Cheap ER70S-6 used to mean a gamble. The wire might feed fine for half a spool, then start skipping in the liner, or the copper coating would flake and clog your contact tip by the second hour. Nobody enjoys discovering that midway through a job.
This ATLASWELDER ER70S-6 review covers the .035 inch, 10 pound spool from a Maryland brand that showed up on Amazon in early 2025 and undercut nearly everyone on price. Local brand, real support, and products they stand behind is the pitch, and so far buyers seem to agree.
At $28.99 for 10 pounds, this is the cheapest wire per pound in our best MIG welding wire comparison, and by a wide margin. A price that low asks a fair question: can budget solid wire hang with the established brands? I spent several weeks running this spool through sheet, plate, and everything in between, and the listing sat at #13 in Amazon’s Welding Wire category at the time of writing.
In this ATLASWELDER ER70S-6 review, I will cover gas setup and feeding, bead quality and spatter, price per pound against the name brands, and who this spool actually suits.
ATLASWELDER ER70S-6 Package Content & Technical Specifications
The spool arrives vacuum-sealed, which at this price point is a surprise. Budget wire usually ships in a thin plastic wrap that is more suggestion than seal. The bag matters more than it looks: copper-coated solid wire picks up moisture, and damp wire runs porosity no matter how good the chemistry is. Open it, load the spool, weld. The package includes:
Budget Solid MIG Wire For Mild Steel
- 10 lb spool of ATLASWELDER ER70S-6 .035″ (0.9 mm) copper-coated solid MIG wire
- Vacuum-sealed moisture barrier bag
Technical Specifications
| Brand: | ATLAS WELDER (Maryland, USA local brand) |
| Classification: | ER70S-6 solid wire (AWS A5.18) |
| Wire diameter: | .035″ (0.9 mm) |
| Spool weight: | 10 lb |
| Spool size: | 8 in |
| Shielding gas: | 75/25 Ar/CO₂ or 100% CO₂ |
| Polarity: | DCEP (electrode positive) |
| Base metal: | Mild steel |
| Tensile strength: | 70,000 psi |
| Welding positions: | All position |
| Package: | 8.27 x 8.03 x 2.4 in (10.74 lb shipped) |
| Line variants: | .035″ and .030″, 10 lb spools |
| Amazon rating: | 4.5/5 (128 ratings) |
| ASIN: | B0F22QMBT7 |
Pros
- $2.90 per pound, the cheapest ER70S-6 in our comparison by a wide margin
- Vacuum-sealed packaging, rare at this price point
- Evenly wound, feeds smoothly with no bird-nesting in testing
- Stable arc and flat, well-wetted beads on 75/25 argon/CO₂
- Full deoxidizer load handles light surface rust without porosity
Cons
- Feed consistency drops slightly during long continuous sessions
- Copper coating thinner than Hobart or Lincoln premium wire
- Needs shielding gas, no gasless option in this line
- Young brand with only 128 ratings so far
- Not the wire for structural or code work
How the ATLASWELDER ER70S-6 .035 Wire Performs
This is solid wire, so it needs shielding gas. A 75/25 argon/CO₂ mix is the standard pairing and what I ran, though the wire also runs on straight CO₂ with a little more spatter. DCEP polarity, the same as every other solid MIG wire, so no lead swapping if you are coming from another solid spool. If flux core is your usual game, that is the changeover that catches people: swap the leads, swap the tip, swap the drive rolls. Miller’s welding guides cover the full solid-wire setup if you want a second reference.
On paper this is ordinary ER70S-6 done to spec: copper-coated solid wire, 70,000 psi tensile class, all-position, mild steel. Every claim worth checking is in the running, not the datasheet. How it feeds, how the bead looks, what happens an hour into a session, and whether the per-pound savings survive contact with real work.
Setup, Feeding, and First Impressions
The wire loads and starts feeding without drama. It is evenly wound, and even winding matters more than most people credit: a cross-wound or sloppy wrap feeds in surges, and surging wire means inconsistent arc length and a bead that wanders. ATLASWELDER lists smooth feeding and bird-nest prevention as selling points, and the spool I have does not argue with the claim.
The 8 inch spool fits the standard hub on every full-size hobby and farm machine I loaded it on, the Handler 140 class and up. One tip that gets skipped too often: run a .035 contact tip, not the .030 left over from your last thin-metal job. An undersized tip drags on the wire and mimics exactly the feed problems people blame the wire for.
Bead Quality, Spatter, and Consistency
On 75/25 at .035 settings, the arc is quiet and stable across the normal range. Beads lay down flat with decent wetting, no undercut on butt joints in 11 gauge sheet. The deoxidizer load is what separates the 6 in ER70S-6 from cheaper ER70S-2 and ER70S-3: more silicon and manganese, which scavenge oxygen out of the puddle on metal that is not perfectly clean. On scaly stock I still prep first, but light surface rust did not hurt the bead. If you are still dialing in voltage and wire speed, our how to MIG weld guide covers the basics.
The honest limits. Spatter is present but light, comparable to mid-tier wire, and it chips off without welding itself to the plate.
Where the budget shows is consistency over a long session: after about an hour of near-continuous welding, the feed became slightly less consistent and wanted an occasional tweak of drive tension. Not a dealbreaker, just the visible difference between this copper coating and the thick, even coating Hobart puts on its wire. Out of position the wire behaves like any ER70S-6: vertical up wants a slight reduction in wire speed, and overhead runs clean at the low end of the voltage range.
Price Per Pound and Who This Spool Is For
The market context explains who this wire is for. At $28.99 for 10 pounds, the math comes to $2.90 per pound. The YesWelder ER70S-6 in our comparison runs $42 for the same weight, $4.20 per pound. Blue Demon’s 11 pound .030 spool works out to $3.73 per pound. Against the established names, this ATLASWELDER spool runs 30 to 45 percent cheaper per pound, for the same AWS classification and the same 70,000 psi tensile rating.
That price buys forgiveness for a specific kind of buyer: the hobbyist or small shop that burns wire in volume and cannot justify premium prices on practice metal, jigs, fixtures, and the hundred non-critical welds a week that keep a home shop running. For structural, pressure, or code work, reach for the Hobart or Lincoln.
On diameter choice, .035 is the right default for the 18 gauge to 1/4 inch work most home shops see, and it feeds more reliably than .030 on longer liner runs. One storage note: keep what the bag gave you. Reseal the spool or store it in a dry box, because solid wire left uncovered in a damp garage will feed badly regardless of who made it.
Frequently Asked Questions [F.A.Q]
Is ATLASWELDER ER70S-6 good wire?
For the price, yes. It feeds smoothly, runs a stable arc on 75/25 argon/CO₂, and the vacuum-sealed packaging keeps the copper coating protected until you are ready to weld. It is a budget-class wire, so consistency over very long welding sessions trails the premium brands, but for hobby and general fabrication work it is a sound choice at $2.90 per pound.
What shielding gas does it need?
Standard solid-wire gas: 75/25 argon/CO₂ is the pairing most welders use with it. 100% CO₂ also works and penetrates slightly harder on thicker stock, at the cost of more spatter and a flatter bead. There is no flux core in this wire, so no bottle means no weld.
Can I weld stainless or aluminum with it?
No. ER70S-6 is a mild steel filler. Stainless needs ER308L, aluminum needs ER4043 or ER5356, each with its own gas and machine setup. Running mild steel wire on stainless gives you a weld that rusts.
How does it compare to Hobart or Lincoln ER70S-6?
Same AWS classification, different quality tier. Hobart and Lincoln carry thicker, more even copper coatings and batch-level consistency that matters on multi-hour production runs. ATLASWELDER counters with price: 30 to 45 percent cheaper per pound. If your welds carry a code book, buy the premium names. If they don’t, the budget spool keeps the difference in your pocket.
Conclusion
The ATLASWELDER ER70S-6 .035 spool is the budget pick in our MIG wire comparison for a reason. It runs a stable arc, feeds fine, arrives sealed, and costs $2.90 per pound while the name brands ask $3.73 to $4.20. For hobby shops, practice metal, and non-critical fabrication, that trade is easy to make. See where it lands against YesWelder, Hobart, and the rest in our welding wire guide.
