21×2.0 CHS
Circular hollow sections from Australian-Sections.xlsx (Sheets 1-19).
Outline drawn from the published dimensions. Fillets and root radii are not shown.
Dimensions
| Property | Metric | Imperial |
|---|---|---|
| Thickness, t | 2 mm | 0.07874 in |
| Outside diameter | 21.3 mm | 0.838583 in |
| Inside diameter | 17.3 mm | 0.681102 in |
Bending about the major axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, Iₓ | 5,710 mm⁴ | 0.013718 in⁴ |
| Elastic modulus, Sₓ | 536.1502 mm³ | 0.032718 in³ |
| Plastic modulus, Zₓ | 748 mm³ | 0.045646 in³ |
| Radius of gyration, rₓ | 6.8695 mm | 0.270453 in |
| Distance to top fibre | 10.65 mm | 0.4192915 in |
| Distance to bottom fibre | 10.65 mm | 0.4192915 in |
Bending about the minor axis
| Property | Metric | Imperial |
|---|---|---|
| Second moment of area, I_y | 5,710 mm⁴ | 0.013718 in⁴ |
| Elastic modulus, S_y | 536.1502 mm³ | 0.032718 in³ |
| Plastic modulus, Z_y | 748 mm³ | 0.045646 in³ |
| Radius of gyration, r_y | 6.8695 mm | 0.270453 in |
Torsion and warping
| Property | Metric | Imperial |
|---|---|---|
| Torsion constant, J | 11,400 mm⁴ | 0.027389 in⁴ |
Mass
| Property | Metric | Imperial |
|---|---|---|
| Mass per metre | 0.94985 kg/m | 0.63827 lb/ft |