Gas tungsten arc welding (GTAW, also known as TIG welding) also requires a shielding gas such as an argon/helium mixture or an argon/hydrogen mixture. TIG welding is used on thin metals because it ...

Base Metal and Welding Alloy Selection Factors The base metal refers to the composition ... Gas tungsten arc welding (GTAW), also known as tungsten inert gas (TIG) rod welding, joins metals by melting ...