Harris E70S6E5 ER70S-6 MS Spool with Welding Wire, 0.030 lb. x 11 lb. Review Mutantra January 27, 2019 January 27, 2019 No Comments on Harris E70S6E5 ER70S-6 MS Spool with Welding Wire, 0.030 lb. x 11 lb. Review A general purpose welding wire for fabrication of mild steel. Contains more deoxidizers than ER70S-3.