COBRA ER70S-6 Mild Steel TIG Filler Rod – 1.6mm, 2.4mm & 3.2mm – 5kg

ER70S-6 TIG Filler Rod is a premium-quality, copper-coated mild steel TIG filler wire designed for smooth, consistent welding of carbon and mild steels.

Available in 1.6mm, 2.4mm and 3.2mm diameters, these 1000mm TIG rods are supplied in a 5kg pack, giving professional welders and fabricators a choice of filler diameter to suit different material thicknesses, joint configurations and welding amperages.

ER70S-6 contains higher levels of manganese and silicon than ER70S-2, providing strong deoxidising characteristics, excellent puddle fluidity and good tolerance of light mill scale and surface contaminants. It produces a smooth, clean weld bead and is an excellent general-purpose choice for everyday mild steel TIG fabrication.

From workshop fabrication and structural work to automotive repairs and steel pipe or tube, ER70S-6 is a versatile mild steel TIG filler rod for professional and general fabrication applications.

Available Diameters

Choose your required diameter from the product options:

• 1.6mm x 1000mm – 5kg Pack
• 2.4mm x 1000mm – 5kg Pack
• 3.2mm x 1000mm – 5kg Pack

Why Choose ER70S-6 TIG Filler Rod?

ER70S-6 is one of the most versatile filler metals for general-purpose TIG welding of mild and carbon steel.

Its higher manganese and silicon deoxidiser content helps promote excellent weld-puddle fluidity and provides greater tolerance of light rust, mill scale and other minor surface contaminants than lower-deoxidiser filler metals.

ER70S-6 is particularly well suited to fabrication where smooth bead appearance, good wetting action and consistent weld quality are required.

For best welding results, base material should still be properly cleaned and prepared before welding.

Key Features

• ER70S-6 grade TIG filler rod
• Available in 1.6mm, 2.4mm & 3.2mm diameters
• 1000mm rod length
• 5kg pack
• Premium industrial-quality TIG filler metal
• Copper-coated steel filler rod
• High manganese and silicon deoxidiser content
• Excellent puddle fluidity and wetting characteristics
• Smooth, consistent bead appearance
• Good tolerance of light mill scale and surface contamination
• Excellent general-purpose choice for mild and carbon steel
• Suitable for professional fabrication, repairs and maintenance
• Batch identified for traceability
• Certificate of Conformance available
• Securely packaged to protect the filler rods during storage and transport

Suitable Applications

Ideal for TIG welding:

• Mild steel
• Carbon steel
• Structural steel fabrication
• Steel pipe and tube
• Automotive fabrication and repairs
• Sheet metal fabrication
• General workshop fabrication
• Maintenance and repair work
• Machinery and equipment fabrication

Choosing Your Filler Rod Diameter

Select your filler rod diameter based on material thickness, joint design, welding amperage and required deposition rate.

• 1.6mm – Ideal for thinner material, precision work and lower-amperage TIG welding
• 2.4mm – Versatile general-purpose size for a wide range of mild steel fabrication
• 3.2mm – Better suited to heavier material, larger weld joints and applications requiring greater filler deposition

Specifications