🟦 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 WelSteels

• 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