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B&Q£35.99Visit shop B&Q - Mild Steel Mig Welding Wire Reel Er70S-6 1.0mm 15Kg Copper Coated Iso 14341 Certified
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This Autojack ER70S-6 MIG welding wire is designed for professional fabricators, automotive repair shops, and serious DIY users seeking reliable welds on mild and carbon steel. Its key benefit is consistent arc stability and smooth feeding, leading to strong, clean welds with minimal spatter. A potential caveat is its industrial 15kg spool size, which may be more than needed for very small, infrequent projects.
| Model Part Number | WW15KG1 |
|---|---|
| Brand | Autojack |
This ER70S-6 wire is specifically designed for welding mild steel and carbon steel. It performs well even on surfaces with light rust or mill scale.
A common and effective shielding gas mixture for this wire is 75% Argon / 25% CO2. 100% CO2 can also be used, but may result in a slightly coarser arc and more spatter.
The copper coating improves electrical conductivity for a more stable arc, reduces friction and wear on the contact tip, and provides some corrosion resistance.
While it can be used outdoors, take precautions to shield the weld area from wind, which can disrupt the shielding gas and lead to weld porosity. Use gas blends with higher CO2 content for better wind resistance if necessary.
ER70S-6 has higher levels of manganese and silicon, which help deoxidize the weld puddle and improve its ability to bridge gaps and handle slightly contaminated surfaces compared to ER70S-2.
Store the spool in a cool, dry place, preferably in its original packaging or a sealed plastic bag with a desiccant pack to prevent moisture absorption and maintain wire quality.
Check drive roll tension, ensure the wire path is clear of debris, and verify the contact tip is not clogged or worn.
Adjust voltage and wire speed settings, check shielding gas flow rate, and ensure the correct contact tip is being used.
Increase voltage and wire speed, ensure correct travel speed, and confirm the work surface is clean of rust or paint.
Verify correct polarity, check shielding gas connection and flow, and ensure the workpiece and ground clamp are clean and making good contact.
Setup: Ensure your MIG welder is set to the correct polarity for solid wire (usually DCEN - electrode negative). Install the 15kg spool onto your welder's spool holder, threading the wire through the drive rolls and contact tip. Adjust drive roll tension to prevent wire slippage but avoid crushing the wire. Set appropriate welding parameters (voltage, amperage, wire speed) based on the material thickness and your welder's recommendations.
Compatibility: This wire is designed for use with standard MIG (GMAW) welding machines. It is compatible with most common shielding gases for mild steel, such as 75% Argon / 25% CO2 or 100% CO2.
Care: Store the wire in a dry environment, ideally in its original packaging or a sealed bag with desiccant, to prevent moisture absorption and corrosion of the copper coating. Keep contact tips clean and replace them as needed to ensure optimal electrical conductivity and wire feeding.
