IPN 550
IPN taper flange beams from Eurocode 3 UK National Annex and ArcelorMittal Sections 2026-1.
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Depth, d | 550 mm | 21.6535 in |
| Flange width, b_f | 200 mm | 7.874 in |
| Web thickness, t_w | 19 mm | 0.748031 in |
| Flange thickness, t_f | 30 mm | 1.1811 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 991,800,000 mm⁴ | 2,382.809 in⁴ |
| Elastic modulus, Sₓ | 3,610,000 mm³ | 220.2957 in³ |
| Plastic modulus, Zₓ | 4,240,000 mm³ | 258.7407 in³ |
| Radius of gyration, rₓ | 216 mm | 8.5039 in |
| Distance to top fibre | 275 mm | 10.8268 in |
| Distance to bottom fibre | 275 mm | 10.8268 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 34,900,000 mm⁴ | 83.8476 in⁴ |
| Elastic modulus, S_y | 349,000 mm³ | 21.2973 in³ |
| Plastic modulus, Z_y | 592,000 mm³ | 36.1261 in³ |
| Radius of gyration, r_y | 40 mm | 1.5748 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 5,440,000 mm⁴ | 13.0697 in⁴ |
| Warping constant, C_w | 2.39000e+12 mm⁶ | 8,900.115 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 166 kg/m | 111.5469 lb/ft |