Profile library · Comparison
Steel round bars: diameters, mass and inertia
Compare solid round bars by diameter, linear mass and geometric properties.
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The values below are recalculated from simplified nominal geometry. Open a designation to inspect its diagram, dimensions and all available properties.
Rounds
Comparison table
Round bars
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| Designation | Main dimensions | A | Mass | Ix | Iy | Wx | Wy |
|---|---|---|---|---|---|---|---|
| Ø 20 | D=20 mm | 3.1416 cm² | 2.4662 kg/m | 0.7854 cm⁴ | 0.7854 cm⁴ | 0.7854 cm³ | 0.7854 cm³ |
| Ø 25 | D=25 mm | 4.9087 cm² | 3.8534 kg/m | 1.9175 cm⁴ | 1.9175 cm⁴ | 1.534 cm³ | 1.534 cm³ |
| Ø 30 | D=30 mm | 7.0686 cm² | 5.5488 kg/m | 3.9761 cm⁴ | 3.9761 cm⁴ | 2.6507 cm³ | 2.6507 cm³ |
| Ø 40 | D=40 mm | 12.566 cm² | 9.8646 kg/m | 12.566 cm⁴ | 12.566 cm⁴ | 6.2832 cm³ | 6.2832 cm³ |
| Ø 50 | D=50 mm | 19.635 cm² | 15.413 kg/m | 30.68 cm⁴ | 30.68 cm⁴ | 12.272 cm³ | 12.272 cm³ |
| Ø 60 | D=60 mm | 28.274 cm² | 22.195 kg/m | 63.617 cm⁴ | 63.617 cm⁴ | 21.206 cm³ | 21.206 cm³ |
| Ø 80 | D=80 mm | 50.265 cm² | 39.458 kg/m | 201.06 cm⁴ | 201.06 cm⁴ | 50.265 cm³ | 50.265 cm³ |
| Ø 100 | D=100 mm | 78.54 cm² | 61.654 kg/m | 490.87 cm⁴ | 490.87 cm⁴ | 98.175 cm³ | 98.175 cm³ |
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Area is used for linear mass, section modulus for bending, and radius of gyration for buckling.