TIG Welding Tungsten Size, Cup Number & Gas Flow Calculator
Calculate recommended tungsten electrode diameter, alumina gas lens cup number (#4–#12), argon shielding gas flow rate (CFH & L/min), and post-flow timer seconds for TIG (GTAW) welding.
Welding Current & Torch Configuration
Amps
Electrode & Cup Recommendation
ARGON GAS LENS
3/32" (2.4 mm)
#8 Alumina Cup (1/2" / 12.7 mm inner diameter)
Argon Shielding Gas Flow Settings
Flow Rate (Imperial CFH):
14 – 16 CFH
Flow Rate (Metric L/min):
6.6 – 7.5 L/min
Post-Flow Timer Setting:
12 Seconds
Tungsten Grinding & Preparation
Tungsten Tip Geometry:
Pointed tip with truncated flat (2.5x taper)
Electrode Stick-Out:
4.0 – 6.0 mm (Past cup rim)
Color Identification:
Blue Tip (2% Lanthanated)