Toss Weldtronics

Flux-cored MIG welding wire is a tubular welding consumable with a flux compound packed inside a metal sheath. The flux inside the core melts during welding and generates a protective gas and slag that shield the molten weld pool from oxygen and other atmospheric contaminants — much like external shielding gas does in conventional MIG welding. 

Flux Cored Welding Wire E71T-1

E71T-1 Flux Cored Welding Wire is a gas-shielded, flux-cored electrode designed for high-quality welding of mild and low-alloy steels. It is used in the FCAW (Flux Cored Arc Welding) process with an external shielding gas, typically CO₂ or Argon-CO₂ mixtures. The wire provides excellent arc stability, high deposition rates, and strong welds with good mechanical properties.

Key Features

• Type: Gas-shielded flux cored wire

• Polarity: DCEP (DC Electrode Positive)

• Shielding Gas: CO₂ or Ar/CO₂ mixed gas

• Arc Characteristics: Smooth, stable arc with low spatter

• Slag System: Easy-to-remove slag with good bead shape

Benefits

• High deposition efficiency for faster welding

• Excellent penetration and weld strength

• Good impact toughness even at low temperatures

• Suitable for all welding positions (flat, horizontal, vertical, overhead)

• Consistent weld quality in industrial environments

Common Applications

• Structural steel fabrication

• Bridges and buildings

• Shipbuilding and offshore structures

• Heavy machinery and equipment

• Pressure vessels and industrial fabrication

Typical Standards & Classification

• AWS: E71T-1

• ISO: T 42 2 P C 1 H5 (varies by manufacturer)

• Tensile Strength: Approx. 70,000 psi (490 MPa)

Flux Cored Arc Welding (FCAW) Wire

Flux Cored Arc Welding Wire is a tubular welding consumable filled with flux, used in the FCAW (Flux Cored Arc Welding) process. During welding, the flux inside the wire melts to produce shielding gases and slag, protecting the molten weld pool from atmospheric contamination and ensuring strong, high-quality welds.

FCAW wires may be self-shielded (gasless) or gas-shielded, depending on the application and wire classification.

Types of FCAW Wire

1. Self-Shielded Flux Cored Wire

   • Does not require external shielding gas

   • Ideal for outdoor and site welding

   • Example: E71T-11

2. Gas-Shielded Flux Cored Wire

   • Requires external shielding gas (CO₂ or Ar/CO₂ mix)

   • Offers better weld quality and mechanical properties

   • Example: E71T-1

Key Features

• Form: Tubular wire with flux core

• Polarity: Usually DCEP (varies by wire type)

• Arc Characteristics: Stable arc with high deposition rate

• Slag System: Provides good bead shape and easy slag removal

Benefits

• High welding speed and productivity

• Excellent penetration and weld strength

• Good performance in all welding positions

• Better tolerance to mill scale and rust compared to solid wires

• Suitable for heavy-duty and structural applications

Flux-cored MIG welding wire is a tubular welding consumable with a flux compound packed inside a metal sheath. The flux inside the core melts during welding and generates a protective gas and slag that shield the molten weld pool from oxygen and other atmospheric contaminants — much like external shielding gas does in conventional MIG welding.