Description

Cigweld Autocraft LW1 MIG Wire 15kg

The Cigweld Autocraft LW1 MIG Wire is a high-quality copper coated ER70S-4 mild steel MIG welding wire designed for reliable Gas Metal Arc Welding (GMAW) of mild, low alloy and medium strength steels. Manufactured using advanced wire drawing technology, Autocraft LW1 delivers superior copper coating quality for improved wire feeding, enhanced electrical conductivity and reduced contact tip wear.

Classified to:

• AWS/ASME-SFA A5.18: ER70S-4
• AS/NZS 14341: B G 49A 3U C1/M21/M24 S4

This versatile wire is suitable for short-arc, spray and pulsed arc transfer modes, making it ideal for workshop fabrication and structural welding.

Advanced Copper Coating Technology

Autocraft LW1’s premium copper coating provides:

• Improved wire feeding consistency
• Increased resistance to copper flaking under high current conditions
• Enhanced electrical conductivity
• Reduced contact tip wear

This results in smoother arc performance and greater reliability in high production environments.

Mechanical Performance

Typical all-weld metal mechanical properties include:

Using Argon + 10–15% CO₂:

• Yield Strength: 450 MPa
• Tensile Strength: 550 MPa
• CVN Impact: 120 J @ -20°C

Using Welding Grade CO₂:

• Yield Strength: 410 MPa
• Tensile Strength: 525 MPa
• CVN Impact: 110 J @ -20°C

Diffusible hydrogen levels are typically 1.0–2.0 ml/100g of deposited weld metal, supporting reduced risk of hydrogen-induced cracking.

Ideal Applications

Autocraft LW1 is suitable for:

• General fabrication
• Structural steelwork
• Pressure vessels
• Mild and low alloy steels
• Sheet, pipe and tubular sections

It produces smooth, low spatter welds with a mitre to slightly concave fillet profile and even contour.

Available Sizes – 15kg Spools

• 0.9mm – Part No. 720115
• 1.2mm – Part No. 720116

For fabricators seeking a premium ER70S-4 copper coated MIG wire with excellent feeding characteristics and consistent mechanical performance, the Cigweld Autocraft LW1 15kg spool delivers dependable results across a wide range of mild steel applications.