Executive 70S-2 is a copper free wire is the optimal choice when welding through rust, dirt, and mill scale. While primarily used for single pass welding on deoxidized and partially deoxidized steels Executive 70S-2 is suitable for some multi-pass applications as well. This filler metal is also well suited for use in single side, melt through welding without a protective root shielding gas on the backside of the joint. Executive 70S-2 TIG wire has a copper coating and is used to produce high quality, high toughness welds with the GTAW process.