Steel Section Catalog
RHS 50x40x3 — Dimensions & Section Properties
BR — 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.
Also known as: PTR 50x40 cal 11 (México) · Caño estructural 50x40 (Argentina)
The RHS 50x40x3 steel profile weighs 3.8 kg/m (2.54 lb/ft), has a depth of 50 mm (1.97 in), flange width 40 mm (1.57 in). Cross-sectional area: 504 mm². Moment of inertia Ix = 17.53 cm⁴, Iy = 12.26 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 3 mm ≈ 11 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 50 mm | 1.97 in |
| Width (b) | 40 mm | 1.57 in |
| Thickness (t) | 3 mm | 0.12 in |
| Fillet radius (r) | 6 mm | 0.24 in |
| Weight | 3.8 kg/m | 2.54 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 504 mm² | 0.781 in² |
| Moment of inertia (Ix) | 17.53 cm⁴ | 0.42 in⁴ |
| Moment of inertia (Iy) | 12.26 cm⁴ | 0.29 in⁴ |
| Elastic section modulus (Sx) | 7.01 cm³ | 0.428 in³ |
| Elastic section modulus (Sy) | 6.13 cm³ | 0.374 in³ |
| Plastic section modulus (Zx) | 8.54 cm³ | 0.521 in³ |
| Plastic section modulus (Zy) | 7.28 cm³ | 0.444 in³ |
| Radius of gyration (rx) | 1.87 cm | 0.736 in |
| Radius of gyration (ry) | 1.56 cm | 0.614 in |
Beam Calculator— RHS 50x40x3
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mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 50x40x3
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
481.32 mm
L/12
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
