The Zirconiated Tungsten Electrodes (AWS & ISO classification EWZr-1) contain a minimum of 99.1% tungsten and 0.15%-0.4% zirconium.
Can only be run on ACBall well and retain the shapeIncredibly stable arcAs a strong metal it doesn't split or spit and contaminate the weldHandles high amps well (perfect for aluminium)