Steel Section Catalog
RHS 100x50x3
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 100x50x3 steel profile weighs 6.6 kg/m (4.44 lb/ft), has a depth of 100 mm (3.94 in), flange width 50 mm (1.97 in). Cross-sectional area: 864 mm². Moment of inertia Ix = 112.12 cm⁴, Iy = 37.44 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 3 mm ≈ 11 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 100 mm | 3.94 in |
| Width (b) | 50 mm | 1.97 in |
| Thickness (t) | 3 mm | 0.12 in |
| Fillet radius (r) | 6 mm | 0.24 in |
| Weight | 6.6 kg/m | 4.44 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 864 mm² | 1.339 in² |
| Moment of inertia (Ix) | 112.12 cm⁴ | 2.69 in⁴ |
| Moment of inertia (Iy) | 37.44 cm⁴ | 0.90 in⁴ |
| Elastic section modulus (Sx) | 22.42 cm³ | 1.368 in³ |
| Elastic section modulus (Sy) | 14.98 cm³ | 0.914 in³ |
| Plastic section modulus (Zx) | 27.8 cm³ | 1.696 in³ |
| Plastic section modulus (Zy) | 17 cm³ | 1.037 in³ |
| Radius of gyration (rx) | 3.6 cm | 1.417 in |
| Radius of gyration (ry) | 2.08 cm | 0.819 in |
Beam Calculator— RHS 100x50x3
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mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 100x50x3
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
75.25 mm
L/80
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
