W21x55
Wide flange from AISC Shapes Database v16.0. Also designated W530X82.
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 528 mm | 20.8 in |
| Flange width, b_f | 209 mm | 8.22 in |
| Web thickness, t_w | 9.53 mm | 0.375 in |
| Flange thickness, t_f | 13.3 mm | 0.522 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 475,000,000 mm⁴ | 1,140 in⁴ |
| Elastic modulus, Sₓ | 1,800,000 mm³ | 110 in³ |
| Plastic modulus, Zₓ | 2,060,000 mm³ | 126 in³ |
| Radius of gyration, rₓ | 213 mm | 8.4 in |
| Distance to top fibre | 264 mm | 10.4 in |
| Distance to bottom fibre | 264 mm | 10.4 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 20,100,000 mm⁴ | 48.4 in⁴ |
| Elastic modulus, S_y | 193,000 mm³ | 11.8 in³ |
| Plastic modulus, Z_y | 302,000 mm³ | 18.4 in³ |
| Radius of gyration, r_y | 43.9 mm | 1.73 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 516,000 mm⁴ | 1.24 in⁴ |
| Warping constant, C_w | 1.34000e+12 mm⁶ | 4,980 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 82 kg/m | 55 lb/ft |