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.
Also known as: PTR 40x20 cal 15 (México) · Caño estructural 40x20 (Argentina)
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:
