CHS 121x5 GOST · Weight & Dimensions
GOST, cold-formed sections · Circular Hollow Section
Circular Hollow Sections (CHS) are round tubular profiles with the most efficient cross-section for compression. Used for columns, trusses, and architectural structures.
Also known as: Caño estructural redondo (Argentina)
The CHS 121x5 steel profile weighs 14.3 kg/m (9.61 lb/ft). Cross-sectional area: 1,822.124 mm². Moment of inertia Ix = 307.051 cm⁴, Iy = 307.051 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 5 mm ≈ 6 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Thickness (t) | 5 mm | 0.20 in |
| Diameter (d) | 121 mm | 4.76 in |
| Weight | 14.3 kg/m | 9.61 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,822.12 mm² | 2.824 in² |
| Moment of inertia (Ix) | 307.05 cm⁴ | 7.38 in⁴ |
| Moment of inertia (Iy) | 307.05 cm⁴ | 7.38 in⁴ |
| Elastic section modulus (Sx) | 50.75 cm³ | 3.097 in³ |
| Elastic section modulus (Sy) | 50.75 cm³ | 3.097 in³ |
| Plastic section modulus (Zx) | 67.32 cm³ | 4.108 in³ |
| Plastic section modulus (Zy) | 67.32 cm³ | 4.108 in³ |
| Radius of gyration (rx) | 4.11 cm | 1.616 in |
| Radius of gyration (ry) | 4.11 cm | 1.616 in |
Beam Calculator— CHS 121x5
drag to orbit
mfixed @ 0mfixed @ 6m→kN/m
Results — CHS 121x5
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
27.48 mm
L/218
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
