HA178×127×7.9
Rectangular 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 |
|---|---|---|
| Height | 177.8 mm | 7 in |
| Width | 127 mm | 5 in |
| Design wall thickness | 7.15 mm | 0.281496 in |
| Nominal wall thickness | 7.94 mm | 0.312598 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 17,400,000 mm⁴ | 41.8037 in⁴ |
| Elastic modulus, Sₓ | 196,000 mm³ | 11.9607 in³ |
| Plastic modulus, Zₓ | 239,000 mm³ | 14.5847 in³ |
| Radius of gyration, rₓ | 65.8 mm | 2.5906 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 | 10,300,000 mm⁴ | 24.7458 in⁴ |
| Elastic modulus, S_y | 163,000 mm³ | 9.9469 in³ |
| Plastic modulus, Z_y | 190,000 mm³ | 11.5945 in³ |
| Radius of gyration, r_y | 50.7 mm | 1.9961 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 21,100,000 mm⁴ | 50.693 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 34.7 kg/m | 23.4 lb/ft |