Answer
Oct 01, 2025 - 04:21 AM
The chemical composition, particularly deoxidizer content (such as silicon and manganese), affects the mig wire's ability to produce clean welds and handle surface contaminants like rust or mill scale. Higher deoxidizer levels improve weld pool wetting and reduce porosity. For example, Harris ER70S-6 and Lincoln SuperArc L-56 both feature high manganese and silicon for better performance on less-than-clean steel. With various formulations available, you can choose the right balance for your job, enhancing weld quality even on challenging surfaces.
