Steel Section Catalog
HSS 88.9x5.5
AISC — 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.
The HSS 88.9x5.5 steel profile weighs 10.6 kg/m (7.12 lb/ft). Cross-sectional area: 1,342.7 mm². Moment of inertia Ix = 118.3 cm⁴, Iy = 118.3 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 5.1 mm ≈ 6 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Thickness (t) | 5.1 mm | 0.20 in |
| Diameter (d) | 88.9 mm | 3.50 in |
| Weight | 10.6 kg/m | 7.12 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,342.7 mm² | 2.081 in² |
| Moment of inertia (Ix) | 118.3 cm⁴ | 2.84 in⁴ |
| Moment of inertia (Iy) | 118.3 cm⁴ | 2.84 in⁴ |
| Elastic section modulus (Sx) | 26.61 cm³ | 1.624 in³ |
| Elastic section modulus (Sy) | 26.61 cm³ | 1.624 in³ |
| Plastic section modulus (Zx) | 35.86 cm³ | 2.188 in³ |
| Plastic section modulus (Zy) | 35.86 cm³ | 2.188 in³ |
| Radius of gyration (rx) | 2.97 cm | 1.169 in |
| Radius of gyration (ry) | 2.97 cm | 1.169 in |
Beam Calculator— HSS 88.9x5.5
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mfixed @ 0mfixed @ 6m→kN/m
Results — HSS 88.9x5.5
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
71.32 mm
L/84
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
