What purpose on co2 gas for MAG welding?

In MAG (Metal Active Gas) welding, CO2 gas serves as a shielding gas to protect the weld pool from atmospheric contamination. It helps stabilize the arc and improves penetration and welding speed while also enhancing the overall quality of the weld. Additionally, CO2 is cost-effective compared to other shielding gases, making it a popular choice for various welding applications. However, it can produce more spatter and may require post-weld cleaning.