Steel Section Catalog
RHS 40x20x2
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 40x20x2 steel profile weighs 1.7 kg/m (1.13 lb/ft), has a depth of 40 mm (1.57 in), flange width 20 mm (0.79 in). Cross-sectional area: 224 mm². Moment of inertia Ix = 4.45 cm⁴, Iy = 1.44 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 2 mm ≈ 14 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 40 mm | 1.57 in |
| Width (b) | 20 mm | 0.79 in |
| Thickness (t) | 2 mm | 0.08 in |
| Fillet radius (r) | 4 mm | 0.16 in |
| Weight | 1.7 kg/m | 1.13 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 224 mm² | 0.347 in² |
| Moment of inertia (Ix) | 4.45 cm⁴ | 0.11 in⁴ |
| Moment of inertia (Iy) | 1.44 cm⁴ | 0.03 in⁴ |
| Elastic section modulus (Sx) | 2.22 cm³ | 0.135 in³ |
| Elastic section modulus (Sy) | 1.44 cm³ | 0.088 in³ |
| Plastic section modulus (Zx) | 2.82 cm³ | 0.172 in³ |
| Plastic section modulus (Zy) | 1.7 cm³ | 0.104 in³ |
| Radius of gyration (rx) | 1.41 cm | 0.555 in |
| Radius of gyration (ry) | 0.8 cm | 0.315 in |
Beam Calculator— RHS 40x20x2
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mfixed @ 0mfixed @ 6m→kN/m
Results — RHS 40x20x2
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
1896.07 mm
L/3
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
