Tungsten Electrode Sizing Calculator

Select proper tungsten electrode diameter and type for GTAW (TIG) welding based on material, thickness, and current

Input Parameters

Results

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Recommended Tungsten Dia
in
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Recommended Tungsten Type
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Recommended Tip Angle
deg
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Recommended Cup Size
#
Note: Thoriated tungsten (EWTh-2) offers best arc starts and longevity but is mildly radioactive. Ceriated (EWCe-2) and Lanthanated (EWLa-2) are non-radioactive alternatives with similar performance.

Reference

DCEN Tungsten Current Ranges: 1/16" = 10-80A | 3/32" = 60-160A | 1/8" = 100-250A 5/32" = 150-300A | 3/16" = 200-400A | 1/4" = 300-500A AC capacity = ~65% of DCEN | DCEP = ~40% of DCEN Tip angle: 15-30 deg for low amps, 45-75 deg for high amps Types: EWTh-2 (steel), EWCe-2 (all-purpose), EWP (aluminum AC)