HSS 18x8x5/8
Rectangular HSS from AISC Shapes Database v16.0. Also designated HSS457.2X203.2X15.9.
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 | 14.8 mm | 0.581 in |
| Nominal wall thickness | 15.9 mm | 0.625 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 458,000,000 mm⁴ | 1,100 in⁴ |
| Elastic modulus, Sₓ | 2,000,000 mm³ | 122 in³ |
| Plastic modulus, Zₓ | 2,560,000 mm³ | 156 in³ |
| Radius of gyration, rₓ | 159 mm | 6.27 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 | 127,000,000 mm⁴ | 306 in⁴ |
| Elastic modulus, S_y | 1,260,000 mm³ | 76.6 in³ |
| Plastic modulus, Z_y | 1,440,000 mm³ | 87.8 in³ |
| Radius of gyration, r_y | 84.1 mm | 3.31 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 332,000,000 mm⁴ | 797 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 152 kg/m | 101.85 lb/ft |