm | 3.94 in |
| Width (b) | 40 mm | 1.57 in |
| Thickness (t) | 2 mm | 0.08 in |
| Weight | 3.8 kg/m | 2.53 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 348 mm² | 0.539 in² |
| Moment of inertia (Ix) | 52.19 cm⁴ | 1.25 in⁴ |
| Moment of inertia (Iy) | 4.93 cm⁴ | 0.12 in⁴ |
| Elastic section modulus (Sx) | 10.44 cm³ | 0.637 in³ |
| Elastic section modulus (Sy) | 1.55 cm³ | 0.095 in³ |
| Plastic section modulus (Zx) | 12 cm³ | 0.732 in³ |
| Plastic section modulus (Zy) | 1.86 cm³ | 0.114 in³ |
| Radius of gyration (rx) | 3.87 cm | 1.524 in |
| Radius of gyration (ry) | 1.19 cm | 0.469 in |
Beam Calculator— U 100x40x2
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 100x40x2
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
161.67 mm
L/37
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
