Steel Section Catalog
RHS 100x50x4
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 100x50x4 steel profile weighs 8.6 kg/m (5.77 lb/ft), has a depth of 100 mm (3.94 in), flange width 50 mm (1.97 in). Cross-sectional area: 1,136 mm². Moment of inertia Ix = 144.13 cm⁴, Iy = 47.37 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 4 mm ≈ 8 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 100 mm | 3.94 in |
| Width (b) | 50 mm | 1.97 in |
| Thickness (t) | 4 mm | 0.16 in |
| Fillet radius (r) | 8 mm | 0.31 in |
| Weight | 8.6 kg/m | 5.77 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,136 mm² | 1.761 in² |
| Moment of inertia (Ix) | 144.13 cm⁴ | 3.46 in⁴ |
| Moment of inertia (Iy) | 47.37 cm⁴ | 1.14 in⁴ |
| Elastic section modulus (Sx) | 28.83 cm³ | 1.759 in³ |
| Elastic section modulus (Sy) | 18.95 cm³ | 1.156 in³ |
| Plastic section modulus (Zx) | 36.13 cm³ | 2.205 in³ |
| Plastic section modulus (Zy) | 21.93 cm³ | 1.338 in³ |
| Radius of gyration (rx) | 3.56 cm | 1.402 in |
| Radius of gyration (ry) | 2.04 cm | 0.803 in |
Beam Calculator— RHS 100x50x4
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mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 100x50x4
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
58.54 mm
L/102
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
