Red Seal Welding Practice Exam

E7018 - A1 is a low alloy electrode. This electrode is commonly used for welding low alloy steels, which typically have less than 5% alloy content. Options A and B are incorrect because they refer to high and medium alloy electrodes, respectively. These types of electrodes are used for welding steels with higher alloy content. Option D is incorrect because E7018 - A1 is not a non-alloy electrode. It contains alloy material to provide better strength and toughness to the weld.