Tig Welding Tungsten

I could use some pointers for TIG welding 303 & 316 Stainless Steel?

I haven’t done TIG welding in quite some time and I have a very important performance test to take tomorrow. Do I use DC and straight polarity (ground side to have torch), and do I need 2% thiorated tungsten or pure tung.? My material will be 303 & 316 SS.

You will weld in accordance to the weld procedures that will be given to you for the specific materials mentioned.

WT20 TIG Welding Thoriated Tungsten Electrodes 10 Pcs $23.19

5 1.5% Lanthanated Tungsten Tig Weld Electrodes 1/8 x 7 $16.95

5 Pure Tungsten TIG Weld Welding Electrodes 1/8″ x 7″ $16.95

L-Tec Linde ESAB Weldcraft HW-9 WP-9 TIG torch body Heliarc tungsten welding $14.00

10 2% Thoriated Tungsten TIG Welding Electrode 0.040×7″ $4.99

Thoriated Tungsten Electrode 3.2 x 150mm TIG Welding $5.48

Tungsten chemical sharpener, 5 oz jar for TIG welding $10.00

5 2% Ceriated Tungsten TIG Weld Electrodes 1/16″ x 7″ $5.50

5 1.5% Lanthanated Tungsten TIG Weld Electrodes 3/32 7 $9.75

10 2% Ceriated Tungsten TIG Weld Electrodes 1/16″ x 7″ $9.90

10 2% Thoriated Tungsten Tig Weld Electrodes 1/16″ x 7″ $9.90

5 2% Thoriated Tungsten Tig Weld Electrodes 1/16″ x 7″ $5.50

10 Pcs WT20 TIG Welding Thoriated Tungsten Thorium Oxide Electrodes $30.08

9 & 20 Tig Welding Torch Parts Kit Tungsten Collets $39.95

TIG welding tungsten electrodes 1.6mm thoriated red tip $21.56

TIG welding tungsten electrodes 2.0mm zirconiated white $29.13

TIG welding tungsten electrodes 2.4mm zirconiated white $41.02

TIG welding tungsten electrodes 1.6mm zirconiated white $21.56

TIG welding tungsten electrodes 2.0mm thoriated red tip $29.13

TIG welding tungsten electrodes 2.4mm thoriated red tip $41.02

10 Pure Tungsten TIG Welding Electrodes, 0.040″x7″ $4.99

OKI Bering Pure Tungsten Tig Weld Electrodes Ground 3/32″ x 7″ Green~10 Pk $16.99

Lincoln Electric KP507 Parts Kit for LA-9 tig welding torch thoriated tungsten $30.00

5 2% Ceriated Tungsten TIG Weld Electrodes 3/32″ x 7″ $9.75

10 2% Thoriated Tungsten TIG Weld Electrodes 1/8″ x 7″ $30.90

Anchor Brand Tungsten Electrodes 3/32″ X 7″ TIG Welding 7 Boxes NOS Made in USA $69.99

5 Pure Tungsten TIG Weld Welding Electrodes 3/32″ x 7″ $9.75

10 Pure Tungsten TIG Welding Electrodes 3/32 x 7 Green $17.90

10 2% Thoriated Tungsten Tig Weld Electrodes .040″ x 7″ $6.00

10 2% Ceriated Tungsten TIG welding electrode, 1/16″x7″ $8.99

10 Pure Tungsten TIG Welding Electrodes 1/8 x 7 Green $30.90

5 2% Thoriated Tungsten TIG Weld Electrodes 3/32″ x 7″ $9.75

5 2% Thoriated Tungsten TIG Weld Electrodes 1/8″ x 7″ $16.95

TIG WELDING TUNGSTEN ELECTRODES 1.6 X175MM PACKETS OF 10 WZ8 USE ALUMINIUM $9.48

TIG WELDING TUNGSTEN ELECTRODES 1.6 X150MM PACKETS OF 10 WT20 USE SS/MS $9.48

TIG WELDING TUNGSTEN ELECTRODES 2.4 X175MM PACKETS OF 10 WZ8 USE ALUMINIUM $13.48

10 2% Ceriated Tungsten TIG welding electrode, 3/32″x7″ $18.99

10 PACK 3/32 2% THORIATED 7″ TUNGSTEN TIG WELDING TORCH ELECTRODES HOLOX $19.99

Yellow TIG Welding Gun for 1.6mm Dia Tungsten Electrode $10.49

5 2% Ceriated Tungsten TIG Weld Electrodes .040″ x 7″ $4.50

WT20 TIG Welding Thoriated Tungsten Electrodes 10 Pcs $24.11

10 Pcs WT20 TIG Welding Thoriated Tungsten Thorium Oxide Electrodes $30.07

10 Pure Tungsten TIG Weld Welding Electrodes 1/16″ x 7″ $9.90

Yellow TIG Welding Gun for 1.6mm Dia Tungsten Electrode $10.47

5 Pure Tungsten TIG Weld Welding Electrodes 1/16″ x 7″ $5.50

WT20 TIG Welding Thoriated Tungsten Electrodes 10 Pcs $24.11

10 1.5% Lanthanated Tungsten TIG weld electrode .040×7″ $4.99

10 2% Ceriated Tungsten TIG Welding Electrodes, 1/8″x7″ $28.99

10 2% Ceriated Tungsten TIG Welding Electrode, 0.040×7″ $4.99

Yellow TIG Welding Gun for 1.6mm Dia Tungsten Electrode $11.26