HSS 18x8x5/16
Rectangular HSS from AISC Shapes Database v16.0. Also designated HSS457.2X203.2X7.9.
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Height | 457 mm | 18 in |
| Width | 203 mm | 8 in |
| Design wall thickness | 7.39 mm | 0.291 in |
| Nominal wall thickness | 7.95 mm | 0.3125 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 251,000,000 mm⁴ | 604 in⁴ |
| Elastic modulus, Sₓ | 1,100,000 mm³ | 67.1 in³ |
| Plastic modulus, Zₓ | 1,370,000 mm³ | 83.4 in³ |
| Radius of gyration, rₓ | 164 mm | 6.44 in |
| Distance to top fibre | 228.5 mm | 9 in |
| Distance to bottom fibre | 228.5 mm | 9 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 71,600,000 mm⁴ | 172 in⁴ |
| Elastic modulus, S_y | 705,000 mm³ | 43 in³ |
| Plastic modulus, Z_y | 778,000 mm³ | 47.5 in³ |
| Radius of gyration, r_y | 87.4 mm | 3.44 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 180,000,000 mm⁴ | 432 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 79 kg/m | 53.11 lb/ft |