S307610-085 - Hobart Quantum Arc 6 ER70S-6 Copper-Free MIG Wire .040 45lb Spool

Run Cleaner, Run Longer with Quantum Arc 6

If you are tired of constantly changing out contact tips or blowing out your liner because of copper flake buildup, it is time to switch to Hobart Quantum Arc 6. This isn't your standard MIG wire; it's a copper-free beast designed to keep your machine running smooth and your arc steady. We know that in a busy shop, downtime is the enemy. That's why Hobart ditched the copper coating on this ER70S-6 wire. No copper means no flaking, which means your liner stays clean and your wire feeds consistently, hour after hour. It’s perfect for those long welds where you can't afford a burn-back or a stutter.

This specific spool comes in the .040-inch diameter. It’s a sweet spot for guys who feel .035 is too slow but .045 is too hot for the fit-up. It gives you that extra deposition rate to lay down metal fast while keeping the puddle controllable. Because it's an S-6 wire, it’s got the extra deoxidizers you need when the steel isn't perfectly prepped. Got a little rust? A bit of mill scale? Quantum Arc 6 burns right through it, leaving you with a solid weld and very little spatter to chip off later.

The 45lb fiber spool is built for production. It loads easy and feeds straight. Whether you are welding on heavy equipment, fixing agricultural machinery, or fabricating structural frames, this wire gives you a buttery smooth arc that makes you look good. The bead wets out nicely at the toes, reducing the chance of cold lap. Stop fighting your feed system and start welding with a wire that works as hard as you do.