IPN 450 — Dimensions, Weight & Section Properties
IPN I-beam per EN 10365 (DIN 1025-1)
IPN 450 is a IPN I-beam per EN 10365 (DIN 1025-1), 450 mm tall and 170 mm wide, weighing 115 kg per meter. All dimensions and section properties below are the standard published values used in structural design across Europe.
Typical uses: floor beams, columns, frames, and general steel construction. For a quick strength check, use the deflection example below or open the beam calculator with your own span and load.
Dimensions (mm)
| Height h | 450 mm |
| Flange width b | 170 mm |
| Web thickness tₘ | 16.2 mm |
| Flange thickness tᶠ | 24.3 mm |
| Root radius r | 16.2 mm |
Weight & Cross-Section
| Weight per meter | 115 kg/m |
| Weight of a 6 m bar | 690 kg |
| Weight of a 12 m bar | 1,380 kg |
| Cross-section area A | 147 cm² |
Section Properties (strong / weak axis)
| Moment of inertia Iₓ | 45,850 cm⁴ |
| Section modulus Wₓ | 2,040 cm³ |
| Radius of gyration iₓ | 17.7 cm |
| Moment of inertia Iᵧ | 1,730 cm⁴ |
| Section modulus Wᵧ | 203 cm³ |
| Radius of gyration iᵧ | 3.43 cm |
Compared with the neighbouring sizes
| Profile | h × b (mm) | G (kg/m) | Iₓ (cm⁴) | Wₓ (cm³) | Δ weight | Δ Iₓ |
|---|---|---|---|---|---|---|
| IPN 400 | 400 × 155 | 92.4 | 29,210 | 1,460 | −20 % | −36 % |
| IPN 450 (this page) | 450 × 170 | 115 | 45,850 | 2,040 | — | — |
| IPN 500 | 500 × 185 | 141 | 68,740 | 2,750 | +23 % | +50 % |
Deflection example
A simply supported IPN 450 spanning 9 m with a 10 kN point load at midspan deflects 1.58 mm (E = 210 GPa, Ix = 45,850 cm⁴). The L/360 serviceability limit for this span is 25 mm — the profile passes this quick check.
Calculate your own span and load →
Frequently Asked Questions
How much does IPN 450 weigh?
IPN 450 weighs 115 kg per meter. A standard 6 m bar weighs 690 kg and a 12 m bar 1,380 kg. The weight follows from the cross-section area of 147 cm² multiplied by the steel density of 7,850 kg/m³.
What are the dimensions of IPN 450?
IPN 450 is 450 mm tall and 170 mm wide, with a web thickness of 16.2 mm, a flange thickness of 24.3 mm, and a root radius of 16.2 mm, per EN 10365 (DIN 1025-1).
What is the moment of inertia of IPN 450?
About the strong axis, Ix = 45,850 cm⁴ with a section modulus Wx = 2,040 cm³. About the weak axis, Iy = 1,730 cm⁴ and Wy = 203 cm³. Use the beam deflection calculator to turn these into deflection and stress for your span and load.
IPN 450 or IPN 500 — what does one size up change?
IPN 500 is about 23% heavier (141 vs 115 kg/m) but about 50% stiffer (Ix 68,740 vs 45,850 cm⁴). Going one size up is usually the cheapest way to cut deflection, because stiffness grows much faster than weight.
Values are entered from the governing standard’s published tables and cross-checked programmatically against its mass and section formulas before publication. Spotted an error? Write to advertising@metalabout.net — verified corrections ship within days. About