Steel Section Catalog
U 250x100x4.25
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 250x100x4.25 (UK / Australia)
The U 250x100x4.25 steel profile weighs 14.5 kg/m (9.73 lb/ft), has a depth of 250 mm (9.84 in), flange width 100 mm (3.94 in). Cross-sectional area: 1,858.3 mm². Moment of inertia Ix = 1,754.57 cm⁴, Iy = 167.18 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 4.25 mm ≈ 8 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 250 mm | 9.84 in |
| Width (b) | 100 mm | 3.94 in |
| Thickness (t) | 4.3 mm | 0.17 in |
| Weight | 14.5 kg/m | 9.73 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,858.3 mm² | 2.880 in² |
| Moment of inertia (Ix) | 1,754.57 cm⁴ | 42.15 in⁴ |
| Moment of inertia (Iy) | 167.18 cm⁴ | 4.02 in⁴ |
| Elastic section modulus (Sx) | 140.37 cm³ | 8.566 in³ |
| Elastic section modulus (Sy) | 21.15 cm³ | 1.291 in³ |
| Plastic section modulus (Zx) | 161.42 cm³ | 9.850 in³ |
| Plastic section modulus (Zy) | 25.38 cm³ | 1.549 in³ |
| Radius of gyration (rx) | 9.72 cm | 3.827 in |
| Radius of gyration (ry) | 3 cm | 1.181 in |
Beam Calculator— U 250x100x4.25
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mfixed @ 0mfixed @ 6m→kN/m
Results — U 250x100x4.25
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
4.81 mm
L/1248
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
