THQ-50CG4 (SG3)

THQ-50CG4 (SG3) is a high-tensile carbon steel MIG welding wire designed for use with CO₂ or Ar/CO₂ shielding gas. Featuring elevated manganese and silicon levels, it delivers superior arc stability and high strength for heavy structural steel fabrication.

Features

• Higher Manganese and Silicon levels (G4Si1) for superior tensile strength
• Enhanced deoxidizing capability for excellent performance on dirty or mill-scale steel
• Smooth, highly stable arc with minimal spatter and easy cleanup
• Excellent wire feedability and consistent arc initiation
• Compatible with CO₂ and Ar/CO₂ shielding gas mixtures
  

Typical Applications

• Heavy structural steel fabrication and bridge construction
• Pressure vessel, boiler, and container manufacturing
• Automotive chassis, shipbuilding, and heavy machinery
• High-strength carbon steel and low-alloy steel joining
• General engineering and high-load mechanical components
  

Welding Positions

• PA / PB / PC / PD / PE / PF / PG
  

WARNING

• Rust, oil, moisture, and other contaminants must be removed from the weld zone before welding.
• The mechanical properties of all-weld metal are determined by heat input; lower heat input is generally preferred to higher heat input.