What Gas Is Used for MIG Welding? Shielding Gases Explained
Gas Metal Arc Welding (GMAW), better known as MIG welding, relies on shielding gas to protect the weld from contamination. Without it, atmospheric gases like oxygen and nitrogen would cause porosity, weak joints, and excessive spatter. However, not all shielding gases are created equal—different gases influence arc characteristics, weld appearance, penetration, and even the cost…