Steel Section Catalog
RHS 50x30x2.5
EN — Rectangular Hollow Section
Rectangular Hollow Sections (RHS) are tubular profiles with excellent torsional resistance and aesthetic appeal. Used for columns, trusses, and exposed structural elements.
The RHS 50x30x2.5 steel profile weighs 2.9 kg/m (1.92 lb/ft), has a depth of 50 mm (1.97 in), flange width 30 mm (1.18 in). Cross-sectional area: 375 mm². Moment of inertia Ix = 12.27 cm⁴, Iy = 5.39 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 2.5 mm ≈ 12 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 50 mm | 1.97 in |
| Width (b) | 30 mm | 1.18 in |
| Thickness (t) | 2.5 mm | 0.10 in |
| Fillet radius (r) | 5 mm | 0.20 in |
| Weight | 2.9 kg/m | 1.92 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 375 mm² | 0.581 in² |
| Moment of inertia (Ix) | 12.27 cm⁴ | 0.29 in⁴ |
| Moment of inertia (Iy) | 5.39 cm⁴ | 0.13 in⁴ |
| Elastic section modulus (Sx) | 4.91 cm³ | 0.300 in³ |
| Elastic section modulus (Sy) | 3.59 cm³ | 0.219 in³ |
| Plastic section modulus (Zx) | 6.09 cm³ | 0.372 in³ |
| Plastic section modulus (Zy) | 4.22 cm³ | 0.258 in³ |
| Radius of gyration (rx) | 1.81 cm | 0.713 in |
| Radius of gyration (ry) | 1.2 cm | 0.472 in |
Beam Calculator— RHS 50x30x2.5
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mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 50x30x2.5
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
687.65 mm
L/9
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
