Steel Section Catalog
CHS 88.9x4
EN — 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 CHS 88.9x4 steel profile weighs 8.4 kg/m (5.63 lb/ft). Cross-sectional area: 1,066.9 mm². Moment of inertia Ix = 96.34 cm⁴, Iy = 96.34 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 4 mm ≈ 8 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Thickness (t) | 4 mm | 0.16 in |
| Diameter (d) | 88.9 mm | 3.50 in |
| Weight | 8.4 kg/m | 5.63 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 1,066.9 mm² | 1.654 in² |
| Moment of inertia (Ix) | 96.34 cm⁴ | 2.31 in⁴ |
| Moment of inertia (Iy) | 96.34 cm⁴ | 2.31 in⁴ |
| Elastic section modulus (Sx) | 21.67 cm³ | 1.322 in³ |
| Elastic section modulus (Sy) | 21.67 cm³ | 1.322 in³ |
| Plastic section modulus (Zx) | 28.85 cm³ | 1.761 in³ |
| Plastic section modulus (Zy) | 28.85 cm³ | 1.761 in³ |
| Radius of gyration (rx) | 3 cm | 1.181 in |
| Radius of gyration (ry) | 3 cm | 1.181 in |
Beam Calculator— CHS 88.9x4
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mfixed @ 0mfixed @ 6m→kN/m
Results — CHS 88.9x4
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
87.58 mm
L/69
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
