IPN 450
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 | 450 mm | 17.7165 in |
| Flange width, b_f | 170 mm | 6.6929 in |
| Web thickness, t_w | 16.2 mm | 0.637795 in |
| Flange thickness, t_f | 24.3 mm | 0.956693 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 458,500,000 mm⁴ | 1,101.551 in⁴ |
| Elastic modulus, Sₓ | 2,040,000 mm³ | 124.4884 in³ |
| Plastic modulus, Zₓ | 2,400,000 mm³ | 146.457 in³ |
| Radius of gyration, rₓ | 177 mm | 6.9685 in |
| Distance to top fibre | 225 mm | 8.8583 in |
| Distance to bottom fibre | 225 mm | 8.8583 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 17,300,000 mm⁴ | 41.5634 in⁴ |
| Elastic modulus, S_y | 203,000 mm³ | 12.3878 in³ |
| Plastic modulus, Z_y | 345,000 mm³ | 21.0532 in³ |
| Radius of gyration, r_y | 34 mm | 1.3386 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 2,670,000 mm⁴ | 6.4147 in⁴ |
| Warping constant, C_w | 7.91000e+11 mm⁶ | 2,945.603 in⁶ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 115 kg/m | 77.2764 lb/ft |