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ER70S-6 Solid MIG Welding Wire – 0.035 in (0.9 mm), 33 lb Spool | Mild Steel

ER70S-6 Solid MIG Welding Wire – 0.035 in (0.9 mm), 33 lb Spool | Mild Steel

Solid MIG Welding Wire for Mild Steel

Engineered for clean, strong welds, even on imperfect surfaces.

Key Benefits

→ Low-porosity welds – smooth, neat beads on clean, rusty, or lightly oily steel
→ Over 70,000 psi tensile strength – dependable, high-quality results every time
→ Smooth feeding & low spatter – copper-coated, layer-wound for easy starts & minimal cleanup
→ Handles mill scale, light rust & oil – extra manganese & silicon reduce defects
→ Versatile gas & transfer modes – 100% CO2 or Argon/CO2 mixes, short-circuit & spray
→ All-position capability – flat, horizontal, vertical, overhead with reliable performance

Best For

→ Construction & structural fabrication
→ Farm equipment & agricultural repairs
→ General shop work & steel castings
→ Automotive repairs & truck bodies
→ Tanks, pipes & shaft build-up

Smooth. Strong. Versatile.
Choose Metal Marlin ER70S-6 for reliable MIG welds on real-world jobs.

 

$89.99 USD
$89.99 USD
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Smooth arc guaranteed Power in every weld Consistent Arc. Reliable Performance. Dependable every time Built with grit

Trusted by Professionals

Real feedback from professionals who weld every day

5,000+ Welders Trust Us
Top Rated Electrodes

Arc is extremely stable, even on dirty metal. These rods outperform many premium brands.

Rajesh K.
Fabricator, Pune
Verified

Fast-freezing and reliable. Perfect for vertical welds on site.

Mike T.
Pipeline Welder, Houston
Verified

Vacuum-sealed packaging really makes a difference. Consistent quality every time.

Carlos M.
Structural Welder, Chicago
Verified

Best electrodes I've used for overhead work. Minimal spatter and excellent penetration.

David L.
Certified Welder, Denver
Verified

Professional grade quality at a fair price. My go-to for all heavy fabrication projects.

James R.
Shop Owner, Phoenix
Verified

Smooth arc start and easy slag removal. These have become my standard for all projects.

Sarah P.
Industrial Welder, Detroit
Verified

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Technical Specifications

Designed to meet industry standards for consistent performance and reliability.

Technical Details

Manufacturer ‎METAL MARLIN
Item model number ‎ER70S-6
Power Source ‎No Power Source Required
Included Components ‎Welding Wire
Batteries Required? No

Additional Information

Title Info
ASIN B0GKGHTXD3
Date First Available January 29, 2026

Suitable for multiple applications and operating conditions. Designed for consistent results across standard use cases.

Supplying Your Scale

Need bulk PVC hoses or welding materials? We handle large orders for industrial projects and fabrication without compromising quality.

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Frequently Asked Questions

Find answers to common questions about our products and services

ER70S 6 is used for MIG and TIG welding of mild steel in structural fabrication, automotive work, machinery, and general industrial applications.

It works with 100 percent CO2 or Argon CO2 mixed gas. Mixed gas typically delivers smoother arc performance and reduced spatter.

Yes. Its higher manganese and silicon content allows better deoxidation, making it suitable for steel with light rust, mill scale, or surface contaminants.

No. ER70S 6 is designed for smooth arc stability with low spatter, reducing post-weld cleanup.

Yes. It is widely used by professionals in fabrication shops, construction, and industrial welding environments.

Yes, we ship across the United States and can accommodate both small and large orders with timely delivery.