AS/NZS 3679.1 Channel Steel | Australian Standard C‑Channel / Tapered Flange Channel
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Description
🟦 Product Overview
AS/NZS 3679.1 Channel Steel is the Australian and New Zealand standard for hot‑rolled structural steel sections. It includes C‑Channel and Tapered Flange Channel profiles widely used in Australia, New Zealand, and global EPC projects requiring Australian‑standard structural steel.
Australian channels are known for:
- High structural strength
- Excellent weldability
- Reliable performance in heavy‑duty applications
- Strict dimensional and mechanical requirements
Common material grades include Grade 300 and Grade 350, which provide strong performance for building structures, industrial frameworks, and machinery support systems.
🟦 Applicable Standards
- AS/NZS 3679.1 – Structural steel – Hot‑rolled bars and sections
- AS/NZS 3678 – Structural steel – Hot‑rolled plates
- AS/NZS 1163 – Structural steel hollow sections (related applications)
🟦 Available Grades
- Grade 300
- Grade 350
These grades provide high strength and excellent weldability for structural applications.
🟦 Section Types
C‑Channel (Australian Standard Channel)
- Tapered flange design
- Suitable for building structures and general fabrication
- Designation example: C200 × 75 × 23
Tapered Flange Channel
- Traditional Australian channel geometry
- High load‑bearing capacity
- Used in industrial and heavy‑duty structures
🟦 Dimensions Range
| Parameter | Range |
|---|---|
| Height (H) | 75–380 mm |
| Flange Width (B) | 40–100 mm |
| Web Thickness (t1) | 4–13 mm |
| Flange Thickness (t2) | 7–20 mm |
| Length | 6 m / 9 m / 12 m / custom |
| Tolerance | As per AS/NZS 3679.1 |
Australian Standard Channel Steel (PFC) – AS/NZS 3679.1:2010
| Designation | Unit Weight (kg/m) | W (mm) | H (mm) | B (mm) | t₁ (mm) | t₂ (mm) |
|---|---|---|---|---|---|---|
| 75 × 40 | 5.90 | 75 | 75 | 40 | 3.8 | 6.1 |
| 100 × 50 | 8.31 | 100 | 100 | 50 | 4.2 | 6.7 |
| 125 × 65 | 11.9 | 125 | 125 | 65 | 4.7 | 7.5 |
| 150 × 75 | 17.7 | 150 | 150 | 75 | 6.0 | 9.5 |
| 200 × 75 | 22.9 | 200 | 200 | 75 | 6.0 | 12.0 |
| 230 × 75 | 25.1 | 230 | 230 | 75 | 6.5 | 12.0 |
| 250 × 90 | 35.5 | 250 | 250 | 90 | 8.0 | 15.0 |
| 300 × 90 | 40.1 | 300 | 300 | 90 | 8.0 | 16.0 |
| 380 × 100 | 55.2 | 380 | 380 | 100 | 10.0 | 17.5 |
🟦 Mechanical Properties
Grade 300
| Property | Value |
|---|---|
| Yield Strength | ≥ 300 MPa |
| Tensile Strength | 440–560 MPa |
| Elongation | ≥ 20% |
Grade 350
| Property | Value |
|---|---|
| Yield Strength | ≥ 350 MPa |
| Tensile Strength | 480–620 MPa |
| Elongation | ≥ 20% |
🟦 Chemical Composition (Typical)
Grade 350
| Element | Max (%) |
|---|---|
| C | 0.20 |
| Mn | 1.60 |
| P | 0.040 |
| S | 0.040 |
| Si | 0.55 |
🟦 Applications
- Building and construction
- Mining and industrial frameworks
- Machinery and equipment support
- Infrastructure and civil engineering
- Structural reinforcement
- Welded assemblies
🟦 Why Use AS/NZS 3679.1 Channel Steel
- Standardized Australian dimensions
- High structural strength
- Excellent weldability and fabrication properties
- Suitable for heavy‑duty industrial applications
- Widely used in Australia, New Zealand, and global EPC projects
🟦 Why Choose Jaron Steel
- Full range of AS/NZS 3679.1 channel steel
- Grade 300 / Grade 350 available
- CNC cutting, drilling, and fabrication services
- SGS / BV third‑party inspection available
- Export‑grade seaworthy packaging
- Fast delivery from stock and mill production
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