31GH70 Tungsten Electrode, AWS Classification EWCe-2, Chemical Composition Ceriated, Color Gray, For Material Type Aluminum, Carbon Steel, Copper, Low-Alloy Steel, Magnesium, Nickel, Stainless Steel, Titanium, Overall Diameter 0.09375 in, Overall Length 7 in, Welding Current Designation AC/DC, Welding Processes TIG Welding (GTAW), Electrode Material Tungsten, Features Improved Arc Stability, Increased Ease of Starting, Reduced Rate of Vaporization or Burn-Off, Standards AWS A5.12, Weight 0.112 lb