Oct 28, 2014 · Hi, buddy, You may find this helpful: SFA-5.20 Part C Section II, ASME B&PVC Code 2013 (AWS A5.20(M)2005), Annex A, A7.1: Electrodes in the EXXT-1C group are classified with CO2 shielding gas (AWS A5.32/A5.32M, Class SG-C). However, other gas mixtures such as argon-CO2 (AWS A5.32/A5.32M, Class SG-AC-25 or SG-AC-20) may be used to improve usability, …
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