HS178×13
Round HSS from CISC Structural Section Tables SST12.1.
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Design wall thickness | 12.7 mm | 0.5 in |
| Nominal wall thickness | 12.7 mm | 0.5 in |
| Outside diameter | 177.8 mm | 7 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 22,600,000 mm⁴ | 54.2967 in⁴ |
| Elastic modulus, Sₓ | 254,000 mm³ | 15.5 in³ |
| Plastic modulus, Zₓ | 347,000 mm³ | 21.1752 in³ |
| Radius of gyration, rₓ | 58.5 mm | 2.3032 in |
| Distance to top fibre | 88.9 mm | 3.5 in |
| Distance to bottom fibre | 88.9 mm | 3.5 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 22,600,000 mm⁴ | 54.2967 in⁴ |
| Elastic modulus, S_y | 254,000 mm³ | 15.5 in³ |
| Plastic modulus, Z_y | 347,000 mm³ | 21.1752 in³ |
| Radius of gyration, r_y | 58.5 mm | 2.3032 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 45,200,000 mm⁴ | 108.5934 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 51.7 kg/m | 34.7 lb/ft |