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Tungsten Electrode 7” Layzr Non-Radioactive

Best for automated or robotic applications in alternating current (a/c) or direct current (d/c) due to low voltage tolerance (changes in tip to work piece distance) using inverter or transformer based constant current power sources. Good for low-alloyed steels, Non corroding steels, aluminum alloys, magnesium alloys, titanium alloys, nickel alloys, copper alloys. Runs cooler than 2% Thoriated with longer life, low to medium amperage range. Best for low amperage starts.

• AWS A5.12 EWG
• ISO 6848

3/32” X 7” 2% Lanthanated tungsten electrodes (AWS classification EWLa-2) contain a minimum of 97.80 percent tungsten and 1.30 percent to 1.70 percent lanthanum, or Lanthana, and are known as 1.5 percent Lanthanated. These electrodes have excellent arc starting, a low Burn off rate, good arc stability, and excellent re ignition characteristics—many of the same advantages as Ceriated electrodes. Lanthanated electrodes also share the conductivity characteristics of 2 percent Thoriated tungsten. In some cases, 1.5 percent Lanthanated can replace 2 percent Thoriated without having to make significant welding program changes.

Lanthanated tungsten electrodes are ideal if you want to optimize your welding capabilities. They work well on AC or DC electrode negative with a pointed end, or they can be balled for use with AC sine wave power sources. Lanthanated tungsten maintains a sharpened point well, which is an advantage for welding steel and stainless steel on DC or AC from square wave power sources.

Unlike Thoriated tungsten, these electrodes are suitable for AC welding and, like Ceriated electrodes, allow the arc to be started and maintained at lower voltages. Compared with pure tungsten, the addition of 1.5 percent Lanthana increases the maximum current-carrying capacity by approximately 50 percent for a given electrode size.