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87314 - Bohler Eco-Spark 420 ER70S-6 .045 Copper-Free MIG Wire 20kg

Packaging: 20 kg spool
$7.10/kg $77.60/20 kg spool only $3.88/kgSave 45%

In stock

OVERVIEW

Experience Cleaner Welds with Bohler Eco-Spark 420

Upgrade your welding setup with the Bohler Eco-Spark 420 MIG Wire, a top-tier .045" (1.2mm) solid wire that leaves the copper coating behind. If you are tired of dealing with bird-nesting, erratic feeding, or constantly changing contact tips due to copper buildup, this is the solution. The Eco-Spark 420 uses advanced surface technology to provide a bare, copper-free wire that feeds smoothly and strikes consistently, giving you a buttery-smooth arc every time you pull the trigger.

This 20kg (44lb) spool is perfect for welders who want to keep the arc on longer without frequent spool changes. The ER70S-6 classification ensures it handles surface contaminants like rust and mill scale well, thanks to its high manganese and silicon content. Whether you are working on automotive repairs, general steel fabrication, or heavy structural projects, this wire delivers deep penetration and excellent wetting characteristics.

Why Choose Copper-Free?

  • Better Feeding: The wire glides through the liner with less friction and drag.
  • Cleaner Air: Eliminates copper fumes, contributing to a safer workspace.
  • Less Spatter: Engineered for a stable metal transfer that keeps your workpiece clean.
  • Stronger Welds: High-quality metallurgy ensures robust, crack-resistant joints.

Compatible with standard MIG welders capable of running .045" wire, the Eco-Spark 420 is the modern standard for professional welders who demand reliability and performance. Make the switch to copper-free and experience the difference in your daily welding operations.

Additional Information
Brand:Bohler
Diameter:0.045"
Grade:S6 Copper Free
AWS Spec:ER70S-6
Packaging:20 kg Spool
Packaging Description:20kg spool
Weld Process:MIG (GMAW)
Polarity:DCEP
Wire Finish:Copper-free, Bare
Wire Type:Solid
Spool Size:20 kg
Shielding Gas Requirement:CO2, Argon/CO2 Mix
Applications:Automotive, General Fabrication, Robotic Welding, Structural Steel

INCLUDED

  • 1 x 20kg Spool of Bohler Eco-Spark 420 MIG Wire (.045")

APPLICATIONS

  • Automotive and transportation industry
  • Robotic and automated welding cells
  • General structural steel fabrication
  • Heavy machinery manufacturing
  • Boiler and vessel construction
  • High-speed welding applications

FAQ

The main advantage is the absence of copper coating, which prevents copper flaking. This reduces clogging in liners and contact tips, leading to better feedability and less maintenance downtime.

No, it can be used with standard shielding gases such as 100% CO2 or Argon/CO2 mixtures (e.g., C1 or M21) depending on the application.

Yes, Eco-Spark 420 is highly recommended for robotic welding due to its superior feedability, consistent arc starting, and lack of copper debris buildup.

This is a 20kg spool, which is approximately 44 lbs. It is slightly larger than the standard 15kg or 33lb spools.

The wire undergoes a special surface treatment that provides corrosion resistance similar to or better than copper-coated wires, provided it is stored correctly.

Yes, as an ER70S-6 class wire, it is excellent for structural steel, offering good deoxidizing properties for welding over mild mill scale.

This wire is 0.045 inches (approx. 1.2mm) in diameter.

Yes, because there is no copper coating, it eliminates copper fumes and generally produces lower overall fume emission rates compared to standard wires.