Premium High-Performance ER70S-6 Wire Made with a Dry-Drawing, Copper-Free Process
UltraArc S6 is a high-performance uncoppered ER70S-6 MIG welding wire designed for cleaner welding, smoother feeding, and dramatically lower spatter than traditional copper-coated wires. Manufactured using a dry-drawing process, UltraArc S6 eliminates the dust, debris, and contamination common in copper-coated alternatives.
The result is a wire that feeds flawlessly, welds cleaner, and protects your consumables and drive rolls — while delivering top-tier weld quality in both manual and robotic applications.
The number one thing that manual welders notice when first trying copper-free wire, is the major reduction in spatter, and the smoother more stable arc. We also hear that it is easier to achieve spray transfer, and less likely to short circuit than coppered wire.
In robotic applications, the feedback we hear on day one is again that the spatter is greatly reduced, the welds are more attractive, and that the weld cell makes a bit less smoke. After an extended period of time, customer feedback is that their cell now requires fewer tip changes, and has less feeding issues.
The Weldready team has toured the factory where this wire is made in Italy, and to say the facility is clean and impressive is putting it lightly. Premium, European copper-free MIG wires cost a lot more than this from other brands!
Features:
- Reduced fume production
- Rapid start of the arc
- Arc stability achieved faster
- Constant stick out prevents wire from sticking to nozzle
- Consistent wire feeding, constant sliding
- Perfectly wound spools and drums increase feeding efficiency
- Stable and uninterrupted welding arc
- Significant reduction in splatter
- Very limited presence of silicates
- Excellent aesthetic quality of the weld bead
- Surface of wire is treated to prevent oxidation from atmospheric exposure
- Available in 20kg spools, and 250kg drums
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Classification & Approval: AWS A5.18 ER70s-6, CWB B-G 49A 3 C1 S6
Superior Welding Performance
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Very stable arc with excellent wetting action
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Lower spatter than copper-coated wire
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Reduces post-weld cleanup
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Smooth bead appearance and strong mechanical properties
Uncoppered “Dry-Drawn” Manufacturing
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No copper plating → no flaking, dust, or contamination
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Cleaner liner and torch system
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Increased tip life and lower maintenance
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Ideal for robotic welding cells and high-volume production
Exceptional Feeding Characteristics
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Ultra-consistent wire diameter and surface finish
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Reduced friction in liners and gun cables
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More reliable feeding in long cables and push-pull systems
Cleaner Welding Environment
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No copper fumes or copper deposits
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Reduced operator exposure
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Cleaner shop environment and better filter life in fume extraction systems
Applications
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Light, medium, and heavy fabrication
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Manufacturing & production lines
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General steel welding
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Robotic welding cells
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Structural steel shops
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Automotive and trailer manufacturing
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Agricultural equipment repair and fabrication
Technical Advantages
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High silicon & manganese levels improve puddle fluidity
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Great gap-bridging capability
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Strong mechanical performance in all positions
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Suitable for CO₂ or mixed shielding gases
Wire Classification
Why Choose UltraArc S6 Over Copper-Coated Wire?
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Longer contact tip life
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Cleaner liners → fewer feeding issues
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No copper dust or flaking
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Better arc quality & lower spatter
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Improved consistency in automated cell environments
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Higher welding productivity & fewer stoppages
Average Chemical Analysis:
| Element |
C % |
Si % |
Mn % |
P % |
S % |
Cu % |
| Value |
0.070 |
0.85 |
1.45 |
< 0.020 |
< 0.020 |
< 0.10 |
Typical Mechanical Properties:
| Property |
Value |
| Rm (MPa) |
550 |
| Rs (MPa) |
450 |
| A % |
> 24 |
| KV (J) |
> 80 (–40°C) |
