TUN G STE N
TUNGSTEN ELECTRODES Oxides used are primarily zirconium, thorium, lanthanum or cerium. Additions are usually 1% – 4%. These oxides greatly improve arc initiation, especially when direct current (DC) welding is employed. Thorium oxide (thoria) has been used for many years, having been found effective in terms of long life and thermal efficiency. Zirconium oxide (zirconia) has been commonly used for alternating (AC) TIG welding, normally for welding aluminum.
ISO 6848 COLOR CHART
TYPE
SIZE .020 x 7" (0.5mm x 175mm)
AWS A5.12 EWTh-2 ISO 6848 WT20
2% Thoriated tungsten: Best stability at medium currents, good arc starts, medium tendency to spit, medium erosion rate
.040 x 7" (1.0mm x 175mm) 1/16 x 7" (1.6mm x 175mm) 3/32 x 7" (2.4mm x 175mm) 1/8 x 7" (3.2mm x 175mm) 5/32 x 7" (4.0mm x 175mm) .020 x 7" (0.5mm x 175mm)
CK WORLDWIDE
• Facilitate arc starting • Increase arc stability • Improve current carrying
TUNGSTEN electrodes
Red Red
White White
AWS A5.12 NONE ISO 6848 WZ8
.8% Zirconiated tungsten: Balls well, handles higher current with less spitting, better arc starts and arc stability than pure tungsten
.040 x 7" (1.0mm x 175mm) 1/16 x 7" (1.6mm x 175mm) 3/32 x 7" (2.4mm x 175mm) 1/8 x 7" (3.2mm x 175mm) 5/32 x 7" (4.0mm x 175mm) .020 x 7" (0.5mm x 175mm)
1.5% Lanthanated tungsten: Gold Gold Lowest erosion rate, wide AWS A5.12 EWLa-1.5 current range, no spitting, ISO 6848 WL15 best DC arc starts and stability
.040 x 7" (1.0mm x 175mm) 1/16 x 7" (1.6mm x 175mm) 3/32 x 7" (2.4mm x 175mm) 1/8 x 7" (3.2mm x 175mm) 5/32 x 7" (4.0mm x 175mm) .020 x 7" (0.5mm x 175mm)
Gray Gray AWS A5.12 EWCe-2 ISO 6848 WC20
2% Ceriated tungsten: Low erosion rate, wide current range, AC or DC, no spitting, consistent arc starts, good stability
.040 x 7" (1.0mm x 175mm) 1/16 x 7" (1.6mm x 175mm) 3/32 x 7" (2.4mm x 175mm) 1/8 x 7" (3.2mm x 175mm) 5/32 x 7" (4.0mm x 175mm) .020 x 7" (0.5mm x 175mm)
Green Green AWS A5.12 EWP ISO 6848 WP
Pure tungsten: Balls easily, low cost, tends to spit at higher currents, used for non-critical welds only
.040 x 7" (1.0mm x 175mm) 1/16 x 7" (1.6mm x 175mm) 3/32 x 7" (2.4mm x 175mm) 1/8 x 7" (3.2mm x 175mm) 5/32 x 7" (4.0mm x 175mm)
PART # 10 piece
T0207GT2 T0407GT2 T1167GT2 T3327GT2 T187GT2 T5327GT2 T0207GZ T0407GZ T1167GZ T3327GZ T187GZ T5327GZ T0207GL T0407GL T1167GL T3327GL T187GL T5327GL T0207GC2 T0407GC2 T1167GC2 T3327GC2 T187GC2 T5327GC2 T0207G T0407G T1167G T3327G T187G T5327G
capacity of the electrode
3 piece
• Reduce the risk of weld contamination
• Increase electrode life
T1167GT2-3 T3327GT2-3 T187GT2-3
T1167GZ-3 T3327GZ-3 T187GZ-3
T1167GL-3 T3327GL-3 T187GL-3
T1167GC2-3 T3327GC2-3 T187GC2-3
GROUND FINISH!
T1167G-3 T3327G-3 T187G-3
TUNGSTEN STICK-OUT GAUGE The choice of master craftsmen CONSISTENT STICK-OUT ADDS QUALITY TO EVERY WELD
• Consistent stick-out adds quality to every weld • Great for orbital welders, instructors, weld inspectors • Insures correct stick-out for gas nozzle being used • Eliminates tungsten contamination by keeping the tungsten in the gas stream • Correct stick-out insures undue stress on the ceramic gas nozzle
Threaded gauge rod Knurled lock nut
Gauge body
l Loosen l
knurled lock nut
Turn threaded gauge rod to adjust gauge depth. (markings are in 1/16th inch increments)
l Lock
gauge by turning knurled lock nut firmly against the gauge body
1/16th inch markings
TGI-24 - Small Gauge
TGI - Large Gauge
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TIG welding electrodes usually contain small quantities of metallic oxides, which can offer the following benefits:
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