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71028B - Hobart Megafil 710M 0.052 Metal-Cored Wire 660lb Drum

Packaging: 660lb drum
$9.50/lb $3,920.40/660lb drum only $5.94/lbSave 37%

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OVERVIEW

Smooth Running, Low Spatter, High Speed

If you are looking for a wire that runs like butter and lays down metal fast, the Hobart Megafil 710M is the answer. This .052-inch metal-cored wire is a favorite among welders for its incredibly smooth arc and ease of use. Unlike solid wire, which can sometimes feel stiff or prone to lack of fusion if you aren't careful, the Megafil 710M wets out beautifully at the toes of the weld. This means you get a flat, professional-looking bead profile with almost zero effort, even when moving at high travel speeds.

One of the biggest headaches in welding is cleanup. With flux-cored wires, you are constantly chipping slag. With some solid wires, you are scraping off spatter. The Megafil 710M changes the game by producing virtually no slag and minimal spatter. You can often weld right over your previous pass without stopping to clean, which keeps you under the hood and burning wire. The "metal core" design combines the best of both worlds: the cleanliness of solid wire with the high deposition and forgiveness of flux-cored wire. It handles mill scale and dirty steel much better than standard ER70S-6 solid wire, so you spend less time grinding prep and more time welding.

This specific package comes in a massive 660 lb drum. While that might seem like a lot, for a busy shop, it's a lifesaver. It means you aren't stopping every few hours to swap out a small spool and re-thread your machine. Once this drum is set up, you are good to go for a long time. It is perfect for long, continuous welds on heavy structural beams, excavator buckets, or truck frames. The wire feeds consistently, reducing burn-backs and bird-nesting issues that can ruin your rhythm.

To get the best results, you will want to run this with a high-argon mix (like 75/25 or 90/10). The arc is stable and quiet, reducing operator fatigue over long shifts. Whether you are welding flat or horizontal fillets, the Megafil 710M gives you the control and speed you need to get the job done right and get it done fast.

Additional Information
Brand:Hobart
Diameter:0.052 in
Packaging Description:660lb drum
Weld Process:Metal-Cored (MCAW)
AWS Spec:E70C-6M
Polarity:DCEP
Position:Flat/Horizontal
Material Composition:Mild Steel
Wire Type:Metal-Cored
Shielding Gas Requirement:75-95% Argon / Balance CO2
Spool Size:660 lb Drum
AWS Classification:E70C-6M H4
Applications:Robotic Welding, Heavy Fabrication, Structural Steel, Railcar Construction
Wire Finish:Copper-Coated
Mechanical Properties:Tensile Strength: 70-80 ksi, Charpy V-Notch Impact Toughness

INCLUDED

  • 1 x 660 lb Drum of Hobart Megafil 710M .052" Metal-Cored Wire

APPLICATIONS

  • Robotic and hard automation welding cells
  • Heavy equipment manufacturing (earthmovers, cranes)
  • Structural steel fabrication
  • Railcar and barge construction
  • Automotive chassis and frames
  • General fabrication of mild steel

FAQ

This wire is designed for use with Argon/CO2 mixtures, typically ranging from 75% Argon / 25% CO2 to 95% Argon / 5% CO2. It is not recommended for use with 100% CO2.

The Hobart Megafil 710M is classified as E70C-6M H4 per AWS A5.18 standards.

No, as a metal-cored wire, it produces little to no slag, often appearing only as small islands of silicon that are easily removed. This distinguishes it from flux-cored wires.

You will need a drum hood or cone and a conduit system to guide the wire from the drum to the wire feeder. This setup prevents tangling and ensures low-friction feeding.

The E70C-6M classification is primarily for flat and horizontal positions. Out-of-position welding (vertical up/overhead) is generally difficult with standard CV modes due to the fluid puddle, though pulsed MIG waveforms can sometimes enable it.

The .052" diameter offers higher deposition rates than .045" wire while maintaining better puddle control and lower heat input than 1/16" wire, making it a versatile middle ground for heavy fabrication.

It should be stored in a dry, low-humidity environment. Although it is a tubular wire, proper storage is critical to prevent moisture pickup which can lead to porosity or hydrogen cracking.

Yes, metal-cored wires like the Megafil 710M have deoxidizers that allow them to handle light-to-moderate mill scale and rust better than solid wires.
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