S18x70
American standard beams from AISC Shapes Database v16.0. Also designated S460X104.
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 457 mm | 18 in |
| Flange width, b_f | 159 mm | 6.25 in |
| Web thickness, t_w | 18.1 mm | 0.711 in |
| Flange thickness, t_f | 17.6 mm | 0.691 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 384,000,000 mm⁴ | 923 in⁴ |
| Elastic modulus, Sₓ | 1,690,000 mm³ | 103 in³ |
| Plastic modulus, Zₓ | 2,030,000 mm³ | 124 in³ |
| Radius of gyration, rₓ | 170 mm | 6.7 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 | 9,990,000 mm⁴ | 24 in⁴ |
| Elastic modulus, S_y | 126,000 mm³ | 7.69 in³ |
| Plastic modulus, Z_y | 234,000 mm³ | 14.3 in³ |
| Radius of gyration, r_y | 27.4 mm | 1.08 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 1,710,000 mm⁴ | 4.1 in⁴ |
| Warping constant, C_w | 4.83000e+11 mm⁶ | 1,800 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 104 kg/m | 70 lb/ft |