Mass20.88kg/m
A2,660mm²
Ix14.13110⁶ mm⁴
Zx157.010³ mm³
Dimensions
| Parameter | Symbol | Value | Unit | Data |
|---|---|---|---|---|
| Depth | d | 180.0 | mm | U |
| Flange width | bf | 75.0 | mm | U |
| Flange thickness | tf | 11.0 | mm | U |
| Web thickness | tw | 6.0 | mm | U |
| Root radius | r1 | 12.0 | mm | U |
Section Properties
| Parameter | Symbol | Value | Unit | Data |
|---|---|---|---|---|
| General | ||||
| Mass per metre | mass | 20.88 | kg/m | C |
| Gross area | A | 2,660 | mm² | C |
| Centroid x̄ (from left/heel) | xc | 24.5 | mm | C |
| About x-axis (major) | ||||
| Second moment of area Ix | Ix | 14.131 | 10⁶ mm⁴ | C |
| Elastic section modulus Zx (min) | Zx | 157.0 | 10³ mm³ | C |
| Plastic section modulus Sx | Sx | 181.6 | 10³ mm³ | C |
| Radius of gyration rx | rx | 72.9 | mm | C |
| About y-axis (minor) | ||||
| Second moment of area Iy | Iy | 1.509 | 10⁶ mm⁴ | C |
| Elastic section modulus Zy (min) | Zy | 29.9 | 10³ mm³ | C |
| Plastic section modulus Sy | Sy | 53.8 | 10³ mm³ | C |
| Radius of gyration ry | ry | 23.8 | mm | C |
| Torsion & warping | ||||
| Torsion constant JApproximate thin-walled value, fillets neglected | J | 0.078 | 10⁶ mm⁴ | C |
| Surface area | ||||
| External surface area | extArea | 0.638 | m²/m | C |
Nominal designation mass 20.90 kg/m; calculated 20.88 kg/m (-0.1%).
Steel Grades
| Grade | Standard | fy MPa | fu MPa | Note | Data |
|---|---|---|---|---|---|
| 300 | AS/NZS 3679.1:2016 | 320 | 440 | Typical grade supplied – confirm availability with supplier | U |
Strengths shown for governing thickness t = 11.0 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 3679.1:2016 Structural steel – Hot-rolled bars and sections
- Edition
- 2016
- Publication year
- 2016
- Page reference
- —
- Last updated
- 2026-10-12
- Verification status
- Unverified
Nominal dimensions require verification against the current edition of the product standard and the manufacturer catalogue before design use. Properties are calculated by this application from the nominal dimensions.