ENBE 499. 2. Outline. BackgroundAdvantages and DisadvantagesSafetyPreparation for TIG WeldingTechniques for Basic Weld JointsTIG Shielding GasesWelding ParametersTungsten Electrode SelectionConclusion. ENBE 499. 3. Background. What is TIG?Tungsten Inert GasAlso referred to as GTAWGas Shielded Tungsten WeldingIn TIG welding, a tungsten electrode heats the metal you are welding and gas (most typically Argon) protects the weld from airborne contaminants.