Steel Section Catalog
RHS 180x80x5 — 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 180x80 cal 6 (México) · Caño estructural 180x80 (Argentina)
The RHS 180x80x5 steel profile weighs 18.9 kg/m (12.70 lb/ft), has a depth of 180 mm (7.09 in), flange width 80 mm (3.15 in). Cross-sectional area: 2,500 mm². Moment of inertia Ix = 1,022.08 cm⁴, Iy = 282.08 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 5 mm ≈ 6 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 180 mm | 7.09 in |
| Width (b) | 80 mm | 3.15 in |
| Thickness (t) | 5 mm | 0.20 in |
| Fillet radius (r) | 10 mm | 0.39 in |
| Weight | 18.9 kg/m | 12.70 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 2,500 mm² | 3.875 in² |
| Moment of inertia (Ix) | 1,022.08 cm⁴ | 24.56 in⁴ |
| Moment of inertia (Iy) | 282.08 cm⁴ | 6.78 in⁴ |
| Elastic section modulus (Sx) | 113.56 cm³ | 6.930 in³ |
| Elastic section modulus (Sy) | 70.52 cm³ | 4.303 in³ |
| Plastic section modulus (Zx) | 142.25 cm³ | 8.681 in³ |
| Plastic section modulus (Zy) | 79.75 cm³ | 4.867 in³ |
| Radius of gyration (rx) | 6.39 cm | 2.516 in |
| Radius of gyration (ry) | 3.36 cm | 1.323 in |
Beam Calculator— RHS 180x80x5
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mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 180x80x5
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
8.26 mm
L/727
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
