Steel Section Catalog
U 90x30x4.25
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.
The U 90x30x4.25 steel profile weighs 7.0 kg/m (4.71 lb/ft), has a depth of 90 mm (3.54 in), flange width 30 mm (1.18 in). Cross-sectional area: 583.3 mm². Moment of inertia Ix = 62.6 cm⁴, Iy = 3.53 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 4.25 mm ≈ 8 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 90 mm | 3.54 in |
| Width (b) | 30 mm | 1.18 in |
| Thickness (t) | 4.3 mm | 0.17 in |
| Weight | 7.0 kg/m | 4.71 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 583.3 mm² | 0.904 in² |
| Moment of inertia (Ix) | 62.6 cm⁴ | 1.50 in⁴ |
| Moment of inertia (Iy) | 3.53 cm⁴ | 0.08 in⁴ |
| Elastic section modulus (Sx) | 13.91 cm³ | 0.849 in³ |
| Elastic section modulus (Sy) | 1.4 cm³ | 0.085 in³ |
| Plastic section modulus (Zx) | 16 cm³ | 0.976 in³ |
| Plastic section modulus (Zy) | 1.68 cm³ | 0.103 in³ |
| Radius of gyration (rx) | 3.28 cm | 1.291 in |
| Radius of gyration (ry) | 0.78 cm | 0.307 in |
Beam Calculator— U 90x30x4.25
3D preview unavailable
Your device does not support WebGL. The 2D diagram below is still fully functional.
mfixed @ 0mfixed @ 6m→kN/m
Results — U 90x30x4.25
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
134.78 mm
L/45
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
