TIG Welding Rods AWS Classification ER309 ER309L Material Stainless Steel Process TIG Welding (GTAW) Overall Diameter 0.0938 in Overall Length 36 in Yield Strength (Minimum Required) 58 ksi Series Lincoln ER309/309L Weight 10 lb For Material Type Stainless Steel to Stainless Steel For Material Grade 309S Welding Current Designation DCEN For Welding Position Flat Horizontal Overhead Vertical-Down Vertical-Up Tensile Strength (Minimum Required) 85 ksi