GTW ER70S-6 by Washington Alloy | 0.035" x 44lb | TC 70S-6 104

ER70S-6 MIG Welding Wire – Engineered Strength for Real-World Conditions

When the job demands excellence and there’s no room for error, professional welders reach for ER70S-6. This high-performance MIG wire is specifically engineered with elevated levels of manganese and silicon, delivering unmatched deoxidizing power even when working on rusty, oily, or poorly cleaned steel. If you're working in real-world conditions—not laboratory-perfect environments—this is the wire you can trust to deliver top-tier results, every time.

Precision-Built for Demanding Welders

ER70S-6 isn’t just another mild steel wire. It’s your advantage in the field when cleanliness and fit-up are less than ideal. Designed to produce X-ray quality, porosity-free welds, it offers the highest tensile strength in its class and superior bead fluidity. That means stronger welds, cleaner finishes, and less time grinding. The result? Fewer do-overs, faster throughput, and a final product that exceeds expectations.

Why Professionals Choose ER70S-6 From Us

• Deoxidizer-Rich Chemistry: High silicon and manganese levels combat mill scale, rust, and oil—ideal for structural, automotive, and heavy fabrication.

• Smoother Bead Appearance: Increased fluidity creates a flatter, more consistent bead that requires less post-weld cleanup.

• Industry-Leading Mechanical Performance:

  • Tensile Strength: 80,380 psi (vs. 70,000 psi minimum spec)

  • Yield Strength: 66,587 psi

  • Elongation: 25% in 2"

  • Charpy Impact Toughness: 28 ft-lbs at 0°F

  • Brinell Hardness: 160

Applications That Demand ER70S-6
Whether you’re fabricating in the field or repairing in the shop, ER70S-6 delivers the consistency and performance you can rely on:

• Heavy Equipment & Farm Implements

• Construction Steel & Tanks

• Pipe Welding & Structural Steel

• Truck Frames, Trailers & Bodies

• Forgings, Shaft Build-Ups & Cast Repairs

• General Fabrication Projects with Challenging Fit-Ups

This Is the Wire Welders Trust—and You Should Too

You can buy ER70S-6 anywhere, but when you buy it from us, you're not just buying filler metal—you’re securing your weld quality, your reputation, and your productivity. We supply only top-grade wire that meets or exceeds AWS specifications, backed by fast shipping, expert support, and a deep understanding of real-world welding challenges.

Get the ER70S-6 MIG Wire Trusted by Industry Pros

Don’t let subpar wire compromise your work. Invest in ER70S-6 today and weld with confidence—no matter the condition of your steel, your fit-up, or your environment. It's in stock, competitively priced, and ready to perform. Order now and see why the best welders in the industry won’t use anything else.