125PFC AS/NZS 3679.1 Grade 300 — Australian Parallel Flange Channel Section Properties
125PFC is an Australian PFC (Parallel Flange Channel) per AS/NZS 3679.1 hot-rolled structural steel section. Standard Australian PFC dimensions. Verify against Liberty OneSteel / InfraBuild section catalog.
Dimensions (Metric)
| Property | Value | Unit |
|---|---|---|
| Depth (d) | 125 | mm |
| Flange Width (bf) | 60 | mm |
| Flange Thickness (tf) | 7.5 | mm |
| Web Thickness (tw) | 4.5 | mm |
| Cross-Sectional Area (A) | 13.9 | cm² |
| Mass | 14.0 | kg/m |
Elastic Section Properties (Metric)
| Property | Strong Axis (X-X) | Weak Axis (Y-Y) | Unit |
|---|---|---|---|
| Moment of Inertia (I) | 361 | 27 | cm⁴ |
| Elastic Section Modulus (S) | 58 | 9 | cm³ |
| Plastic Section Modulus (Z) | 66 | 14 | cm³ |
| Radius of Gyration (r) | 5.09 | 1.39 | cm |
Torsional Properties
| Property | Value | Unit |
|---|---|---|
| Torsional Constant (J) | 2 | cm⁴ |
| Distance Between Flange Centroids (ho) | 11.75 | cm |
Design Resources
- Australian Steel Design Guide — AS 4100 overview
- Australian Steel Beam Sizes — Full UB/UC dimension table
- AS/NZS 3679.1 Steel Grades — Grade 300, 350, 400 properties
- Beam Capacity Calculator — Check 125PFC for your loads
- Column Capacity Calculator — Check 125PFC as a column
- Section Properties Database — Compare with other sections
Frequently Asked Questions
What is the 125PFC section depth? The 125PFC has a nominal depth of 125mm and a flange width of 60mm. The PFC is part of the 125mm depth series.
What steel grade is standard for 125PFC? Typically AS/NZS 3679.1 Grade 300 per AS/NZS 3679.1. Also available as Grade 300PLUS, Grade 350, Grade 400. Verify grade requirements with project specifications.
What is the mass of a 125PFC beam? 14.0 kg/m. A 12m length weighs approximately 168 kg.
What is the section modulus of 125PFC? Sx = 58 cm³ (strong axis) and Sy = 9 cm³ (weak axis). The plastic section modulus Zx = 66 cm³.
Related Pages
- Australian Steel Beam Sizes Reference
- AS 4100 Steel Design Guide
- Australian Steel Grades
- Beam Capacity Calculator
- Column Capacity Calculator
Educational reference only. Verify all section properties against the current Liberty OneSteel / InfraBuild section catalog and AS/NZS 3679.1 before design. Results are PRELIMINARY — NOT FOR CONSTRUCTION.