What is the Difference Between MIG and TIG Welding?

The main differences between MIG and TIG welding are the processes used to create the weld and the materials used. Here is a comparison of the two methods:

MIG (Metal Inert Gas) Welding:

• Uses a continuous solid wire electrode that is fed into the weld pool from a welding gun.
• Employs a semi-automatic or automatic arc.
• Suitable for mild steel and aluminum.
• Faster and more efficient, with less preparation and clean-up time.
• Less expensive and more readily available parts.
• Requires less skill and is more suitable for entry-level jobs.

TIG (Tungsten Inert Gas) Welding:

• Uses a non-consumable electrode and a hand-held filler rod to form the weld.
• Focuses on detail and is a slower process.
• Suitable for various materials, including exotic metals like stainless steel.
• Requires more skill and is typically used for higher-paying jobs.
• Demands more preparation, clean-up time, and the use of tungsten electrodes and filler rods.

In summary, MIG welding is generally faster, more efficient, and easier to learn, making it suitable for mild steel and entry-level jobs. TIG welding, on the other hand, is a more specialized technique that requires greater skill and is typically used for more complex projects and higher-paying jobs.

Comparative Table: MIG vs TIG Welding

Here is a table comparing the differences between MIG and TIG welding:

MIG welding uses a continuous solid wire electrode, while TIG welding uses a non-consumable tungsten electrode with a separate filler metal. MIG welding typically uses a DC power source, whereas TIG welding can use either AC or DC power sources. MIG welding is generally more suitable for mild steel, while TIG welding is better for exotic metals such as stainless steel. MIG welding has a higher heat input compared to TIG welding, and MIG welds are stronger than TIG welds. However, TIG welding is more complex and requires more skill and experience compared to MIG welding.