7018 Electrodes

Mild and Low-alloy Steel, Low Hydrogen

• Used when strength is paramount – good mechanical properties especially on medium and thick sections
• Electrodes have a basic flux covering that has a fill-freeze characteristic
• Slag remains fluid although weld metal freezes relatively quickly – useful when welding out of position
• Quiet arc, low spatter and smooth weld bead appearance
• Classed as low-hydrogen when stored and handled in correct conditions
• Low-hydrogen electrodes deposit weldments that are resistant to cracking and of X-ray quality
• AC or DC and can withstand higher currents, giving greater deposition times

7024 Electrodes

Mild and Low-alloy Steel, High-recovery

• A popular choice in many industries such as vessel manufacture and bridge construction
• Low spatter and good slag removal
• Also known as iron powder or fast-fill because of the addition of iron to the thick, heavy rutile flux-coating
• The addition of iron powder gives increased efficiency in excess of 160% (faster deposition rates) and promotes good arc-striking
• Used in flat and horizontal positions only
• Drag technique in conjunction with high amperages gives excellent deposition rates

6013 Electrodes

Mild Steel, General-purpose

• Popular, easy to use, versatile electrode for mild steel
• Suitable for general fabrication, repairs and for hobby enthusiasts
• Good start/restart characteristics – suitable for tack welding
• Stable arc, minimal spatter
• Slag easily detached, giving attractive visual finish
• Rutile flux-coated gives moderate mechanical properties
• Easy to use in all positions including vertical-down
• AC or DC polarity. Also suitable for open circuit voltage transformers. Ideal for DIY use

Cast-iron Electrodes

• The most popular types are composed of either pure nickel or nickel/iron mix
• A graphite-based coating allows low-current operation and provides correct attributes for welding cast iron
• Pure nickel is best suited to welding grey, whiteheart and blackheart cast iron, or where the grade is unknown
• Nickel iron types are best suited to SG irons or where higher strength is needed
• Electrodes are designed to weld cold
• Electrodes should be run on low currents, in short runs, with no preheat, and allowed to cool between passes
• Cracks in electrodes should be completely ground out and the ends stopped off by drilling prior to welding