Steel Section Catalog
RHS 20x40x1.2
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 20x40x1.2 steel profile weighs 1.1 kg/m (0.73 lb/ft), has a depth of 20 mm (0.79 in), flange width 40 mm (1.57 in). Cross-sectional area: 138.2 mm². Moment of inertia Ix = 0.96 cm⁴, Iy = 2.87 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 1.2 mm ≈ 18 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 20 mm | 0.79 in |
| Width (b) | 40 mm | 1.57 in |
| Thickness (t) | 1.2 mm | 0.05 in |
| Fillet radius (r) | 1.8 mm | 0.07 in |
| Weight | 1.1 kg/m | 0.73 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 138.2 mm² | 0.214 in² |
| Moment of inertia (Ix) | 0.96 cm⁴ | 0.02 in⁴ |
| Moment of inertia (Iy) | 2.87 cm⁴ | 0.07 in⁴ |
| Elastic section modulus (Sx) | 0.96 cm³ | 0.059 in³ |
| Elastic section modulus (Sy) | 1.44 cm³ | 0.088 in³ |
| Plastic section modulus (Zx) | 1.09 cm³ | 0.067 in³ |
| Plastic section modulus (Zy) | 1.78 cm³ | 0.109 in³ |
| Radius of gyration (rx) | 0.83 cm | 0.327 in |
| Radius of gyration (ry) | 1.44 cm | 0.567 in |
Beam Calculator— RHS 20x40x1.2
3D preview unavailable
Your device does not support WebGL. The 2D diagram below is still fully functional.
mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 20x40x1.2
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
8789.06 mm
L/1
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
