MIG Copper Wire ER70S-6 Mild Steel, AWS A5.18 Classification
Versatile ER70S-6 MIG wire with enhanced deoxidizers for reliable welds on mild steel, rusty surfaces, and sheet metal applications.
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MIG Copper Wire ER70S-6 Mild Steel
Brief Overview
This is a workhorse MIG welding wire designed for the real world—where surfaces aren't always pristine and efficiency matters. The ER70S-6 formulation delivers deoxidizers that improve wetting and reduce the porosity risk that comes with rusty or dirty steel. The copper coating provides consistent electrical conductivity and easier wire feeding. Whether you're stocking for general fabrication shops or high-volume repair operations, this wire performs across a broad spectrum of mild and low-alloy applications. Pair it with CO2-based shielding gas options or TIG rod alternatives for precision work to round out your welding consumables portfolio.
Key Features
- Enhanced Deoxidizer Content: Counteracts contamination on unclean surfaces; reduces the need for pre-cleaning on rusty or oxidized steel
- Copper-Coated Core: Bright metallic coating ensures smooth wire feed and reliable electrical contact
- Flat Bead Profile: Produces a flatter, more aesthetically finished weld bead with minimal spatter
- Single-Pass Capability: Designed for efficient, single-pass welding on mild and low-alloy steels
- Multi-Gas Compatibility: Works with standard MIG gas mixtures (75% Argon + 25% CO2, 98% Argon + 2% CO2, or 100% CO2)
- AWS A5.18 Classification: Meets international welding standards for repeatability and quality assurance
Applications
- Structural Repairs: Ideal for frame repairs, truck beds, and agricultural equipment
- Mild Steel Fabrication: General-purpose welding on uncoated or lightly oxidized steel
- Tube and Pipe Welding: Performs well on small-diameter tubing and pipe joints
- Sheet Metal Work: Excellent for automotive panels, enclosures, and thin-gauge applications
- Field Welding: The deoxidizer package makes this suitable for jobsite work where surface preparation is limited
Business Advantages for Resellers
- High Demand Core Product: ER70S-6 is the industry standard for general fabrication; stock turns quickly
- Margin-Friendly Consumable: Continuous inventory replacement ensures steady revenue
- Broad Customer Base: Appeals to welding shops, fabricators, repair facilities, and maintenance departments
- Easy Cross-Selling: Bundle with shielding gas, contact tips, or TIG rod options for stainless applications
- No Technical Barrier: Wide compatibility with existing MIG equipment reduces customer objections
Technical Specifications
| Specification | Value |
|---|---|
| Wire Classification | AWS A5.18 ER70S-6; DIN 8559 SG2; EN 440 G3Si1 |
| Shielding Gas Options | 75% Ar + 25% CO₂ / 98% Ar + 2% CO₂ / 100% CO₂ |
| Carbon (C) | 0.06–0.015% |
| Manganese (Mn) | 1.40–1.85% |
| Silicon (Si) | 0.80–1.15% |
| Phosphorus (P) | Max. 0.025% |
| Sulfur (S) | Max. 0.035% |
| Nickel (Ni) | Max. 0.15% |
| Chromium (Cr) | Max. 0.15% |
| Molybdenum (Mo) | Max. 0.15% |
| Vanadium (V) | Max. 0.03% |
| Copper (Cu) | Max. 0.50% |
| Iron (Fe) | Balanced |
| Other Elements | Max. 0.50% |
| Wire Form | Copper-coated; neatly wound on plastic reel |
Value Proposition
Stock this wire as your go-to MIG solution for shops that need reliable, no-fuss welding performance on mild steel. The deoxidizer package pays for itself in reduced rework on contaminated surfaces, and the copper coating ensures consistent feeder performance across different MIG equipment. Bulk orders benefit from competitive pricing on a product category with predictable, recurring demand.