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EDM568004 - Murex .045 ER70S-6 Mild Steel MIG Wire - 44lb Spool

Packaging: 44lb spool
$4.90/lb $134.64/44lb spool only $3.06/lbSave 38%

In stock

OVERVIEW

Reliable Performance for Tough Welding Jobs

When you are out in the field repairing a bucket on an excavator or in the shop fabricating structural frames, you need a wire that isn't picky about the steel condition. The Murex .045 S6 MIG Wire is the welder's choice for versatility and reliability. Known as the "general purpose" workhorse of the industry, this ER70S-6 wire cuts through the grime, rust, and mill scale that often plagues repair work, laying down smooth, sound welds without the porosity headaches caused by cleaner wires like S3.

The .045-inch diameter is the sweet spot for heavy fabrication. It puts down metal fast enough to keep production moving but is manageable enough for vertical and overhead shots when you dial in your machine. Whether you are running straight CO2 for deep penetration and economy, or a C25 mix for a smoother arc and less spatter, this wire runs stable and consistent. The 44lb spool is designed to fit standard industrial wire feeders, meaning fewer spool changes and more arc-on time during long shifts.

Welders appreciate the smooth feedability of this Murex wire. The quality copper coating reduces drag in your gun liner and improves contact at the tip, ensuring a stable arc even when you are twisted into a difficult position. From automotive frames to farm implements and mining machinery, this wire delivers the strength and bead appearance professional welders demand. It handles high currents well for spray transfer modes on thick plate, yet remains controllable in short-circuit for thinner gauges or gap bridging.

Additional Information
AWS Spec:ER70S-6
Diameter:0.045"
Grade:S6 Copper Coated
Packaging:44 lb Spool
Weld Process:MIG (GMAW)
Polarity:DCEP
Material Composition:Mild Steel
Wire Diameter:0.045"
Wire Type:Solid
Shielding Gas Requirement:100% CO2, 75% Argon / 25% CO2
Spool Size:44 lb
AWS Classification:ER70S-6
Applications:General Fabrication, Automotive, Heavy Equipment, Structural Steel
Wire Finish:Copper-coated
Welding Position:All Position
Packaging Description:44lb spool
Brand:Lincoln Electric

INCLUDED

  • 1 x 44lb Spool of .045" ER70S-6 MIG Wire

APPLICATIONS

  • Automotive repair and chassis fabrication
  • Heavy equipment manufacturing (mining, farming, construction)
  • Structural steel fabrication
  • General industrial maintenance and repair
  • Welding on metals with medium-to-high mill scale
  • Sheet metal applications requiring single-pass welds

FAQ

This ER70S-6 wire works well with 100% CO2 for deep penetration and lower cost, or a 75% Argon / 25% CO2 mix (C25) for a smoother arc, less spatter, and better bead appearance.

Yes, the 'S6' classification indicates higher levels of silicon and manganese deoxidizers, making it specifically designed to handle moderate rust, mill scale, and surface contaminants better than S3 or S2 wires.

This is a 44lb (approx. 20kg) spool. It typically requires an industrial-sized wire feeder or a machine capable of holding 12-inch diameter spools.

This solid wire requires Direct Current Electrode Positive (DCEP), also known as Reverse Polarity.

Yes, .045 wire can be used for all-position welding (vertical, overhead) typically using the short-circuit transfer mode, though it is often used in the flat and horizontal positions for spray transfer on thicker materials.

ER70S-6 has higher silicon and manganese content than ER70S-3. This provides better deoxidizing capabilities for dirty steel and generally results in a flatter bead with smoother tie-in.

No, this is a solid MIG wire and requires an external shielding gas cylinder to protect the weld pool.