UltraMag® S6 has the highest level of manganese and silicon and can be used when welding on materials with a medium to high presence of dirt, rust or mill scale. In addition, UltraMag® S6 produces a more fluid weld pool and is an excellent choice when bead appearance is important. It offers the best weld appearance and toe wetting when compared to ER70S-3 and ER70S-4 classifications. Ultramag® S6 has high silicon and manganese deoxidizer levels. Superior feedability and excellent arc characteristics are trade-marks of Ultramag® S6. Shielding gases include argon/carbon dioxide blends, argon/oxygen blends, straight carbon dioxide, and three or four-part gas mixes.