Mass28.23kg/m
A3,596mm²
Ix11.70210⁶ mm⁴
Zx139.110³ mm³
Dimensions
| Parameter | Symbol | Value | Unit | Data |
|---|---|---|---|---|
| Outside diameter | D | 168.3 | mm | U |
| Thickness | t | 7.1 | mm | U |
Section Properties
| Parameter | Symbol | Value | Unit | Data |
|---|---|---|---|---|
| General | ||||
| Mass per metre | mass | 28.23 | kg/m | C |
| Gross area | A | 3,596 | mm² | C |
| About x-axis (major) | ||||
| Second moment of area Ix | Ix | 11.702 | 10⁶ mm⁴ | C |
| Elastic section modulus Zx (min) | Zx | 139.1 | 10³ mm³ | C |
| Plastic section modulus Sx | Sx | 184.6 | 10³ mm³ | C |
| Radius of gyration rx | rx | 57.0 | mm | C |
| About y-axis (minor) | ||||
| Second moment of area Iy | Iy | 11.702 | 10⁶ mm⁴ | C |
| Elastic section modulus Zy (min) | Zy | 139.1 | 10³ mm³ | C |
| Plastic section modulus Sy | Sy | 184.6 | 10³ mm³ | C |
| Radius of gyration ry | ry | 57.0 | mm | C |
| Torsion & warping | ||||
| Torsion constant JExact (2I) | J | 23.404 | 10⁶ mm⁴ | C |
| Surface area | ||||
| External surface area | extArea | 0.529 | m²/m | C |
| Internal surface area | intArea | 0.484 | m²/m | C |
Steel Grades
| Grade | Standard | fy MPa | fu MPa | Note | Data |
|---|---|---|---|---|---|
| C350L0 | AS/NZS 1163:2016 | 350 | 430 | Typical grade for larger CHS – confirm with supplier | U |
| C250L0 | AS/NZS 1163:2016 | 250 | 320 | Typical grade for smaller CHS – confirm with supplier | U |
Strengths shown for governing thickness t = 7.1 mm. Density 7850 kg/m³, E = 200 000 MPa.
Source & Verification
- Source publisher
- Pending verification – nominal dimensions entered by the application developer
- Source document
- AS/NZS 1163:2016 Cold-formed structural steel hollow sections
- Edition
- 2016
- Publication year
- 2016
- Page reference
- —
- Last updated
- 2026-10-12
- Verification status
- Unverified
Typical grade: C350L0. Nominal dimensions require verification against AS/NZS 1163 and the manufacturer catalogue.