Steel Section Catalog
HSS 178x127x6.4
AISC — 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 HSS 178x127x6.4 steel profile weighs 26.8 kg/m (18.01 lb/ft), has a depth of 177.8 mm (7.00 in), flange width 127 mm (5.00 in). Cross-sectional area: 3,457.4 mm². Moment of inertia Ix = 1,557.32 cm⁴, Iy = 920.15 cm⁴.
Cross-section (not to scale)
Gauge equivalent: 5.9 mm ≈ 4 gauge (Manufacturers Standard Gage)
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth (h) | 177.8 mm | 7.00 in |
| Width (b) | 127 mm | 5.00 in |
| Thickness (t) | 5.9 mm | 0.23 in |
| Fillet radius (r) | 11.8 mm | 0.46 in |
| Weight | 26.8 kg/m | 18.01 lb/ft |
Section Properties
| Property | Metric | Imperial |
|---|---|---|
| Area (A) | 3,457.4 mm² | 5.359 in² |
| Moment of inertia (Ix) | 1,557.32 cm⁴ | 37.41 in⁴ |
| Moment of inertia (Iy) | 920.15 cm⁴ | 22.11 in⁴ |
| Elastic section modulus (Sx) | 175.18 cm³ | 10.690 in³ |
| Elastic section modulus (Sy) | 144.91 cm³ | 8.843 in³ |
| Plastic section modulus (Zx) | 210.09 cm³ | 12.821 in³ |
| Plastic section modulus (Zy) | 166.19 cm³ | 10.142 in³ |
| Radius of gyration (rx) | 6.71 cm | 2.642 in |
| Radius of gyration (ry) | 5.16 cm | 2.031 in |
Beam Calculator— HSS 178x127x6.4
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mfixed @ 0mfixed @ 6m→kN/m
Results — HSS 178x127x6.4
Mmax
15.0 kN·m
Vmax
15.0 kN
δmax
5.42 mm
L/1107
R115.0 kN| 15.0 kN·mR215.0 kN| -15.0 kN·m
Standard:
