CK Worldwide CK Green LAaYZR (Chartreuse) Tungsten Electrodes Pack of 10

LaYZr (CHARTREUSE) EWG Principal Oxides: 1.5% Lanthanum, 0.08% Zirconium, 0.08% Yttrium Oxides This non-radioactive tungsten is best for automated or robotic uses in AC or DC, it can tolerate a low voltage and uses inverter or transformer based constant current power sources.  These tungsten's are good for low alloyed steels, non-corroding steels and alloys of aluminium, magnesium, titanium, nickel and copper. The geometry of the tips are very stable and they run cooler than the 2% Thoriated and have a longer lifespan. Use these in the low to medium amp range.  This pack of ten is the best way always to have tungsten's on hand. 

CK Worldwide CK 1.5% Lantanated Gold Tungsten Pack Of 10

CK Worldwide 1.5% LANTHANATED (GOLD) EWLa-1.5/WU5 Principal Oxide: 1.3-1.7% Lanthanum Oxide Lanthanated: Best for use in Direct Current (D/C) as an alternative to 2% Thoriated using inverter or transformer based constant current power sources. Best for non corroding steels, titanium alloys, nickel alloys, copper alloys. Best D/C arc starts and stability, low erosion rate, wide amperage range, no splitting.    In sizes: 0.5mmx175mm to 4.0x 175mm Comes in pack of 10.